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671 lines
28 KiB
671 lines
28 KiB
<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\db\mssql; |
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use yii\base\InvalidArgumentException; |
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use yii\base\NotSupportedException; |
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use yii\db\Constraint; |
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use yii\db\Expression; |
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use yii\db\TableSchema; |
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|
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/** |
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* QueryBuilder is the query builder for MS SQL Server databases (version 2008 and above). |
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* |
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* @author Timur Ruziev <resurtm@gmail.com> |
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* @since 2.0 |
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*/ |
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class QueryBuilder extends \yii\db\QueryBuilder |
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{ |
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/** |
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* @var array mapping from abstract column types (keys) to physical column types (values). |
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*/ |
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public $typeMap = [ |
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Schema::TYPE_PK => 'int IDENTITY PRIMARY KEY', |
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Schema::TYPE_UPK => 'int IDENTITY PRIMARY KEY', |
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Schema::TYPE_BIGPK => 'bigint IDENTITY PRIMARY KEY', |
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Schema::TYPE_UBIGPK => 'bigint IDENTITY PRIMARY KEY', |
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Schema::TYPE_CHAR => 'nchar(1)', |
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Schema::TYPE_STRING => 'nvarchar(255)', |
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Schema::TYPE_TEXT => 'nvarchar(max)', |
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Schema::TYPE_TINYINT => 'tinyint', |
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Schema::TYPE_SMALLINT => 'smallint', |
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Schema::TYPE_INTEGER => 'int', |
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Schema::TYPE_BIGINT => 'bigint', |
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Schema::TYPE_FLOAT => 'float', |
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Schema::TYPE_DOUBLE => 'float', |
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Schema::TYPE_DECIMAL => 'decimal(18,0)', |
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Schema::TYPE_DATETIME => 'datetime', |
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Schema::TYPE_TIMESTAMP => 'datetime', |
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Schema::TYPE_TIME => 'time', |
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Schema::TYPE_DATE => 'date', |
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Schema::TYPE_BINARY => 'varbinary(max)', |
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Schema::TYPE_BOOLEAN => 'bit', |
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Schema::TYPE_MONEY => 'decimal(19,4)', |
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]; |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function defaultExpressionBuilders() |
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{ |
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return array_merge(parent::defaultExpressionBuilders(), [ |
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'yii\db\conditions\InCondition' => 'yii\db\mssql\conditions\InConditionBuilder', |
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'yii\db\conditions\LikeCondition' => 'yii\db\mssql\conditions\LikeConditionBuilder', |
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]); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function buildOrderByAndLimit($sql, $orderBy, $limit, $offset) |
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{ |
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if (!$this->hasOffset($offset) && !$this->hasLimit($limit)) { |
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$orderBy = $this->buildOrderBy($orderBy); |
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return $orderBy === '' ? $sql : $sql . $this->separator . $orderBy; |
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} |
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if (version_compare($this->db->getSchema()->getServerVersion(), '11', '<')) { |
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return $this->oldBuildOrderByAndLimit($sql, $orderBy, $limit, $offset); |
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} |
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return $this->newBuildOrderByAndLimit($sql, $orderBy, $limit, $offset); |
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} |
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/** |
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* Builds the ORDER BY/LIMIT/OFFSET clauses for SQL SERVER 2012 or newer. |
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* @param string $sql the existing SQL (without ORDER BY/LIMIT/OFFSET) |
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* @param array $orderBy the order by columns. See [[\yii\db\Query::orderBy]] for more details on how to specify this parameter. |
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* @param int $limit the limit number. See [[\yii\db\Query::limit]] for more details. |
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* @param int $offset the offset number. See [[\yii\db\Query::offset]] for more details. |
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* @return string the SQL completed with ORDER BY/LIMIT/OFFSET (if any) |
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*/ |
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protected function newBuildOrderByAndLimit($sql, $orderBy, $limit, $offset) |
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{ |
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$orderBy = $this->buildOrderBy($orderBy); |
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if ($orderBy === '') { |
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// ORDER BY clause is required when FETCH and OFFSET are in the SQL |
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$orderBy = 'ORDER BY (SELECT NULL)'; |
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} |
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$sql .= $this->separator . $orderBy; |
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// http://technet.microsoft.com/en-us/library/gg699618.aspx |
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$offset = $this->hasOffset($offset) ? $offset : '0'; |
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$sql .= $this->separator . "OFFSET $offset ROWS"; |
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if ($this->hasLimit($limit)) { |
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$sql .= $this->separator . "FETCH NEXT $limit ROWS ONLY"; |
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} |
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return $sql; |
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} |
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/** |
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* Builds the ORDER BY/LIMIT/OFFSET clauses for SQL SERVER 2005 to 2008. |
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* @param string $sql the existing SQL (without ORDER BY/LIMIT/OFFSET) |
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* @param array $orderBy the order by columns. See [[\yii\db\Query::orderBy]] for more details on how to specify this parameter. |
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* @param int|Expression $limit the limit number. See [[\yii\db\Query::limit]] for more details. |
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* @param int $offset the offset number. See [[\yii\db\Query::offset]] for more details. |
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* @return string the SQL completed with ORDER BY/LIMIT/OFFSET (if any) |
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*/ |
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protected function oldBuildOrderByAndLimit($sql, $orderBy, $limit, $offset) |
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{ |
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$orderBy = $this->buildOrderBy($orderBy); |
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if ($orderBy === '') { |
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// ROW_NUMBER() requires an ORDER BY clause |
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$orderBy = 'ORDER BY (SELECT NULL)'; |
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} |
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$sql = preg_replace('/^([\s(])*SELECT(\s+DISTINCT)?(?!\s*TOP\s*\()/i', "\\1SELECT\\2 rowNum = ROW_NUMBER() over ($orderBy),", $sql); |
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if ($this->hasLimit($limit)) { |
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if ($limit instanceof Expression) { |
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$limit = '('. (string)$limit . ')'; |
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} |
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$sql = "SELECT TOP $limit * FROM ($sql) sub"; |
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} else { |
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$sql = "SELECT * FROM ($sql) sub"; |
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} |
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if ($this->hasOffset($offset)) { |
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$sql .= $this->separator . "WHERE rowNum > $offset"; |
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} |
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return $sql; |
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} |
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/** |
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* Builds a SQL statement for renaming a DB table. |
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* @param string $oldName the table to be renamed. The name will be properly quoted by the method. |
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* @param string $newName the new table name. The name will be properly quoted by the method. |
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* @return string the SQL statement for renaming a DB table. |
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*/ |
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public function renameTable($oldName, $newName) |
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{ |
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return 'sp_rename ' . $this->db->quoteTableName($oldName) . ', ' . $this->db->quoteTableName($newName); |
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} |
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/** |
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* Builds a SQL statement for renaming a column. |
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* @param string $table the table whose column is to be renamed. The name will be properly quoted by the method. |
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* @param string $oldName the old name of the column. The name will be properly quoted by the method. |
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* @param string $newName the new name of the column. The name will be properly quoted by the method. |
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* @return string the SQL statement for renaming a DB column. |
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*/ |
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public function renameColumn($table, $oldName, $newName) |
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{ |
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$table = $this->db->quoteTableName($table); |
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$oldName = $this->db->quoteColumnName($oldName); |
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$newName = $this->db->quoteColumnName($newName); |
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return "sp_rename '{$table}.{$oldName}', {$newName}, 'COLUMN'"; |
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} |
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/** |
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* Builds a SQL statement for changing the definition of a column. |
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* @param string $table the table whose column is to be changed. The table name will be properly quoted by the method. |
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* @param string $column the name of the column to be changed. The name will be properly quoted by the method. |
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* @param string $type the new column type. The [[getColumnType]] method will be invoked to convert abstract column type (if any) |
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* into the physical one. Anything that is not recognized as abstract type will be kept in the generated SQL. |
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* For example, 'string' will be turned into 'varchar(255)', while 'string not null' will become 'varchar(255) not null'. |
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* @return string the SQL statement for changing the definition of a column. |
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* @throws NotSupportedException if this is not supported by the underlying DBMS. |
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*/ |
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public function alterColumn($table, $column, $type) |
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{ |
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$sqlAfter = [$this->dropConstraintsForColumn($table, $column, 'D')]; |
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$columnName = $this->db->quoteColumnName($column); |
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$tableName = $this->db->quoteTableName($table); |
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$constraintBase = preg_replace('/[^a-z0-9_]/i', '', $table . '_' . $column); |
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if ($type instanceof \yii\db\mssql\ColumnSchemaBuilder) { |
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$type->setAlterColumnFormat(); |
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$defaultValue = $type->getDefaultValue(); |
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if ($defaultValue !== null) { |
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$sqlAfter[] = $this->addDefaultValue( |
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"DF_{$constraintBase}", |
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$table, |
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$column, |
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$defaultValue instanceof Expression ? $defaultValue : new Expression($defaultValue) |
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); |
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} |
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$checkValue = $type->getCheckValue(); |
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if ($checkValue !== null) { |
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$sqlAfter[] = "ALTER TABLE {$tableName} ADD CONSTRAINT " . |
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$this->db->quoteColumnName("CK_{$constraintBase}") . |
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" CHECK (" . ($defaultValue instanceof Expression ? $checkValue : new Expression($checkValue)) . ")"; |
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} |
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if ($type->isUnique()) { |
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$sqlAfter[] = "ALTER TABLE {$tableName} ADD CONSTRAINT " . $this->db->quoteColumnName("UQ_{$constraintBase}") . " UNIQUE ({$columnName})"; |
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} |
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} |
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return 'ALTER TABLE ' . $tableName . ' ALTER COLUMN ' |
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. $columnName . ' ' |
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. $this->getColumnType($type) . "\n" |
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. implode("\n", $sqlAfter); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function addDefaultValue($name, $table, $column, $value) |
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{ |
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return 'ALTER TABLE ' . $this->db->quoteTableName($table) . ' ADD CONSTRAINT ' |
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. $this->db->quoteColumnName($name) . ' DEFAULT ' . $this->db->quoteValue($value) . ' FOR ' |
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. $this->db->quoteColumnName($column); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function dropDefaultValue($name, $table) |
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{ |
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return 'ALTER TABLE ' . $this->db->quoteTableName($table) |
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. ' DROP CONSTRAINT ' . $this->db->quoteColumnName($name); |
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} |
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/** |
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* Creates a SQL statement for resetting the sequence value of a table's primary key. |
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* The sequence will be reset such that the primary key of the next new row inserted |
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* will have the specified value or 1. |
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* @param string $tableName the name of the table whose primary key sequence will be reset |
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* @param mixed $value the value for the primary key of the next new row inserted. If this is not set, |
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* the next new row's primary key will have a value 1. |
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* @return string the SQL statement for resetting sequence |
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* @throws InvalidArgumentException if the table does not exist or there is no sequence associated with the table. |
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*/ |
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public function resetSequence($tableName, $value = null) |
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{ |
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$table = $this->db->getTableSchema($tableName); |
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if ($table !== null && $table->sequenceName !== null) { |
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$tableName = $this->db->quoteTableName($tableName); |
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if ($value === null) { |
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$key = $this->db->quoteColumnName(reset($table->primaryKey)); |
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$value = "(SELECT COALESCE(MAX({$key}),0) FROM {$tableName})+1"; |
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} else { |
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$value = (int) $value; |
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} |
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return "DBCC CHECKIDENT ('{$tableName}', RESEED, {$value})"; |
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} elseif ($table === null) { |
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throw new InvalidArgumentException("Table not found: $tableName"); |
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} |
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throw new InvalidArgumentException("There is not sequence associated with table '$tableName'."); |
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} |
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/** |
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* Builds a SQL statement for enabling or disabling integrity check. |
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* @param bool $check whether to turn on or off the integrity check. |
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* @param string $schema the schema of the tables. |
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* @param string $table the table name. |
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* @return string the SQL statement for checking integrity |
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*/ |
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public function checkIntegrity($check = true, $schema = '', $table = '') |
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{ |
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$enable = $check ? 'CHECK' : 'NOCHECK'; |
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$schema = $schema ?: $this->db->getSchema()->defaultSchema; |
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$tableNames = $this->db->getTableSchema($table) ? [$table] : $this->db->getSchema()->getTableNames($schema); |
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$viewNames = $this->db->getSchema()->getViewNames($schema); |
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$tableNames = array_diff($tableNames, $viewNames); |
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$command = ''; |
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foreach ($tableNames as $tableName) { |
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$tableName = $this->db->quoteTableName("{$schema}.{$tableName}"); |
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$command .= "ALTER TABLE $tableName $enable CONSTRAINT ALL; "; |
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} |
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return $command; |
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} |
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/** |
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* Builds a SQL command for adding or updating a comment to a table or a column. The command built will check if a comment |
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* already exists. If so, it will be updated, otherwise, it will be added. |
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* |
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* @param string $comment the text of the comment to be added. The comment will be properly quoted by the method. |
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* @param string $table the table to be commented or whose column is to be commented. The table name will be |
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* properly quoted by the method. |
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* @param string $column optional. The name of the column to be commented. If empty, the command will add the |
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* comment to the table instead. The column name will be properly quoted by the method. |
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* @return string the SQL statement for adding a comment. |
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* @throws InvalidArgumentException if the table does not exist. |
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* @since 2.0.24 |
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*/ |
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protected function buildAddCommentSql($comment, $table, $column = null) |
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{ |
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$tableSchema = $this->db->schema->getTableSchema($table); |
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if ($tableSchema === null) { |
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throw new InvalidArgumentException("Table not found: $table"); |
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} |
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$schemaName = $tableSchema->schemaName ? "N'" . $tableSchema->schemaName . "'": 'SCHEMA_NAME()'; |
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$tableName = "N" . $this->db->quoteValue($tableSchema->name); |
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$columnName = $column ? "N" . $this->db->quoteValue($column) : null; |
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$comment = "N" . $this->db->quoteValue($comment); |
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$functionParams = " |
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@name = N'MS_description', |
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@value = $comment, |
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@level0type = N'SCHEMA', @level0name = $schemaName, |
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@level1type = N'TABLE', @level1name = $tableName" |
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. ($column ? ", @level2type = N'COLUMN', @level2name = $columnName" : '') . ';'; |
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return " |
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IF NOT EXISTS ( |
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SELECT 1 |
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FROM fn_listextendedproperty ( |
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N'MS_description', |
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'SCHEMA', $schemaName, |
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'TABLE', $tableName, |
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" . ($column ? "'COLUMN', $columnName " : ' DEFAULT, DEFAULT ') . " |
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) |
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) |
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EXEC sys.sp_addextendedproperty $functionParams |
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ELSE |
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EXEC sys.sp_updateextendedproperty $functionParams |
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"; |
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} |
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/** |
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* {@inheritdoc} |
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* @since 2.0.8 |
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*/ |
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public function addCommentOnColumn($table, $column, $comment) |
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{ |
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return $this->buildAddCommentSql($comment, $table, $column); |
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} |
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/** |
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* {@inheritdoc} |
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* @since 2.0.8 |
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*/ |
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public function addCommentOnTable($table, $comment) |
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{ |
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return $this->buildAddCommentSql($comment, $table); |
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} |
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/** |
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* Builds a SQL command for removing a comment from a table or a column. The command built will check if a comment |
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* already exists before trying to perform the removal. |
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* |
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* @param string $table the table that will have the comment removed or whose column will have the comment removed. |
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* The table name will be properly quoted by the method. |
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* @param string $column optional. The name of the column whose comment will be removed. If empty, the command |
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* will remove the comment from the table instead. The column name will be properly quoted by the method. |
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* @return string the SQL statement for removing the comment. |
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* @throws InvalidArgumentException if the table does not exist. |
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* @since 2.0.24 |
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*/ |
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protected function buildRemoveCommentSql($table, $column = null) |
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{ |
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$tableSchema = $this->db->schema->getTableSchema($table); |
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if ($tableSchema === null) { |
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throw new InvalidArgumentException("Table not found: $table"); |
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} |
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$schemaName = $tableSchema->schemaName ? "N'" . $tableSchema->schemaName . "'": 'SCHEMA_NAME()'; |
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$tableName = "N" . $this->db->quoteValue($tableSchema->name); |
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$columnName = $column ? "N" . $this->db->quoteValue($column) : null; |
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return " |
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IF EXISTS ( |
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SELECT 1 |
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FROM fn_listextendedproperty ( |
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N'MS_description', |
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'SCHEMA', $schemaName, |
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'TABLE', $tableName, |
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" . ($column ? "'COLUMN', $columnName " : ' DEFAULT, DEFAULT ') . " |
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) |
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) |
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EXEC sys.sp_dropextendedproperty |
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@name = N'MS_description', |
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@level0type = N'SCHEMA', @level0name = $schemaName, |
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@level1type = N'TABLE', @level1name = $tableName" |
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. ($column ? ", @level2type = N'COLUMN', @level2name = $columnName" : '') . ';'; |
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} |
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/** |
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* {@inheritdoc} |
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* @since 2.0.8 |
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*/ |
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public function dropCommentFromColumn($table, $column) |
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{ |
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return $this->buildRemoveCommentSql($table, $column); |
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} |
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/** |
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* {@inheritdoc} |
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* @since 2.0.8 |
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*/ |
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public function dropCommentFromTable($table) |
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{ |
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return $this->buildRemoveCommentSql($table); |
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} |
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|
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/** |
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* Returns an array of column names given model name. |
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* |
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* @param string $modelClass name of the model class |
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* @return array|null array of column names |
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*/ |
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protected function getAllColumnNames($modelClass = null) |
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{ |
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if (!$modelClass) { |
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return null; |
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} |
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/* @var $modelClass \yii\db\ActiveRecord */ |
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$schema = $modelClass::getTableSchema(); |
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return array_keys($schema->columns); |
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} |
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|
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/** |
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* @return bool whether the version of the MSSQL being used is older than 2012. |
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* @throws \yii\base\InvalidConfigException |
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* @throws \yii\db\Exception |
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* @deprecated 2.0.14 Use [[Schema::getServerVersion]] with [[\version_compare()]]. |
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*/ |
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protected function isOldMssql() |
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{ |
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return version_compare($this->db->getSchema()->getServerVersion(), '11', '<'); |
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} |
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|
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/** |
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* {@inheritdoc} |
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* @since 2.0.8 |
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*/ |
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public function selectExists($rawSql) |
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{ |
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return 'SELECT CASE WHEN EXISTS(' . $rawSql . ') THEN 1 ELSE 0 END'; |
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} |
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|
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/** |
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* Normalizes data to be saved into the table, performing extra preparations and type converting, if necessary. |
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* @param string $table the table that data will be saved into. |
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* @param array $columns the column data (name => value) to be saved into the table. |
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* @return array normalized columns |
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*/ |
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private function normalizeTableRowData($table, $columns, &$params) |
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{ |
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if (($tableSchema = $this->db->getSchema()->getTableSchema($table)) !== null) { |
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$columnSchemas = $tableSchema->columns; |
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foreach ($columns as $name => $value) { |
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// @see https://github.com/yiisoft/yii2/issues/12599 |
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if (isset($columnSchemas[$name]) && $columnSchemas[$name]->type === Schema::TYPE_BINARY && $columnSchemas[$name]->dbType === 'varbinary' && (is_string($value) || $value === null)) { |
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$phName = $this->bindParam($value, $params); |
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// @see https://github.com/yiisoft/yii2/issues/12599 |
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$columns[$name] = new Expression("CONVERT(VARBINARY(MAX), $phName)", $params); |
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} |
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} |
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} |
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|
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return $columns; |
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} |
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|
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/** |
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* {@inheritdoc} |
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* Added OUTPUT construction for getting inserted data (for SQL Server 2005 or later) |
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* OUTPUT clause - The OUTPUT clause is new to SQL Server 2005 and has the ability to access |
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* the INSERTED and DELETED tables as is the case with a trigger. |
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*/ |
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public function insert($table, $columns, &$params) |
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{ |
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$columns = $this->normalizeTableRowData($table, $columns, $params); |
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|
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$version2005orLater = version_compare($this->db->getSchema()->getServerVersion(), '9', '>='); |
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|
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list($names, $placeholders, $values, $params) = $this->prepareInsertValues($table, $columns, $params); |
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$cols = []; |
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$columns = []; |
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if ($version2005orLater) { |
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/* @var $schema TableSchema */ |
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$schema = $this->db->getTableSchema($table); |
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foreach ($schema->columns as $column) { |
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if ($column->isComputed) { |
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continue; |
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} |
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$quoteColumnName = $this->db->quoteColumnName($column->name); |
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$cols[] = $quoteColumnName . ' ' |
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. $column->dbType |
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. (in_array($column->dbType, ['char', 'varchar', 'nchar', 'nvarchar', 'binary', 'varbinary']) ? "(MAX)" : "") |
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. ' ' . ($column->allowNull ? "NULL" : ""); |
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$columns[] = 'INSERTED.' . $quoteColumnName; |
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} |
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} |
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$countColumns = count($columns); |
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|
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$sql = 'INSERT INTO ' . $this->db->quoteTableName($table) |
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. (!empty($names) ? ' (' . implode(', ', $names) . ')' : '') |
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. (($version2005orLater && $countColumns) ? ' OUTPUT ' . implode(',', $columns) . ' INTO @temporary_inserted' : '') |
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. (!empty($placeholders) ? ' VALUES (' . implode(', ', $placeholders) . ')' : $values); |
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|
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if ($version2005orLater && $countColumns) { |
|
$sql = 'SET NOCOUNT ON;DECLARE @temporary_inserted TABLE (' . implode(', ', $cols) . ');' . $sql . |
|
';SELECT * FROM @temporary_inserted'; |
|
} |
|
|
|
return $sql; |
|
} |
|
|
|
/** |
|
* {@inheritdoc} |
|
* @see https://docs.microsoft.com/en-us/sql/t-sql/statements/merge-transact-sql |
|
* @see http://weblogs.sqlteam.com/dang/archive/2009/01/31/UPSERT-Race-Condition-With-MERGE.aspx |
|
*/ |
|
public function upsert($table, $insertColumns, $updateColumns, &$params) |
|
{ |
|
$insertColumns = $this->normalizeTableRowData($table, $insertColumns, $params); |
|
|
|
/** @var Constraint[] $constraints */ |
|
list($uniqueNames, $insertNames, $updateNames) = $this->prepareUpsertColumns($table, $insertColumns, $updateColumns, $constraints); |
|
if (empty($uniqueNames)) { |
|
return $this->insert($table, $insertColumns, $params); |
|
} |
|
if ($updateNames === []) { |
|
// there are no columns to update |
|
$updateColumns = false; |
|
} |
|
|
|
$onCondition = ['or']; |
|
$quotedTableName = $this->db->quoteTableName($table); |
|
foreach ($constraints as $constraint) { |
|
$constraintCondition = ['and']; |
|
foreach ($constraint->columnNames as $name) { |
|
$quotedName = $this->db->quoteColumnName($name); |
|
$constraintCondition[] = "$quotedTableName.$quotedName=[EXCLUDED].$quotedName"; |
|
} |
|
$onCondition[] = $constraintCondition; |
|
} |
|
$on = $this->buildCondition($onCondition, $params); |
|
list(, $placeholders, $values, $params) = $this->prepareInsertValues($table, $insertColumns, $params); |
|
|
|
/** |
|
* Fix number of select query params for old MSSQL version that does not support offset correctly. |
|
* @see QueryBuilder::oldBuildOrderByAndLimit |
|
*/ |
|
$insertNamesUsing = $insertNames; |
|
if (strstr($values, 'rowNum = ROW_NUMBER()') !== false) { |
|
$insertNamesUsing = array_merge(['[rowNum]'], $insertNames); |
|
} |
|
|
|
$mergeSql = 'MERGE ' . $this->db->quoteTableName($table) . ' WITH (HOLDLOCK) ' |
|
. 'USING (' . (!empty($placeholders) ? 'VALUES (' . implode(', ', $placeholders) . ')' : ltrim($values, ' ')) . ') AS [EXCLUDED] (' . implode(', ', $insertNamesUsing) . ') ' |
|
. "ON ($on)"; |
|
$insertValues = []; |
|
foreach ($insertNames as $name) { |
|
$quotedName = $this->db->quoteColumnName($name); |
|
if (strrpos($quotedName, '.') === false) { |
|
$quotedName = '[EXCLUDED].' . $quotedName; |
|
} |
|
$insertValues[] = $quotedName; |
|
} |
|
$insertSql = 'INSERT (' . implode(', ', $insertNames) . ')' |
|
. ' VALUES (' . implode(', ', $insertValues) . ')'; |
|
if ($updateColumns === false) { |
|
return "$mergeSql WHEN NOT MATCHED THEN $insertSql;"; |
|
} |
|
|
|
if ($updateColumns === true) { |
|
$updateColumns = []; |
|
foreach ($updateNames as $name) { |
|
$quotedName = $this->db->quoteColumnName($name); |
|
if (strrpos($quotedName, '.') === false) { |
|
$quotedName = '[EXCLUDED].' . $quotedName; |
|
} |
|
$updateColumns[$name] = new Expression($quotedName); |
|
} |
|
} |
|
$updateColumns = $this->normalizeTableRowData($table, $updateColumns, $params); |
|
|
|
list($updates, $params) = $this->prepareUpdateSets($table, $updateColumns, $params); |
|
$updateSql = 'UPDATE SET ' . implode(', ', $updates); |
|
return "$mergeSql WHEN MATCHED THEN $updateSql WHEN NOT MATCHED THEN $insertSql;"; |
|
} |
|
|
|
/** |
|
* {@inheritdoc} |
|
*/ |
|
public function update($table, $columns, $condition, &$params) |
|
{ |
|
return parent::update($table, $this->normalizeTableRowData($table, $columns, $params), $condition, $params); |
|
} |
|
|
|
/** |
|
* {@inheritdoc} |
|
*/ |
|
public function getColumnType($type) |
|
{ |
|
$columnType = parent::getColumnType($type); |
|
// remove unsupported keywords |
|
$columnType = preg_replace("/\s*comment '.*'/i", '', $columnType); |
|
$columnType = preg_replace('/ first$/i', '', $columnType); |
|
|
|
return $columnType; |
|
} |
|
|
|
/** |
|
* {@inheritdoc} |
|
*/ |
|
protected function extractAlias($table) |
|
{ |
|
if (preg_match('/^\[.*\]$/', $table)) { |
|
return false; |
|
} |
|
|
|
return parent::extractAlias($table); |
|
} |
|
|
|
/** |
|
* Builds a SQL statement for dropping constraints for column of table. |
|
* |
|
* @param string $table the table whose constraint is to be dropped. The name will be properly quoted by the method. |
|
* @param string $column the column whose constraint is to be dropped. The name will be properly quoted by the method. |
|
* @param string $type type of constraint, leave empty for all type of constraints(for example: D - default, 'UQ' - unique, 'C' - check) |
|
* @see https://docs.microsoft.com/sql/relational-databases/system-catalog-views/sys-objects-transact-sql |
|
* @return string the DROP CONSTRAINTS SQL |
|
*/ |
|
private function dropConstraintsForColumn($table, $column, $type='') |
|
{ |
|
return "DECLARE @tableName VARCHAR(MAX) = '" . $this->db->quoteTableName($table) . "' |
|
DECLARE @columnName VARCHAR(MAX) = '{$column}' |
|
|
|
WHILE 1=1 BEGIN |
|
DECLARE @constraintName NVARCHAR(128) |
|
SET @constraintName = (SELECT TOP 1 OBJECT_NAME(cons.[object_id]) |
|
FROM ( |
|
SELECT sc.[constid] object_id |
|
FROM [sys].[sysconstraints] sc |
|
JOIN [sys].[columns] c ON c.[object_id]=sc.[id] AND c.[column_id]=sc.[colid] AND c.[name]=@columnName |
|
WHERE sc.[id] = OBJECT_ID(@tableName) |
|
UNION |
|
SELECT object_id(i.[name]) FROM [sys].[indexes] i |
|
JOIN [sys].[columns] c ON c.[object_id]=i.[object_id] AND c.[name]=@columnName |
|
JOIN [sys].[index_columns] ic ON ic.[object_id]=i.[object_id] AND i.[index_id]=ic.[index_id] AND c.[column_id]=ic.[column_id] |
|
WHERE i.[is_unique_constraint]=1 and i.[object_id]=OBJECT_ID(@tableName) |
|
) cons |
|
JOIN [sys].[objects] so ON so.[object_id]=cons.[object_id] |
|
" . (!empty($type) ? " WHERE so.[type]='{$type}'" : "") . ") |
|
IF @constraintName IS NULL BREAK |
|
EXEC (N'ALTER TABLE ' + @tableName + ' DROP CONSTRAINT [' + @constraintName + ']') |
|
END"; |
|
} |
|
|
|
/** |
|
* Drop all constraints before column delete |
|
* {@inheritdoc} |
|
*/ |
|
public function dropColumn($table, $column) |
|
{ |
|
return $this->dropConstraintsForColumn($table, $column) . "\nALTER TABLE " . $this->db->quoteTableName($table) |
|
. " DROP COLUMN " . $this->db->quoteColumnName($column); |
|
} |
|
}
|
|
|