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420 lines
17 KiB
420 lines
17 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\db\Constraint; |
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use yii\db\Expression; |
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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 $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($limit)) { |
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$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 $type the new column type. The [[getColumnType]] method will be invoked to convert abstract column type (if any) |
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* into the physical one. Anything that is not recognized as abstract type will be kept in the generated SQL. |
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* For example, 'string' will be turned into 'varchar(255)', while 'string not null' will become 'varchar(255) not null'. |
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* @return string the SQL statement for changing the definition of a column. |
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*/ |
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public function alterColumn($table, $column, $type) |
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{ |
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$type = $this->getColumnType($type); |
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$sql = 'ALTER TABLE ' . $this->db->quoteTableName($table) . ' ALTER COLUMN ' |
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. $this->db->quoteColumnName($column) . ' ' |
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. $this->getColumnType($type); |
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return $sql; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function addDefaultValue($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 $command; |
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} |
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/** |
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* {@inheritdoc} |
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* @since 2.0.8 |
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*/ |
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public function addCommentOnColumn($table, $column, $comment) |
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{ |
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return "sp_updateextendedproperty @name = N'MS_Description', @value = {$this->db->quoteValue($comment)}, @level1type = N'Table', @level1name = {$this->db->quoteTableName($table)}, @level2type = N'Column', @level2name = {$this->db->quoteColumnName($column)}"; |
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} |
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/** |
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* {@inheritdoc} |
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* @since 2.0.8 |
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*/ |
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public function addCommentOnTable($table, $comment) |
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{ |
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return "sp_updateextendedproperty @name = N'MS_Description', @value = {$this->db->quoteValue($comment)}, @level1type = N'Table', @level1name = {$this->db->quoteTableName($table)}"; |
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} |
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/** |
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* {@inheritdoc} |
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* @since 2.0.8 |
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*/ |
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public function dropCommentFromColumn($table, $column) |
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{ |
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return "sp_dropextendedproperty @name = N'MS_Description', @level1type = N'Table', @level1name = {$this->db->quoteTableName($table)}, @level2type = N'Column', @level2name = {$this->db->quoteColumnName($column)}"; |
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} |
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/** |
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* {@inheritdoc} |
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* @since 2.0.8 |
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*/ |
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public function dropCommentFromTable($table) |
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{ |
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return "sp_dropextendedproperty @name = N'MS_Description', @level1type = N'Table', @level1name = {$this->db->quoteTableName($table)}"; |
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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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* @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($this->db->getSchema()->getServerVersion(), '11', '<'); |
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} |
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/** |
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* {@inheritdoc} |
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* @since 2.0.8 |
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*/ |
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public function selectExists($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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* 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) || $value === null)) { |
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$exParams = []; |
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$phName = $this->bindParam($value, $exParams); |
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$columns[$name] = new Expression("CONVERT(VARBINARY, $phName)", $exParams); |
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} |
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} |
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} |
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return $columns; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function insert($table, $columns, &$params) |
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{ |
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return parent::insert($table, $this->normalizeTableRowData($table, $columns, $params), $params); |
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} |
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/** |
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* {@inheritdoc} |
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* @see https://docs.microsoft.com/en-us/sql/t-sql/statements/merge-transact-sql |
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* @see http://weblogs.sqlteam.com/dang/archive/2009/01/31/UPSERT-Race-Condition-With-MERGE.aspx |
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*/ |
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public function upsert($table, $insertColumns, $updateColumns, &$params) |
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{ |
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/** @var Constraint[] $constraints */ |
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list($uniqueNames, $insertNames, $updateNames) = $this->prepareUpsertColumns($table, $insertColumns, $updateColumns, $constraints); |
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if (empty($uniqueNames)) { |
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return $this->insert($table, $insertColumns, $params); |
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} |
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$onCondition = ['or']; |
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$quotedTableName = $this->db->quoteTableName($table); |
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foreach ($constraints as $constraint) { |
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$constraintCondition = ['and']; |
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foreach ($constraint->columnNames as $name) { |
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$quotedName = $this->db->quoteColumnName($name); |
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$constraintCondition[] = "$quotedTableName.$quotedName=[EXCLUDED].$quotedName"; |
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} |
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$onCondition[] = $constraintCondition; |
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} |
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$on = $this->buildCondition($onCondition, $params); |
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list(, $placeholders, $values, $params) = $this->prepareInsertValues($table, $insertColumns, $params); |
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$mergeSql = 'MERGE ' . $this->db->quoteTableName($table) . ' WITH (HOLDLOCK) ' |
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. 'USING (' . (!empty($placeholders) ? 'VALUES (' . implode(', ', $placeholders) . ')' : ltrim($values, ' ')) . ') AS [EXCLUDED] (' . implode(', ', $insertNames) . ') ' |
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. "ON ($on)"; |
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$insertValues = []; |
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foreach ($insertNames as $name) { |
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$quotedName = $this->db->quoteColumnName($name); |
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if (strrpos($quotedName, '.') === false) { |
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$quotedName = '[EXCLUDED].' . $quotedName; |
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} |
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$insertValues[] = $quotedName; |
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} |
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$insertSql = 'INSERT (' . implode(', ', $insertNames) . ')' |
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. ' VALUES (' . implode(', ', $insertValues) . ')'; |
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if ($updateColumns === false) { |
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return "$mergeSql WHEN NOT MATCHED THEN $insertSql;"; |
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} |
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if ($updateColumns === true) { |
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$updateColumns = []; |
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foreach ($updateNames as $name) { |
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$quotedName = $this->db->quoteColumnName($name); |
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if (strrpos($quotedName, '.') === false) { |
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$quotedName = '[EXCLUDED].' . $quotedName; |
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} |
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$updateColumns[$name] = new Expression($quotedName); |
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} |
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} |
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list($updates, $params) = $this->prepareUpdateSets($table, $updateColumns, $params); |
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$updateSql = 'UPDATE SET ' . implode(', ', $updates); |
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return "$mergeSql WHEN MATCHED THEN $updateSql WHEN NOT MATCHED THEN $insertSql;"; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function update($table, $columns, $condition, &$params) |
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{ |
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return parent::update($table, $this->normalizeTableRowData($table, $columns, $params), $condition, $params); |
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} |
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}
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