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<?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\oci;
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use yii\base\InvalidArgumentException;
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use yii\db\Connection;
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use yii\db\Constraint;
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use yii\db\Exception;
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use yii\db\Expression;
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use yii\db\Query;
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use yii\helpers\StringHelper;
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use yii\db\ExpressionInterface;
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/**
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* QueryBuilder is the query builder for Oracle databases.
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*
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* @author Qiang Xue <qiang.xue@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 => 'NUMBER(10) NOT NULL PRIMARY KEY',
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Schema::TYPE_UPK => 'NUMBER(10) UNSIGNED NOT NULL PRIMARY KEY',
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Schema::TYPE_BIGPK => 'NUMBER(20) NOT NULL PRIMARY KEY',
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Schema::TYPE_UBIGPK => 'NUMBER(20) UNSIGNED NOT NULL PRIMARY KEY',
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Schema::TYPE_CHAR => 'CHAR(1)',
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Schema::TYPE_STRING => 'VARCHAR2(255)',
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Schema::TYPE_TEXT => 'CLOB',
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Schema::TYPE_TINYINT => 'NUMBER(3)',
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Schema::TYPE_SMALLINT => 'NUMBER(5)',
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Schema::TYPE_INTEGER => 'NUMBER(10)',
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Schema::TYPE_BIGINT => 'NUMBER(20)',
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Schema::TYPE_FLOAT => 'NUMBER',
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Schema::TYPE_DOUBLE => 'NUMBER',
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Schema::TYPE_DECIMAL => 'NUMBER',
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Schema::TYPE_DATETIME => 'TIMESTAMP',
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Schema::TYPE_TIMESTAMP => 'TIMESTAMP',
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Schema::TYPE_TIME => 'TIMESTAMP',
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Schema::TYPE_DATE => 'DATE',
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Schema::TYPE_BINARY => 'BLOB',
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Schema::TYPE_BOOLEAN => 'NUMBER(1)',
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Schema::TYPE_MONEY => 'NUMBER(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\oci\conditions\InConditionBuilder',
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'yii\db\conditions\LikeCondition' => 'yii\db\oci\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, $offset)
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{
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$orderBy = $this->buildOrderBy($orderBy);
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if ($orderBy !== '') {
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$sql .= $this->separator . $orderBy;
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}
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$filters = [];
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if ($this->hasOffset($offset)) {
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$filters[] = 'rowNumId > ' . $offset;
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}
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if ($this->hasLimit($limit)) {
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$filters[] = 'rownum <= ' . $limit;
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}
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if (empty($filters)) {
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return $sql;
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}
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$filter = implode(' AND ', $filters);
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return <<<EOD
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WITH USER_SQL AS ($sql),
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PAGINATION AS (SELECT USER_SQL.*, rownum as rowNumId FROM USER_SQL)
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SELECT *
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FROM PAGINATION
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WHERE $filter
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EOD;
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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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*
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* @param string $table the table to be renamed. The name will be properly quoted by the method.
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* @param string $newName the new table name. The name will be properly quoted by the method.
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* @return string the SQL statement for renaming a DB table.
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*/
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public function renameTable($table, $newName)
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{
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return 'ALTER TABLE ' . $this->db->quoteTableName($table) . ' RENAME TO ' . $this->db->quoteTableName($newName);
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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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*
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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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return 'ALTER TABLE ' . $this->db->quoteTableName($table) . ' MODIFY ' . $this->db->quoteColumnName($column) . ' ' . $this->getColumnType($type);
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}
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/**
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* Builds a SQL statement for dropping an index.
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*
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* @param string $name the name of the index to be dropped. The name will be properly quoted by the method.
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* @param string $table the table whose index is to be dropped. The name will be properly quoted by the method.
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* @return string the SQL statement for dropping an index.
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*/
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public function dropIndex($name, $table)
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{
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return 'DROP INDEX ' . $this->db->quoteTableName($name);
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}
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/**
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* {@inheritdoc}
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*/
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public function resetSequence($table, $value = null)
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{
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$tableSchema = $this->db->getTableSchema($table);
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if ($tableSchema === null) {
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throw new InvalidArgumentException("Unknown table: $table");
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}
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if ($tableSchema->sequenceName === null) {
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return '';
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}
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if ($value !== null) {
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$value = (int) $value;
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} else {
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// use master connection to get the biggest PK value
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$value = $this->db->useMaster(function (Connection $db) use ($tableSchema) {
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return $db->createCommand("SELECT MAX(\"{$tableSchema->primaryKey}\") FROM \"{$tableSchema->name}\"")->queryScalar();
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}) + 1;
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}
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return "DROP SEQUENCE \"{$tableSchema->name}_SEQ\";"
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. "CREATE SEQUENCE \"{$tableSchema->name}_SEQ\" START WITH {$value} INCREMENT BY 1 NOMAXVALUE NOCACHE";
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}
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/**
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* {@inheritdoc}
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*/
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public function addForeignKey($name, $table, $columns, $refTable, $refColumns, $delete = null, $update = null)
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{
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$sql = 'ALTER TABLE ' . $this->db->quoteTableName($table)
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. ' ADD CONSTRAINT ' . $this->db->quoteColumnName($name)
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. ' FOREIGN KEY (' . $this->buildColumns($columns) . ')'
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. ' REFERENCES ' . $this->db->quoteTableName($refTable)
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. ' (' . $this->buildColumns($refColumns) . ')';
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if ($delete !== null) {
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$sql .= ' ON DELETE ' . $delete;
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}
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if ($update !== null) {
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throw new Exception('Oracle does not support ON UPDATE clause.');
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Fix batchInsert bug in oci. default batchInsert sql is ``` insert into tableName(col1, col2, col3...) value(`col11`, `col12`,`col13`.... ),(`col21`, `col22`,`col23`.... ); ``` which is illegal in oracle db. Change it to ``` insert into tableName(col1, col2, col3...) select 'col11', 'col12', 'col13' from dual union select 'col21', 'col22', 'col23' from dual union select 'col31', 'col32', 'col33' from dual; ```
10 years ago
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}
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return $sql;
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Fix batchInsert bug in oci. default batchInsert sql is ``` insert into tableName(col1, col2, col3...) value(`col11`, `col12`,`col13`.... ),(`col21`, `col22`,`col23`.... ); ``` which is illegal in oracle db. Change it to ``` insert into tableName(col1, col2, col3...) select 'col11', 'col12', 'col13' from dual union select 'col21', 'col22', 'col23' from dual union select 'col31', 'col32', 'col33' from dual; ```
10 years ago
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}
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/**
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* {@inheritdoc}
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*/
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protected function prepareInsertValues($table, $columns, $params = [])
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{
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list($names, $placeholders, $values, $params) = parent::prepareInsertValues($table, $columns, $params);
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if (!$columns instanceof Query && empty($names)) {
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$tableSchema = $this->db->getSchema()->getTableSchema($table);
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if ($tableSchema !== null) {
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$columns = !empty($tableSchema->primaryKey) ? $tableSchema->primaryKey : [reset($tableSchema->columns)->name];
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foreach ($columns as $name) {
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$names[] = $this->db->quoteColumnName($name);
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$placeholders[] = 'DEFAULT';
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}
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}
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}
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return [$names, $placeholders, $values, $params];
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}
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/**
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* {@inheritdoc}
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* @see https://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_9016.htm#SQLRF01606
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*/
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public function upsert($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, $params);
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if (!empty($placeholders)) {
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$usingSelectValues = [];
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foreach ($insertNames as $index => $name) {
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$usingSelectValues[$name] = new Expression($placeholders[$index]);
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}
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$usingSubQuery = (new Query())
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->select($usingSelectValues)
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->from('DUAL');
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list($usingValues, $params) = $this->build($usingSubQuery, $params);
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}
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$mergeSql = 'MERGE INTO ' . $this->db->quoteTableName($table) . ' '
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. 'USING (' . (isset($usingValues) ? $usingValues : ltrim($values, ' ')) . ') "EXCLUDED" '
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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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* Generates a batch INSERT SQL statement.
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*
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* For example,
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*
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* ```php
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* $sql = $queryBuilder->batchInsert('user', ['name', 'age'], [
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* ['Tom', 30],
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* ['Jane', 20],
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* ['Linda', 25],
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* ]);
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* ```
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*
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* Note that the values in each row must match the corresponding column names.
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*
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* @param string $table the table that new rows will be inserted into.
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* @param array $columns the column names
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* @param array|\Generator $rows the rows to be batch inserted into the table
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* @return string the batch INSERT SQL statement
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*/
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public function batchInsert($table, $columns, $rows, &$params = [])
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{
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if (empty($rows)) {
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return '';
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}
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$schema = $this->db->getSchema();
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if (($tableSchema = $schema->getTableSchema($table)) !== null) {
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$columnSchemas = $tableSchema->columns;
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} else {
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$columnSchemas = [];
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}
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$values = [];
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foreach ($rows as $row) {
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$vs = [];
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foreach ($row as $i => $value) {
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if (isset($columns[$i], $columnSchemas[$columns[$i]])) {
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$value = $columnSchemas[$columns[$i]]->dbTypecast($value);
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}
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if (is_string($value)) {
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$value = $schema->quoteValue($value);
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} elseif (is_float($value)) {
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// ensure type cast always has . as decimal separator in all locales
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$value = StringHelper::floatToString($value);
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} elseif ($value === false) {
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$value = 0;
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} elseif ($value === null) {
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$value = 'NULL';
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} elseif ($value instanceof ExpressionInterface) {
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$value = $this->buildExpression($value, $params);
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}
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$vs[] = $value;
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}
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$values[] = '(' . implode(', ', $vs) . ')';
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}
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if (empty($values)) {
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return '';
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}
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foreach ($columns as $i => $name) {
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$columns[$i] = $schema->quoteColumnName($name);
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}
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$tableAndColumns = ' INTO ' . $schema->quoteTableName($table)
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. ' (' . implode(', ', $columns) . ') VALUES ';
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return 'INSERT ALL ' . $tableAndColumns . implode($tableAndColumns, $values) . ' SELECT 1 FROM SYS.DUAL';
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}
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/**
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* {@inheritdoc}
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* @since 2.0.8
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*/
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public function selectExists($rawSql)
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{
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return 'SELECT CASE WHEN EXISTS(' . $rawSql . ') THEN 1 ELSE 0 END FROM DUAL';
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}
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/**
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* {@inheritdoc}
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* @since 2.0.8
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*/
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public function dropCommentFromColumn($table, $column)
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{
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return 'COMMENT ON COLUMN ' . $this->db->quoteTableName($table) . '.' . $this->db->quoteColumnName($column) . " IS ''";
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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 'COMMENT ON TABLE ' . $this->db->quoteTableName($table) . " IS ''";
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}
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}
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