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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\InvalidParamException;
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use yii\db\Connection;
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use yii\db\Exception;
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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 $typeMap = [
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Schema::TYPE_PK => 'NUMBER(10) NOT NULL PRIMARY KEY',
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Schema::TYPE_BIGPK => 'NUMBER(20) NOT NULL PRIMARY KEY',
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Schema::TYPE_STRING => 'VARCHAR2(255)',
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Schema::TYPE_TEXT => 'CLOB',
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Schema::TYPE_SMALLINT => 'NUMBER(5)',
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Schema::TYPE_INTEGER => 'NUMBER(10)',
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Schema::TYPE_BIGINT => 'NUMBER(20)',
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Schema::TYPE_FLOAT => 'NUMBER',
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Schema::TYPE_DECIMAL => 'NUMBER',
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Schema::TYPE_DATETIME => 'TIMESTAMP',
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Schema::TYPE_TIMESTAMP => 'TIMESTAMP',
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Schema::TYPE_TIME => 'TIMESTAMP',
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Schema::TYPE_DATE => 'DATE',
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Schema::TYPE_BINARY => 'BLOB',
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Schema::TYPE_BOOLEAN => 'NUMBER(1)',
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Schema::TYPE_MONEY => 'NUMBER(19,4)',
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];
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/**
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* @inheritdoc
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*/
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public function buildOrderByAndLimit($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 InvalidParamException("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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