* @since 2.0 */ class QueryBuilder extends \yii\db\QueryBuilder { /** * @var array mapping from abstract column types (keys) to physical column types (values). */ public $typeMap = array( Schema::TYPE_PK => 'serial NOT NULL PRIMARY KEY', Schema::TYPE_BIGPK => 'bigserial NOT NULL PRIMARY KEY', Schema::TYPE_STRING => 'varchar(255)', Schema::TYPE_TEXT => 'text', Schema::TYPE_SMALLINT => 'smallint', Schema::TYPE_INTEGER => 'integer', Schema::TYPE_BIGINT => 'bigint', Schema::TYPE_FLOAT => 'double precision', Schema::TYPE_DECIMAL => 'numeric(10,0)', Schema::TYPE_DATETIME => 'timestamp', Schema::TYPE_TIMESTAMP => 'timestamp', Schema::TYPE_TIME => 'time', Schema::TYPE_DATE => 'date', Schema::TYPE_BINARY => 'bytea', Schema::TYPE_BOOLEAN => 'boolean', Schema::TYPE_MONEY => 'numeric(19,4)', ); /** * Builds a SQL statement for dropping an index. * @param string $name the name of the index to be dropped. The name will be properly quoted by the method. * @param string $table the table whose index is to be dropped. The name will be properly quoted by the method. * @return string the SQL statement for dropping an index. */ public function dropIndex($name, $table) { return 'DROP INDEX ' . $this->db->quoteTableName($name); } /** * Builds a SQL statement for renaming a DB table. * @param string $oldName the table to be renamed. The name will be properly quoted by the method. * @param string $newName the new table name. The name will be properly quoted by the method. * @return string the SQL statement for renaming a DB table. */ public function renameTable($oldName, $newName) { return 'ALTER TABLE ' . $this->db->quoteTableName($oldName) . ' RENAME TO ' . $this->db->quoteTableName($newName); } /** * Builds a SQL statement for changing the definition of a column. * @param string $table the table whose column is to be changed. The table name will be properly quoted by the method. * @param string $column the name of the column to be changed. The name will be properly quoted by the method. * @param string $type the new column type. The [[getColumnType()]] method will be invoked to convert abstract * column type (if any) into the physical one. Anything that is not recognized as abstract type will be kept * in the generated SQL. For example, 'string' will be turned into 'varchar(255)', while 'string not null' * will become 'varchar(255) not null'. * @return string the SQL statement for changing the definition of a column. */ public function alterColumn($table, $column, $type) { return 'ALTER TABLE ' . $this->db->quoteTableName($table) . ' ALTER COLUMN ' . $this->db->quoteColumnName($column) . ' TYPE ' . $this->getColumnType($type); } }