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124 lines
4.3 KiB
PHP
124 lines
4.3 KiB
PHP
<?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\InvalidParamException;
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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 $typeMap = [
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Schema::TYPE_PK => 'int IDENTITY PRIMARY KEY',
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Schema::TYPE_BIGPK => 'bigint IDENTITY PRIMARY KEY',
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Schema::TYPE_STRING => 'varchar(255)',
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Schema::TYPE_TEXT => 'text',
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Schema::TYPE_SMALLINT => 'smallint',
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Schema::TYPE_INTEGER => 'int',
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Schema::TYPE_BIGINT => 'bigint',
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Schema::TYPE_FLOAT => 'float',
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Schema::TYPE_DECIMAL => 'decimal',
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Schema::TYPE_DATETIME => 'datetime',
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Schema::TYPE_TIMESTAMP => 'timestamp',
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Schema::TYPE_TIME => 'time',
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Schema::TYPE_DATE => 'date',
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Schema::TYPE_BINARY => 'binary',
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Schema::TYPE_BOOLEAN => 'bit',
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Schema::TYPE_MONEY => 'decimal(19,4)',
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];
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// public function update($table, $columns, $condition, &$params)
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// {
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// return '';
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// }
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// public function delete($table, $condition, &$params)
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// {
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// return '';
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// }
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// public function buildLimit($limit, $offset)
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// {
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// return '';
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// }
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// public function resetSequence($table, $value = null)
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// {
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// return '';
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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 $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, $newName)
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{
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return "sp_rename '$table', '$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 $name 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, $name, $newName)
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{
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return "sp_rename '$table.$name', '$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 $type the new column type. The {@link getColumnType} method will be invoked to convert abstract column type (if any)
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* into the physical one. Anything that is not recognized as abstract type will be kept in the generated SQL.
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* For example, 'string' will be turned into 'varchar(255)', while 'string not null' will become 'varchar(255) not null'.
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* @return string the SQL statement for changing the definition of a column.
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*/
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public function alterColumn($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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* Builds a SQL statement for enabling or disabling integrity check.
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* @param boolean $check whether to turn on or off the integrity check.
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* @param string $schema the schema of the tables. Defaults to empty string, meaning the current or default schema.
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* @param string $table the table name. Defaults to empty string, meaning that no table will be changed.
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* @return string the SQL statement for checking integrity
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* @throws InvalidParamException if the table does not exist or there is no sequence associated with the table.
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*/
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public function checkIntegrity($check = true, $schema = '', $table = '')
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{
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if ($schema !== '') {
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$table = "{$schema}.{$table}";
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}
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$table = $this->db->quoteTableName($table);
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if ($this->db->getTableSchema($table) === null) {
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throw new InvalidParamException("Table not found: $table");
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}
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$enable = $check ? 'CHECK' : 'NOCHECK';
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return "ALTER TABLE {$table} {$enable} CONSTRAINT ALL";
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}
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}
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