Login Register

db\QueryInterface exists()

exists() public abstract method

Returns a value indicating whether the query result contains any row of data.

public abstract boolean exists ( $db = null )
$db	yii\db\Connection	The database connection used to execute the query. If this parameter is not given, the `db` application component will be used.
return	boolean	Whether the query result contains any row of data.

Links:

http://www.yiiframework.com/doc-2.0/yii-db-queryinterface.html#exists()-detail

doc_Yii

2016-10-30 16:59:25

Comments

Leave a Comment

Please login to continue.

Popular Articles

QueryInterface::exists public QueryInterface::exists($field, $langcode = NULL) Queries for a non-empty value on a field. Parameters $field: Name of a field. $langcode: Lan

db\QueryInterface count() count() public abstract method Returns the number of records. public abstract integer count ( $q = '*', $db = null )$q string The COUNT expres

db\QueryInterface andFilterWhere() andFilterWhere() public abstract method Adds an additional WHERE condition to the existing one ignoring empty parameters. The new condition and t

db\QueryInterface offset() offset() public abstract method Sets the OFFSET part of the query. public abstract $this offset ( $offset )$offset integer The offset. Use nul

db\QueryInterface limit() limit() public abstract method Sets the LIMIT part of the query. public abstract $this limit ( $limit )$limit integer The limit. Use null or n