public function QueryConditionInterface::isNull

cis7 query.inc public QueryConditionInterface::isNull($field)
cle7 query.inc public QueryConditionInterface::isNull($field)
elmsmedia7 query.inc public QueryConditionInterface::isNull($field)
icor7 query.inc public QueryConditionInterface::isNull($field)
meedjum_blog7 query.inc public QueryConditionInterface::isNull($field)
mooc7 query.inc public QueryConditionInterface::isNull($field)

Sets a condition that the specified field be NULL.

Parameters

$field: The name of the field to check.

Return value

QueryConditionInterface The called object.

6 methods override QueryConditionInterface::isNull()
DatabaseCondition::isNull in includes/database/query.inc
Implements QueryConditionInterface::isNull().
DeleteQuery::isNull in includes/database/query.inc
Implements QueryConditionInterface::isNull().
MergeQuery::isNull in includes/database/query.inc
Implements QueryConditionInterface::isNull().
SelectQuery::isNull in includes/database/select.inc
Sets a condition that the specified field be NULL.
SelectQueryExtender::isNull in includes/database/select.inc
Sets a condition that the specified field be NULL.

... See full list

File

includes/database/query.inc, line 71
Non-specific Database query code. Used by all engines.

Class

QueryConditionInterface
Interface for a conditional clause in a query.

Code

public function isNull($field);