QueryConditionInterface::isNull
public function QueryConditionInterface::isNull
public QueryConditionInterface::isNull($field)
Sets a condition that the specified field be NULL.
Parameters
$field: The name of the field to check.
Return value
QueryConditionInterface The called object.
File
- includes/database/query.inc, line 71
- Non-specific Database query code. Used by all engines.
Class
- QueryConditionInterface
- Interface for a conditional clause in a query.
Code
public function isNull($field);
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