MergeQuery::expression
public function MergeQuery::expression
public MergeQuery::expression($field, $expression, array $arguments = NULL)
Specifies fields to be updated as an expression.
Expression fields are cases such as counter = counter + 1. This method takes precedence over MergeQuery::updateFields() and it's wrappers, MergeQuery::key() and MergeQuery::fields().
Parameters
$field: The field to set.
$expression: The field will be set to the value of this expression. This parameter may include named placeholders.
$arguments: If specified, this is an array of key/value pairs for named placeholders corresponding to the expression.
Return value
MergeQuery The called object.
File
- includes/database/query.inc, line 1397
- Non-specific Database query code. Used by all engines.
Class
- MergeQuery
- General class for an abstracted MERGE query operation.
Code
public function expression($field, $expression, array $arguments = NULL) { $this->expressionFields[$field] = array( 'expression' => $expression, 'arguments' => $arguments, ); $this->needsUpdate = TRUE; return $this; }
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https://api.drupal.org/api/drupal/includes!database!query.inc/function/MergeQuery::expression/7.x