SQLWriteExpression
interface SQLWriteExpression (View source)
Represents a SQL expression which may have field values assigned (UPDATE/INSERT Expressions)
Methods
Adds assignments for a list of several fields.
Sets the list of assignments to the given list
Assigns a value to a field using the literal SQL expression, rather than a value to be escaped
Details
SQLWriteExpression
addAssignments(array $assignments)
Adds assignments for a list of several fields.
For multi-row objects this applies this to the current row.
Note that field values must not be escaped, as these will be internally parameterised by the database engine.
// Basic assignments
$query->addAssignments(array(
'"Object"."Title"' => 'Bob',
'"Object"."Description"' => 'Bob was here'
))
// Parameterised assignments
$query->addAssignments(array(
'"Object"."Title"' => array('?' => 'Bob')),
'"Object"."Description"' => array('?' => null))
))
// Complex parameters
$query->addAssignments(array(
'"Object"."Score"' => array('MAX(?,?)' => array(1, 3))
));
// Assigment of literal SQL for a field. The empty array is
// important to denote the zero-number paramater list
$query->addAssignments(array(
'"Object"."Score"' => array('NOW()' => array())
));
SQLWriteExpression
setAssignments(array $assignments)
Sets the list of assignments to the given list
For multi-row objects this applies this to the current row.
array
getAssignments()
Retrieves the list of assignments in parameterised format
For multi-row objects returns assignments for the current row.
SQLWriteExpression
assign(string $field, mixed $value)
Set the value for a single field
For multi-row objects this applies this to the current row.
E.g.
// Literal assignment
$query->assign('"Object"."Description"', 'lorum ipsum'));
// Single parameter
$query->assign('"Object"."Title"', array('?' => 'Bob'));
// Complex parameters
$query->assign('"Object"."Score"', array('MAX(?,?)' => array(1, 3));
SQLWriteExpression
assignSQL(string $field, string $sql)
Assigns a value to a field using the literal SQL expression, rather than a value to be escaped
For multi-row objects this applies this to the current row.