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ROW
The ROW()
function constructs a RECORD
object that may be used in an
expression or assigned into a RECORD
type variable.
Example
The following function creates a record value using ROW()
:
delimiter //
create function f() returns int as
declare
r record(a int, b int);
begin
r = row(1, 2);
return r.a + r.b;
end //
delimiter ;
Here’s an example use of this function:
memsql> select f();
+------+
| f() |
+------+
| 3 |
+------+
Type Inference
The data types of the
fields of the new RECORD
object created are inferred from the context of
the function or stored procedure. For example, if you assign the value of
a new record created with ROW()
into a record variable, the types of the
fields of the new record will be the same as the types of the fields of
the record variable to which the new record value is assigned. In the
example above, the types of the two fields of the
record created by ROW are inferred to be int
based on the assignment
to the variable r
.
Related Topics
-
RECORD: The
RECORD
data type is an encapsulated group of named fields. -
CREATE_ARRAY:
CREATE_ARRAY()
is used to create an array object.