row
Description
Creates a named STRUCT or ROW value from the given values. It supports unnamed struct. You do not need to specify the field names. StarRocks automatically generates column names, such as col1, col2,....
This function is supported from v3.1 onwards.
struct() is the alias of row().
Syntax
STRUCT row(ANY val, ...)
Parameters
val: an expression of any supported type.
This function is a variable argument function. You must pass at least one argument. value is nullable. Separate multiple values with a comma (,).
Return value
Returns a STRUCT value which consists of the input values.
Examples
select row(1,"Apple","Pear");
+-----------------------------------------+
| row(1, 'Apple', 'Pear') |
+-----------------------------------------+
| {"col1":1,"col2":"Apple","col3":"Pear"} |
+-----------------------------------------+
select row("Apple", NULL);
+------------------------------+
| row('Apple', NULL) |
+------------------------------+
| {"col1":"Apple","col2":null} |
+------------------------------+
select struct(1,2,3);
+------------------------------+
| row(1, 2, 3) |
+------------------------------+
| {"col1":1,"col2":2,"col3":3} |
+------------------------------+