doris/docs/en/sql-reference/sql-functions/conditional-functions/coalesce.md

title, language

title	language
coalesce	en

coalesce

description

Syntax

coalesce(expr1, expr2, ...., expr_n)

Returns the first non empty expression in the parameter (from left to right)

example

mysql> select coalesce(NULL, '1111', '0000');
+--------------------------------+
| coalesce(NULL, '1111', '0000') |
+--------------------------------+
| 1111                           |
+--------------------------------+

keyword

COALESCE