IFNULL
Syntax
IFNULL( check_value, alt_value )
Description
Returns check_value
if it's not NULL
. Otherwise returns alt_value
.
Argument types:
check_value
—Any
alt_value
—Any
Return type: Same type as (check_value
, alt_value
)
Note
Arguments (check_value
, alt_value
) must be of the same type.
Example
[sales] | IFNULL([sales], -100.0) |
---|---|
432.40 |
432.40 |
77.00 |
77.00 |
12000.00 |
12000.00 |
NULL |
-100.00 |
34.25 |
34.25 |
128.00 |
128.00 |
0.00 |
0.00 |
NULL |
-100.00 |
Data source support
ClickHouse 21.8
, Files
, Google Sheets
, Microsoft SQL Server 2017 (14.0)
, MySQL 5.7
, Oracle Database 12c (12.1)
, PostgreSQL 9.3
, Yandex Documents
, YDB
.