IF

Logical functions

Syntax

Version 1:

IF condition_1
    THEN result_1
[ ELSEIF condition_2
    THEN result_2
  ... ]
ELSE
    default_result
END

Version 2:

IF(
    condition_1, result_1,
  [ condition_2, result_2,
    ... ]
    default_result
)

Description

Checks conditional expressions condition_1, result_1, ... and returns the matching result for the first condition found to be TRUE. IF all conditional expressions are FALSE, it returns default_result.

Argument types:

• condition_1 — Any
• result_1 — Any
• condition_2 — Any
• result_2 — Any
• default_result — Any

Return type: Depends on argument types

Examples

IF("Hello world" LIKE "%el%", "is like", "is not like") = "is like"

IF
    [Profit] > 100
        THEN "High"
    ELSEIF [Profit] > 25
        THEN "Medium"
    ELSE "Low"
END

Data source support

Materialized Dataset, ClickHouse 1.1, Microsoft SQL Server 2017 (14.0), MySQL 5.6, PostgreSQL 9.3.