SIGN

Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition

The SIGN() function produces the sign of a numeric value, being any value of -1, 0, 1

SELECT sign(-5), sign(0), sign(3);

create.select(sign(-5), sign(0), sign(3)).fetch();

The result being

+------+------+------+
| sign | sign | sign |
+------+------+------+
|   -1 |    0 |    1 |
+------+------+------+

Dialect support

This example using jOOQ:

sign(3)

Translates to the following dialect specific expressions:

-- ACCESS
sgn(3)

-- ASE, AURORA_MYSQL, AURORA_POSTGRES, BIGQUERY, COCKROACHDB, CUBRID, DB2, DERBY, EXASOL, FIREBIRD, H2, HANA, HSQLDB, IGNITE, 
-- INFORMIX, INGRES, MARIADB, MEMSQL, MYSQL, ORACLE, POSTGRES, REDSHIFT, SNOWFLAKE, SQLDATAWAREHOUSE, SQLSERVER, SYBASE, 
-- TERADATA, VERTICA
sign(3)

-- SQLITE
CASE WHEN 3 > 0 THEN 1 WHEN 3 < 0 THEN -1 WHEN 3 = 0 THEN 0 END

(These are currently generated with jOOQ 3.15, see #10141)

The jOOQ User Manual : SQL building : Column expressions : Numeric functions : SIGN

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