New versions: Dev (3.15) | Latest (3.14) | 3.13 | 3.12 | 3.11 | 3.10 | 3.9 | 3.8 | Old versions: 3.7 | 3.6 | 3.5 | 3.4 | 3.3

LEFT

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

The LEFT() function calculates the substring of a given string starting from the left end. See also SUBSTRING, RIGHT

SELECT left('hello world', 5);
create.select(left("hello world", 5)).fetch();

The result being

+-------+
| left  |
+-------+
| hello |
+-------+

Dialect support

This example using jOOQ:

left("hello world", 5)

Translates to the following dialect specific expressions:

-- ACCESS, ASE, AURORA_MYSQL, AURORA_POSTGRES, COCKROACHDB, CUBRID, DB2, FIREBIRD, H2, HANA, HSQLDB, INFORMIX, INGRES, 
-- MARIADB, MEMSQL, MYSQL, POSTGRES, REDSHIFT, SQLDATAWAREHOUSE, SQLSERVER, SYBASE, TERADATA, VERTICA
left('hello world', 5)

-- DERBY, ORACLE, SQLITE
substr('hello world', 1, 5)

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

The jOOQ Logo