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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, BIGQUERY, COCKROACHDB, CUBRID, DB2, EXASOL, FIREBIRD, H2, HANA, HSQLDB, IGNITE, 
-- INFORMIX, INGRES, MARIADB, MEMSQL, MYSQL, POSTGRES, REDSHIFT, SNOWFLAKE, SQLDATAWAREHOUSE, SQLSERVER, SYBASE, TERADATA, 
-- VERTICA
left('hello world', 5)

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

(These are currently generated with jOOQ 3.16, see #10141), or translate your own on our website

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