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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:

ASE, Access, Aurora MySQL, Aurora Postgres, BigQuery, CockroachDB, DB2, DuckDB, Exasol, Firebird, H2, HSQLDB, Hana, Informix, MariaDB, MemSQL, MySQL, Postgres, Redshift, SQLDataWarehouse, SQLServer, Snowflake, Sybase, Teradata, Vertica, YugabyteDB

left('hello world', 5)

Derby, Oracle, SQLite

substr('hello world', 1, 5)

Trino

substring('hello world', 1, 5)

(These are currently generated with jOOQ 3.20, see #10141), or translate your own on our website

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