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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, DB2, DUCKDB, EXASOL, FIREBIRD, H2, HANA, HSQLDB,
-- INFORMIX, MARIADB, MEMSQL, MYSQL, POSTGRES, REDSHIFT, SNOWFLAKE, SQLDATAWAREHOUSE, SQLSERVER, 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 3.19, see #10141), or translate your own on our website
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