CONCAT_WS
Supported by ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
The CONCAT_WS() function (where WS = "with separator") concatenates several strings and interleaves a separator:
SELECT concat_ws(',', 'a', 'b', 'c');
create.select(concat(",", "a", "b", "c")).fetch();
The result being
+-----------+ | concat_ws | +-----------+ | a,b,c | +-----------+
Dialect support
This example using jOOQ:
concatWs(",", "a", "b")
Translates to the following dialect specific expressions:
Aurora MySQL, Aurora Postgres, ClickHouse, CockroachDB, Databricks, DuckDB, Exasol, H2, HSQLDB, MariaDB, MemSQL, MySQL, Postgres, SQLDataWarehouse, SQLServer, SQLite, Snowflake, Trino, YugabyteDB
concat_ws(',', 'a', 'b')
BigQuery, Redshift, Spanner
CASE
WHEN ',' = '' THEN (CASE
WHEN 'a' IS NULL THEN ''
ELSE (',' || 'a')
END || CASE
WHEN 'b' IS NULL THEN ''
ELSE (',' || 'b')
END)
WHEN ',' IS NOT NULL THEN ltrim(
(CASE
WHEN 'a' IS NULL THEN ''
ELSE (',' || 'a')
END || CASE
WHEN 'b' IS NULL THEN ''
ELSE (',' || 'b')
END),
','
)
END
DB2, Firebird, Hana, Informix, Teradata, Vertica
CASE
WHEN ',' = '' THEN (CASE
WHEN 'a' IS NULL THEN ''
ELSE (',' || 'a')
END || CASE
WHEN 'b' IS NULL THEN ''
ELSE (',' || 'b')
END)
WHEN ',' IS NOT NULL THEN trim(LEADING ',' FROM (CASE
WHEN 'a' IS NULL THEN ''
ELSE (',' || 'a')
END || CASE
WHEN 'b' IS NULL THEN ''
ELSE (',' || 'b')
END))
END
Oracle
CASE
WHEN ',' IS NULL THEN (CASE
WHEN 'a' IS NULL THEN ''
ELSE (',' || 'a')
END || CASE
WHEN 'b' IS NULL THEN ''
ELSE (',' || 'b')
END)
ELSE trim(LEADING ',' FROM (CASE
WHEN 'a' IS NULL THEN ''
ELSE (',' || 'a')
END || CASE
WHEN 'b' IS NULL THEN ''
ELSE (',' || 'b')
END))
END
ASE, Access, Sybase
/* UNSUPPORTED */
Generated with jOOQ 3.22. Support in older jOOQ versions may differ. Translate your own SQL on our website
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