COLUMN_DELETE()

Overview

Removes the specified dynamic column.

See also: Functions in 10.6 ES, in 10.6 CS, in 10.5 ES, in 10.5 CS, in 10.4 ES, in 10.4 CS, in 10.3 ES, in 10.3 CS, in 10.2 ES, and in 10.2 CS

EXAMPLES

CREATE TABLE t1 (b TINYBLOB);

INSERT INTO t1 VALUES (COLUMN_CREATE('Column1','val1'));

INSERT INTO t1 VALUES (COLUMN_CREATE('Column2','val2'));

SELECT COLUMN_JSON(b) FROM t1;

+--------------------+
| COLUMN_JSON(b)     |
+--------------------+
| {"Column1":"val1"} |
| {"Column2":"val2"} |
+--------------------+

UPDATE t1 SET b = COLUMN_DELETE(b,'Column2');

SELECT COLUMN_JSON(b) FROM t1;

+--------------------+
| COLUMN_JSON(b)     |
+--------------------+
| {"Column1":"val1"} |
| {}                 |
+--------------------+

CHANGE HISTORY

Release Series

History

10.6 Enterprise

  • Present starting in MariaDB Enterprise Server 10.6.4-1.

10.6 Community

  • Present starting in MariaDB Community Server 10.6.0.

10.5 Enterprise

  • Present starting in MariaDB Enterprise Server 10.5.3-1.

10.5 Community

  • Present starting in MariaDB Community Server 10.5.0.

10.4 Enterprise

  • Present starting in MariaDB Enterprise Server 10.4.6-1.

10.4 Community

  • Present starting in MariaDB Community Server 10.4.0.

10.3 Enterprise

  • Present starting in MariaDB Enterprise Server 10.3.16-1.

10.3 Community

  • Present starting in MariaDB Community Server 10.3.0.

10.2 Enterprise

  • Present starting in MariaDB Enterprise Server 10.2.25-1.

10.2 Community

  • Present starting in MariaDB Community Server 10.2.0.

EXTERNAL REFERENCES