_rowid

You are viewing an old version of this article. View the current version here.

Syntax

_rowid

Description

The _rowid pseudo column is mapped to the primary key in the related table. This can be used as a replacement of the rowid pseudo column in other databases. Another usage is to simplify sql queries as one doesn't have to know the name of the primary key.

Examples

create table t1 (a int primary key, b varchar(80));
insert into t1 values (1,"one"),(2,"two");
select * from t1 where _rowid=1;
+---+------+
| a | b    |
+---+------+
| 1 | one  |
+---+------+
update t1 set b="three" where _rowid=2;
select * from t1 where _rowid>=1 and _rowid<=10;
+---+-------+
| a | b     |
+---+-------+
| 1 | one   |
| 2 | three |
+---+-------+

Comments

Comments loading...
Content reproduced on this site is the property of its respective owners, and this content is not reviewed in advance by MariaDB. The views, information and opinions expressed by this content do not necessarily represent those of MariaDB or any other party.