The Ultimate Guide to High Availability with MariaDB

PREVIOUS VALUE FOR sequence_name

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MariaDB starting with 10.3

SEQUENCEs are being introduced in MariaDB 10.3.

Syntax

PREVIOUS VALUE FOR sequence_name

or

LASTVAL(sequence_name)

or in Oracle mode (SQL_MODE=ORACLE)

sequence_name.currval

PREVIOUS VALUE FOR is IBM DB2 syntax while LASTVAL() is PostgreSQL syntax.

Description

Get last value generated from a sequence.

Notes

  • If the sequence has not yet been used by the connection, PREVIOUS VALUE FOR returns NULL
  • If a SEQUENCE has been dropped and re-created then it's treated as a new SEQUENCE and PREVIOUS VALUE FOR will return NULL.
  • FLUSH TABLES has not affect on PREVIOUS VALUE FOR.
  • Previous values for all used sequences are stored per connection until connection ends.

See also

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