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MDEV-10139 Support for SEQUENCE objects

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- SETVAL(sequence_name, next_value, is_used, round)
- ALTER SEQUENCE, including RESTART WITH

Other things:
- Added handler::extra() option HA_EXTRA_PREPARE_FOR_ALTER_TABLE to signal
  ha_sequence() that it should allow write_row statments.
- ALTER ONLINE TABLE now works with SEQUENCE:s
This commit is contained in:
Monty
2017-05-08 02:44:55 +03:00
parent 1e04ad284c
commit 71fa413c16
31 changed files with 1399 additions and 85 deletions
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10
mysql-test/suite/sql_sequence/next.result
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@ -390,6 +390,16 @@ next_value min_value max_value start increment cache cycle round
select next value for s1;
next value for s1
3984356
explain extended select next value for s1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select nextval(`test`.`s1`) AS `next value for s1`
explain extended select previous value for s1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select lastval(`test`.`s1`) AS `previous value for s1`
drop sequence s1;
create table t1 (a int);
select next value for t1;