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MDEV-28152 Features for sequences

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- Add `as <int_type>` to sequence creation options
  - int_type can be signed or unsigned integer types, including
    tinyint, smallint, mediumint, int and bigint
  - Limitation: when alter sequence as <new_int_type>, cannot have any
    other alter options in the same statement
  - Limitation: increment remains signed longlong, and the hidden
    constraint (cache_size x abs(increment) < longlong_max) stays for
    unsigned types. This means for bigint unsigned, neither
    abs(increment) nor (cache_size x abs(increment)) can be between
    longlong_max and ulonglong_max
- Truncating maxvalue and minvalue from user input to the nearest max
  or min value of the type, plus or minus 1. When the truncation
  happens, a warning is emitted
- Information schema table for sequences
This commit is contained in:
Yuchen Pei
2024-01-04 12:12:50 +11:00
parent eeba940311
commit 374783c3d9
34 changed files with 3472 additions and 264 deletions
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22
mysql-test/suite/sql_sequence/auto_increment.test
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@ -25,8 +25,28 @@ select nextval(s);
flush tables;
select nextval(s);
drop sequence s;
--enable_ps2_protocol
# Clean up
set global auto_increment_increment= default, auto_increment_offset= default;
--echo #
--echo # MDEV-28152 Features for sequence
--echo #
# These overflows of signed long long are ok because we are using them
# to represent unsigned long long:
call mtr.add_suppression("signed integer overflow: 42 \\+ 9223372036854775800 cannot be represented in type 'long long int'");
call mtr.add_suppression("signed integer overflow: 9223372036854775800 \\+ 100000 cannot be represented in type 'long long int'");
set global auto_increment_increment= 100;
set global auto_increment_offset= 42;
create sequence s as bigint unsigned start with 9223372036854775800 increment 0;
select next value for s;
select next value for s;
drop sequence s;
set global auto_increment_increment= default, auto_increment_offset= default;
--enable_ps2_protocol
--echo #
--echo # End of 11.4 tests
--echo #