executor: fix show create table for partitioned table

[tiancaiamao]

What problem does this PR solve?

Show create table result:

CREATE TABLE `log` (
  `LOG_ID` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `ROUND_ID` bigint(20) unsigned NOT NULL,
  `USER_ID` int(10) unsigned NOT NULL,
  `USER_IP` int(10) unsigned DEFAULT NULL,
  `END_TIME` datetime NOT NULL,
  `USER_TYPE` int(11) DEFAULT NULL,
  `APP_ID` int(11) DEFAULT NULL,
  PRIMARY KEY (`LOG_ID`,`END_TIME`),
  KEY `IDX_EndTime` (`END_TIME`),
  KEY `IDX_RoundId` (`ROUND_ID`),
  KEY `IDX_UserId_EndTime` (`USER_ID`,`END_TIME`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin
PARTITION BY RANGE ( month(`end_time`) ) (
  PARTITION p1 VALUES LESS THAN (2),
  PARTITION p2 VALUES LESS THAN (3),
  PARTITION p3 VALUES LESS THAN (4),
  PARTITION p4 VALUES LESS THAN (5),
  PARTITION p5 VALUES LESS THAN (6),
  PARTITION p6 VALUES LESS THAN (7),
  PARTITION p7 VALUES LESS THAN (8),
  PARTITION p8 VALUES LESS THAN (9),
  PARTITION p9 VALUES LESS THAN (10),
  PARTITION p10 VALUES LESS THAN (11),
  PARTITION p11 VALUES LESS THAN (12),
  PARTITION p12 VALUES LESS THAN (MAXVALUE)
) AUTO_INCREMENT=505488

AUTO_INCREMENT=505488 should not be after PARTITION definitions.
If there is a COMMENT=xxx, it would meet the same problem as AUTO_INCREMENT=xxx.

What is changed and how it works?

Fix the order, let the PARTITION definitions come last

Check List

Tests

• Unit test

Related changes

• Need to cherry-pick to the release branch

[codecov]

Codecov Report

Merging #10682 into master will increase coverage by 0.0018%.
The diff coverage is 100%.

@@               Coverage Diff                @@
##             master     #10682        +/-   ##
================================================
+ Coverage   78.3419%   78.3437%   +0.0018%     
================================================
  Files           414        414                
  Lines         87704      87656        -48     
================================================
- Hits          68709      68673        -36     
+ Misses        13852      13845         -7     
+ Partials       5143       5138         -5

[tiancaiamao]

/run-all-tests

[tiancaiamao]

PTAL @lysu @jackysp

[zimulala]

LGTM

[shenli]

The description is not clear. You not only handle the AUTO_INCREMENT part, but also the COMMENT part.

[tiancaiamao]

@shenli Updated

[winkyao]

LGTM