Bug #80384 Can not use insert into select * for table with generated column

Submitted: 16 Feb 2016 7:31 Modified: 16 Feb 2016 11:12
Reporter: Shahriyar Rzayev Email Updates:
Status: Duplicate Impact on me:
None 
Category:MySQL Server: DML Severity:S1 (Critical)
Version:5.7.11 OS:CentOS (7)
Assigned to: CPU Architecture:Any

[16 Feb 2016 7:31] Shahriyar Rzayev
Description:
Here is sample table:

CREATE TABLE `sbtest1` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `k` int(10) unsigned NOT NULL DEFAULT '0',
  `c` char(120) NOT NULL DEFAULT '',
  `pad` char(60) NOT NULL DEFAULT '',
  `pad_c` int(11) GENERATED ALWAYS AS ((char_length(`pad`) + char_length(`c`))) STORED,
  PRIMARY KEY (`id`),
  KEY `k_1` (`k`)
) /*!50100 TABLESPACE `innodb_file_per_table` */ ENGINE=InnoDB AUTO_INCREMENT=1731923 DEFAULT CHARSET=latin1 COMPRESSION='none' ENCRYPTION='N'

mysql> create table sbtest2 like sbtest1;
Query OK, 0 rows affected (0,03 sec)

CREATE TABLE `sbtest2` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `k` int(10) unsigned NOT NULL DEFAULT '0',
  `c` char(120) NOT NULL DEFAULT '',
  `pad` char(60) NOT NULL DEFAULT '',
  `pad_c` int(11) GENERATED ALWAYS AS ((char_length(`pad`) + char_length(`c`))) STORED,
  PRIMARY KEY (`id`),
  KEY `k_1` (`k`)
) /*!50100 TABLESPACE `innodb_file_per_table` */ ENGINE=InnoDB DEFAULT CHARSET=latin1 COMPRESSION='none' ENCRYPTION='N'

mysql> insert into sbtest2 select * from sbtest1;
ERROR 3105 (HY000): The value specified for generated column 'pad_c' in table 'sbtest2' is not allowed.

I saw same error in -> https://bugs.mysql.com/bug.php?id=78082

How to repeat:
See description

Suggested fix:
The one option is to list all columns and exclude generated:

mysql> insert into sbtest2(`id`, `k`, `c`, `pad`) select `id`, `k`, `c`, `pad` from sbtest1;
Query OK, 1731922 rows affected (22,18 sec)
Records: 1731922  Duplicates: 0  Warnings: 0

But it is seems to be troublesome.
[16 Feb 2016 11:12] MySQL Verification Team
Hello Shahriyar,

Thank you for the report.
This is duplicate of Bug #80293, please see Bug #80293 and workaround explained by Roy.

Thanks,
Umesh

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