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MDEV-35641 bring call to use_all_columns() forward when reading from mysql.servers

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TABLE::use_all_columns turn on all bits of read_set, which is
interpreted by innodb as a request to read all columns. Without doing
so before calling init_read_record(), innodb will not retrieve any
columns if mysql.servers table has been altered to use innodb as the
engine, and any foreign servers stored in the table are "lost".
This commit is contained in:
Yuchen Pei
2024-12-16 10:26:21 +11:00
parent 04408fff40
commit f862fe8b2b
3 changed files with 19 additions and 3 deletions
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7
mysql-test/main/servers.result
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@@ -43,3 +43,10 @@ ERROR HY000: Can't read record in system table
drop table mysql.servers;
rename table mysql.servers_save to mysql.servers;
drop server s1;
#
# MDEV-35641 foreign server "disappears" after ALTERing the servers system table to use innodb and FLUSH PRIVILEGES
#
CREATE SERVER s1 FOREIGN DATA WRAPPER mysql OPTIONS (HOST '127.0.0.1');
ALTER TABLE mysql.servers ENGINE=innodb;
FLUSH PRIVILEGES;
drop server s1;