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MDEV-16294: INSTALL PLUGIN IF NOT EXISTS / UNINSTALL PLUGIN IF EXISTS

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Add INSTALL SONAME IF NOT EXISTS; syntax only, installing
duplicate SONAMES doesn't currently cause any errors or warnings.

UNINSTALL SONAME IF EXISTS was added.

Allow the installation / uninstallation of plugins without
doing checks for existence first.
This commit is contained in:
Daniel Black
2018-05-18 12:59:32 +10:00
committed by Sergei Golubchik
parent 4272eec050
commit bb85d92d6f
4 changed files with 93 additions and 17 deletions
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31
mysql-test/main/plugin.result
View File

@ -331,3 +331,34 @@ UNINSTALL PLUGIN example;
RENAME TABLE t1 TO t2;
ERROR 42S02: Table 'test.t1' doesn't exist
DROP TABLE t1;
#
# INSTALL IF NOT EXISTS [PLUGIN name] SONAME library /
# UNINSTALL IF EXISTS PLUGIN|SONAME name
#
#
select plugin_name from information_schema.plugins where plugin_library like 'ha_example%';
plugin_name
INSTALL PLUGIN IF NOT EXISTS example SONAME 'ha_example';
select plugin_name from information_schema.plugins where plugin_library like 'ha_example%';
plugin_name
EXAMPLE
INSTALL PLUGIN IF NOT EXISTS EXAMPLE SONAME 'ha_example';
SHOW WARNINGS;
Level Code Message
Note 1968 Plugin 'EXAMPLE' already installed
INSTALL SONAME IF NOT EXISTS 'ha_example';
SHOW WARNINGS;
Level Code Message
Note 1968 Plugin 'EXAMPLE' already installed
UNINSTALL PLUGIN IF EXISTS example;
select plugin_name from information_schema.plugins where plugin_library like 'ha_example%';
plugin_name
UNUSABLE
UNINSTALL SONAME IF EXISTS 'ha_example';
Warnings:
Note 1305 PLUGIN EXAMPLE does not exist
SHOW WARNINGS;
Level Code Message
Note 1305 PLUGIN EXAMPLE does not exist
select plugin_name from information_schema.plugins where plugin_library like 'ha_example%';
plugin_name