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MDEV-31608 - Connector/NET fails to connect since 10.10

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Connector/NET does not expect collation IDs returned by "show collations"
to be NULL, runs into an exception.

The fix is to determine connector/net using its connection attributes,
then make sure "show collations" does not output NULL IDs.

The patch introduces new old_mode NO_NULL_COLLATION_IDs, that is
automatically set, once MySQL Connector/NET connection is determined.

A test was added, that uses MySql.Data from powershell - only works
if MySql.Data is installed into GAC (i.e with C/NET MSI package)
This commit is contained in:
Vladislav Vaintroub
2023-10-06 22:36:32 +02:00
parent 6d0bcfc4b9
commit 9d07b0520c
15 changed files with 148 additions and 20 deletions
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8
mysql-test/main/old-mode.test
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@ -169,3 +169,11 @@ DROP TABLE t1;
SET @@time_zone=DEFAULT;
SET TIMESTAMP=DEFAULT;
--echo #
--echo # MDEV-31608 - Connector/NET fails to connect since 10.10
--echo #
select count(*) > 0 from information_schema.collations where id IS NULL;
SET old_mode=no_null_collation_ids;
select count(*) > 0 from information_schema.collations where id IS NULL;