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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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3
mysql-test/main/mysqld--help.result
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@ -721,7 +721,8 @@ The following specify which files/extra groups are read (specified before remain
MySQL versions. Any combination of:
NO_DUP_KEY_WARNINGS_WITH_IGNORE, NO_PROGRESS_INFO,
ZERO_DATE_TIME_CAST, UTF8_IS_UTF8MB3,
IGNORE_INDEX_ONLY_FOR_JOIN, COMPAT_5_1_CHECKSUM
IGNORE_INDEX_ONLY_FOR_JOIN, COMPAT_5_1_CHECKSUM,
NO_NULL_COLLATION_IDS
Use 'ALL' to set all combinations.
--old-passwords Use old password encryption method (needed for 4.0 and
older clients)