unknown f18a10c6c1
Fix for bug #27643 "query failed : 1114 (The table '' is full) ...
Problem:
HASH indexes on VARCHAR columns with binary collations did not ignore trailing spaces from strings before comparisons. This could result in duplicate records being successfully inserted into a MEMORY table with unique key constraints.
As a direct consequence of the above, internal MEMORY tables used for GROUP BY calculation in testcases for bug #27643 contained duplicate rows which resulted in duplicate key errors when converting those temporary tables to MyISAM. Additionally, that error was incorrectly converted to the 'table is full' error.
Solution:
- ignore trailing spaces in VARCHAR fields with binary collations when calculating hashes.
- return a proper error from create_myisam_from_heap() when conversion fails.
mysql-test/r/ctype_ucs2_def.result:
Added a testcase for bug #27643 .
mysql-test/r/heap_hash.result:
Added a testcase for bug #27643 .
mysql-test/t/ctype_ucs2_def.test:
Added a testcase for bug #27643 .
mysql-test/t/heap_hash.test:
Added a testcase for bug #27643 .
sql/sql_select.cc:
Return an appropriate error instead of 'table is full' when conversion from MEMORY to MyISAM fails.
strings/ctype-bin.c:
Added my_hash_sort_8bit_bin() which ignores trailing spaces when calculating hashes, and is now used for VARCHAR columns instead of my_hash_sort_bin().
strings/ctype-mb.c:
Ignore trailing spaces when calculating a string hash in my_hash_sort_mb_bin().
strings/ctype-ucs2.c:
Ignore trailing spaces when calculating a string hash in my_hash_sort_ucs2_bin().
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