query_alloc_block_size, query_prealloc_size, range_alloc_block_size,transaction_alloc_block_size and transaction_prealloc_size
Add more checks for "out of memory" detection in range optimization
Current table is placed into read_tables set of the current join_tab->select
so get_mm_parts function thinks that current table's record is read and
tries to calculate WHERE condition with the fields of the record.
Result of these calculations is unpredictable.
Looks funny - outcome of the SELECT depends on the queries executed before.
Anyway i think we should have testcase on this part of the code.
Query should actually return empty result set, but currently can't, as
it attempts to store NULL in NOT NULL field, because that is a match
made by self join conditions.
This crash happens in rather exotic case when we try to run
SELECT DISTINCT some_func(SUM(some_field)) GROUP BY another_field;
on a table with single row.
Optimizer marks this table as const, sets group=NULL (with remove_const)
thus, create_tmp_table makes mistake collecting columns for temporary table
and then crashes because the field_count gets less than hidden_columns_count.
Use 0x.... as strings if 'new' mode. (bug 152)
Don't report -max on windows when InnoDB is enabled. (bug 332)
Reset current_linfo; This could cause a hang when doing PURGE LOGS.
Fix for row numbers in EXPLAIN (bug 322)
Fix that USE_FRM works for all table types (bug 97)
Fix for LEFT/RIGHT/MID with multi-byte-character sets (bug 314)
Fix for new bison 1.875
max_insert_delayed_threads and delayed_insert_timeout now works as documented (bug 211)
Don't show port in SHOW PROCESSLIST for system threads
Fix problem with ORDER BY being discarded for some DISTINCT queries (bug 275)
Fixed bug with NATURAL LEFT JOIN, NATURAL RIGHT JOIN and RIGHT JOIN when
using many joined tables (Bug 212)
Added ALL as parameter option for all group functions.
Make join handling uniform. This allows us to use ',', JOIN and INNER JOIN the same way.
Sort NULL last if DESC is used (ANSI SQL 99 requirement)
MIN(key_column) could in some cases return NULL on a column with NULL and other values.
MIN(key_column) and MAX(key_column) could in some cases return wrong values when used in OUTER JOIN.
