thd->allow_sum_func was left 'true' after previous statement thus allowing
sum funcs to be present in conditions.
thd->allow_sum_func should be set to 0 for each query and each prepared
statement reinitialization. This is done in lex_start() and
reset_stmt_for_execute().
For queries with GROUP BY and without hidden GROUP BY fields DISTINCT is
optimized away becuase such queries produce result set without duplicates.
But ROLLUP can add rows which may be same to some rows and this fact was
ignored.
Added check so if ROLLUP is present DISTINCT can't be optimized away.
Solution for 4.0 and 4.1.
If the caller cannot re-open table(s), it gives a NULL
'refresh' argument to open_table(). We used to ignore
flushes then. Now we ignore drops too.
produce warning for 'create database if not exists' if database exists
do not update database options in this case
produce warning for 'create table if not exists' if table exists
This fix is cancellation of ChangeSet
1.2329 05/07/12 08:35:30 reggie@linux.site +8 -0
Bug 7142 Show Fields from fails using Borland's dbExpress interface
The reason is we can't fix bug#7142 without
breaking of existing applications/APIs that worked fine with earlier 4.1
bug 7142 is fixed in 5.0
gzdopen() because the file itself was only opened for writing (and truncated),
and some libc implementations (like SCO) don't like to do a fdopen(..., "a") on
a fd that was not opened using O_APPEND.
Fixed bug #12885.
Forced inheritence of the maybe_null flag for the expressions
containing GROUP BY attributes in selects with ROLLUP.
olap.test, olap.result:
Added test case for bug #12885.
Added test cases for bug #12863.
item_sum.cc, item_sum.h:
Fixed bug #12863.
Added a flag to Item_func_group_concat set to FALSE after
concatenation of the first element of a group.
Fixed bugs #12101, #12102: wrong calculation of not_null_tables()
for some expressions.
The classes Item_func_between, Item_func_if, Item_func_in are modified.
Item_func_between/in objects can represent now [NOT]BETWEEN/IN expressions.
The class Item_func_opt_neg is added to factor out the functionality
common for the modified classes Item_func_between and Item_func_in.
item_cmpfunc.cc:
Fixed bugs #12101, #12102: wrong calculation of not_null_tables()
for some expressions.
Added Item_func_between::fix_fields(), Item_func_if::fix_fields(),
Item_func_in::fix_fields(). They correct generic calculation of
the not_null_tables attribute when it is needed.
Modified Item_func_between::val_int(), Item_func_in::val_int().
opt_range.cc:
Fixed bugs #12101, #12102: wrong calculation of not_null_tables()
for some expressions.
The function get_mm_tree() is modified. There cannot be NOT before
BETWEEN/IN anymore. Rather Item_func_between/in objects can represent
now [NOT]BETWEEN/IN expressions.
sql_yacc.yy:
Fixed bugs #12101, #12102: wrong calculation of not_null_tables()
for some expressions.
Item_func_between/in objects can represent now [NOT]BETWEEN/IN expresions.
join_outer.result:
Fixed some testcases results (bugs #12101, #12102)
join_outer.test:
Added testcases for bugs #12101, #12102
adding test case.
item_cmpfunc.cc:
Bug#12611
ESCAPE + LIKE do not work when the escape char is a multibyte one
Additional fix for 8bit character sets:
escape character must be converted into
operation character set.
Bug 12611 : ESCAPE + LIKE do not work when the escape char is a multibyte one
Forgot to commit this file in the previous changeset,
together with other files.
