Syntax modified to allow statements:
ALTER TABLE ADD/DROP COLUMN
ALTER TABLE ADD/DROP INDEX
ALTER TABLE ADD/DROP FOREIGN KEY
ALTER TABLE ADD/DROP PARTITION
ALTER TABLE CHANGE COLUMN
ALTER TABLE MODIFY COLUMN
DROP INDEX
to have IF (NOT) EXISTS options.
Appropriate implementations added to mysql_alter_table().
per-file comments:
mysql-test/r/alter_table.result
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
test result updated.
mysql-test/r/fulltext.result
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
mysql-test/r/partition.result
test result updated.
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
mysql-test/t/alter_table.test
tests added.
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
mysql-test/t/fulltext.test
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
tests added.
mysql-test/t/partition.test
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
tests added.
sql/field.cc
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
create_if_not_exists field added.
sql/field.h
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
create_if_not_exists field added.
sql/partition_info.h
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
has_unique_name made public.
sql/sp_head.cc
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
sql/sql_class.cc
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
create_if_not_exists inited.
sql/sql_class.h
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
create_if_not_exists inited.
sql/sql_lex.cc
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
check_exists inited.
sql/sql_lex.h
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
check_exists inited.
sql/sql_parse.cc
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
check_exists inited.
sql/sql_table.cc
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
handle_if_exists_options() added.
it's called in mysql_alter_table().
sql/sql_trigger.cc
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
check_exists instead of drop_if_exists.
sql/sql_view.cc
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
check_exists instead of drop_if_exists.
sql/sql_yacc.yy
MDEV-318 IF (NOT) EXIST clauses for ALTER TABLE (MWL #252).
sintax modified.
sub-tables are accessed via the MySQL API like the MYSQL CONNECT tables.
modified:
mysql-test/suite/connect/r/tbl.result
mysql-test/suite/connect/t/tbl.test
storage/connect/catalog.h
storage/connect/ha_connect.cc
storage/connect/mycat.cc
storage/connect/mycat.h
storage/connect/tabmysql.h
storage/connect/tabtbl.cpp
The patch contributed by Konstantin Osipov applied.
Native comments:
Implement multiple user-level locks per connection.
GET_LOCK() function in MySQL allows a connection to hold at most
one user level lock. Taking a new lock automatically releases the
old lock, if any.
The limit of one lock per session existed since early versions
of MySQL didn't have a deadlock detector for SQL locks.
MDL patches in MySQL 5.5 added a deadlock detector,
so starting from 5.5 it became possible to take multiple locks
in any order -- a deadlock, should it occur, would be detected
and an error returned to the client which closed the wait chain.
This is exactly what is done in this patch: ULLs are moved
to use MDL subsystem.
This fixes that by default LOAD DATA INFILE will not generate the error:
"Multi-statement transaction required more than 'max_binlog_cache_size' bytes of storage..."
mysql-test/suite/sys_vars/r/max_binlog_cache_size_basic.result:
Updated test case
mysql-test/suite/sys_vars/r/max_binlog_stmt_cache_size_basic.result:
Updated test case
sql/sys_vars.cc:
Increase default value of max_binlog_cache_size and max_binlog_stmt_cache_size to ulonglong_max.
WITH A PORT NUMBER ENCLOSED IN QUOTES
Problem: mysqldump --dump-slave --include-master-host-port
prints the CHANGE MASTER command in the generated logical
backup. The PORT number that is generated with this command
is a string and should be an integer.
Fix: Remove the Enclosed quotes for port number.
mysql-test/r/mysqld--help.result:
that's default to number of CPUs
mysql-test/suite/archive/discover.test:
move_file uses rename(2), which may end up
with "Invalid cross-device link"
mysql-test/suite/archive/partition_archive.test:
on Solaris the error message is different
Change Item_func_get_system_var::val_xxx functions to use that.
mysql-test/t/variables.test:
@@GLOBAL.INIT_CONNECT is never NULL anymore. Nor it ever was.
It was a bug that empty string system variables appeared as NULL
in the *integer context* (but not in a string, real, or decimal context!)
* persistent table versions in the extra2
* ha_archive::frm_compare using TABLE_SHARE::tabledef_version
* distinguish between "important" and "optional" extra2 frm values
* write engine-defined attributes (aka "table options") to extra2, not to extra,
but still read from the old location, if they're found there.
* comments
* cosmetic changes, *(ptr+5) -> ptr[5]
* a couple of trivial functions -> inline
* remove unused argument from pack_header()
* create_frm() no longer creates frm file (the function used to prepare and
fill a memory buffer and call my_create at the end. Now it only prepares
a memory buffer). Renamed accordingly.
* don't call pack_screen twice, go for a smaller screen area in the first attempt
* remove useless calls to check_duplicate_warning()
* don't write unireg screens to .frm files
* remove make_new_entry(), it's basically dead code, always calculating
and writing into frm the same string value. replace the function call
with the constant string.
"
revision-id: sanja@askmonty.org-20110511110948-4kdevwzomvk56y1w
committer: sanja@askmonty.org
branch nick: work-maria-5.1-CREATE-merge
timestamp: Wed 2011-05-11 14:09:48 +0300
Bugfix: New table creation/renaming block added if old encoded table present
"
the old behavior was less inconsistent than the new one.
In the new one the error message was sometimes different (under LOCK TABLES e.g.),
and there were race conditions (if this CREATE happened when a concurrent ALTER
has renamed the old table away but haven't put the new table in place)
The old one was like "(when using old table names) for DML #mysql50# prefix
is optional, for DDL it's required".
* print "table doesn't exist in engine" when a table doesn't exist in the engine,
instead of "file not found" (if no file was involved)
* print a complete filename that cannot be found ('t1.MYI', not 't1')
* it's not an error for a DROP if a table doesn't exist in the engine (or some table
files cannot be found) - if the DROP succeeded regardless
after all engines have discovered their tables
side effect: correct alphabetical sorting as in ORDER BY ... COLLATE utf8_bin,
information_schema is no longer the first after find_files(),
tables like #mysql50#zzz are sorted first (as per table name),
not last (as per file name zzz).
When calculating the selectivity of a range in the function
get_column_range_cardinality a check whether NULL values are
included into into the range must be done.
The function was adjusted to be able to aggregate
the counters of the merged elements.
Before this change it was not possible to guarantee the correctness
of the counters passed to the the call-back parameter walk_action.
As a result, when some elements of a Unique object were flushed into
disk the function passed to merge_walk() as the call-back parameter
could return wrong counters of elements. This could lead to building
wrong histograms.
fulltext search was initialized for all MATCH ... AGAINST items
at the end of the JOIN::optimize(). But since 5.3 derived tables
are initialized lazily on first use, very late in the sub_select().
Skip Item_func_match::init_search initialization if the corresponding
table isn't open yet; repeat fulltext initialization for all
not-yet-initialized MATCH ... AGAINST items after creating derived tables.
Don't try to a histogram if it is not read into the cache for statistical data.
It may happen so if optimizer_use_condition_selectivity is set to 3. This
setting orders the optimizer not use histograms to calculate selectivity.
