RENAME TABLE table_name TO new_table_name ; Faster Alloc (aa358092) · Commits · Software / OSDI20 Artifacts / mariadb

Docs/manual.texi

+91 −22

Original line number	Diff line number	Diff line
		@@ -275,7 +275,7 @@ Is there anything special to do when upgrading/downgrading MySQL?
		How standards-compatible is MySQL?

		* Extensions to ANSI:: @strong{MySQL} extensions to ANSI SQL92
		* Ansi mode:: Running @strong{MySQL} in ANSI mode
		* Ansi mode:: Runnning @strong{MySQL} in ANSI mode
		* Differences from ANSI:: @strong{MySQL} differences compared to ANSI SQL92
		* Missing functions:: Functionality missing from @strong{MySQL}
		* Standards:: What standards does @strong{MySQL} follow?
		@@ -323,6 +323,7 @@ MySQL language reference
		* DROP DATABASE:: @code{DROP DATABASE} syntax
		* CREATE TABLE:: @code{CREATE TABLE} syntax
		* ALTER TABLE:: @code{ALTER TABLE} syntax
		* RENAME TABLE::
		* DROP TABLE:: @code{DROP TABLE} syntax
		* OPTIMIZE TABLE:: @code{OPTIMIZE TABLE} syntax
		* CHECK TABLE:: @code{CHECK TABLE} syntax
		@@ -608,7 +609,7 @@ Using @code{MySQL} with some common programs

		Problems and common errors

		* What is crashing:: How to determine what is causing problems
		* What is crashing:: How to determinate what is causing problems
		* Crashing:: What to do if @strong{MySQL} keeps crashing
		* Link errors:: Problems when linking with the @strong{MySQL} client library
		* Common errors:: Some common errors when using @strong{MySQL}
		@@ -720,7 +721,7 @@ C API function descriptions
		* mysql_store_result:: @code{mysql_store_result()}
		* mysql_thread_id:: @code{mysql_thread_id()}
		* mysql_use_result:: @code{mysql_use_result()}
		* NULL mysql_store_result:: Why is it that after @code{mysql_query()} returns success, @code{mysql_store_result()} sometimes returns @code{NULL}?
		* NULL mysql_store_result:: Why is it that after @code{mysql_query()} returns success, @code{mysql_store_result()} sometimes returns @code{NULL?}
		* Query results:: What results can I get from a query?
		* Getting unique ID:: How can I get the unique ID for the last inserted row?
		* C API linking problems:: Problems linking with the C API
		@@ -1826,7 +1827,7 @@ Apart from the following links, you can find and download a lot of
		@strong{MySQL} programs, tools and APIs from the
		@uref{http://www.mysql.com/Contrib/, Contrib directory}.

		@subheading Tutorials and manuals
		@subheading Tutorials and Manuals
		@itemize @bullet

		@c just forwards to the devshed link below.. (jcole)
		@@ -2026,6 +2027,11 @@ reviewing.
		@item
		@uref{http://www.omnis-software.com/products/studio/studio.html, OMNIS}
		OMNIS Studio is a rapid application development (RAD) tool.
		@item
		@uref{http://www.webplus.com, talentsoft Web+ 4.6}
		Web+ is a powerful and comprehensive development language for use in
		creating web-based client/server applications without writing complicated,
		low-level and time-consuming CGI programs.
		@end itemize

		@subheading Database design tools with MySQL support
		@@ -8959,6 +8965,7 @@ comparisons to be done according to the ASCII order used on the
		@strong{MySQL} maps each database to a directory under the @strong{MySQL}
		data directory, and tables within a database to filenames in the database
		directory.

		This has two implications:

		@itemize @minus
		@@ -9015,11 +9022,12 @@ Use of @code{TEMPORARY} or @code{IF NOT EXISTS} with @code{CREATE TABLE}.
		Use of @code{COUNT(DISTINCT list)} where 'list' is more than one element.

		@item
		Use of @code{CHANGE col_name}, @code{DROP col_name} or @code{DROP INDEX}
		in an @code{ALTER TABLE} statement. @xref{ALTER TABLE, , @code{ALTER TABLE}}.
		Use of @code{CHANGE col_name}, @code{DROP col_name} or @code{DROP
		INDEX}, @code{IGNORE} or @code{RENAME} in an @code{ALTER TABLE}
		statement. @xref{ALTER TABLE, , @code{ALTER TABLE}}.

		@item
		Use of @code{IGNORE} in an @code{ALTER TABLE} statement.
		Use of @code{RENAME TABLE}. @xref{RENAME TABLE, , @code{RENAME TABLE}}.

		@item
		Use of multiple @code{ADD}, @code{ALTER}, @code{DROP} or @code{CHANGE}
		@@ -11636,6 +11644,7 @@ to restart @code{mysqld} with @code{--skip-grant-tables} to be able to run
		* DROP DATABASE:: @code{DROP DATABASE} syntax
		* CREATE TABLE:: @code{CREATE TABLE} syntax
		* ALTER TABLE:: @code{ALTER TABLE} syntax
		* RENAME TABLE::
		* DROP TABLE:: @code{DROP TABLE} syntax
		* OPTIMIZE TABLE:: @code{OPTIMIZE TABLE} syntax
		* CHECK TABLE:: @code{CHECK TABLE} syntax
		@@ -15973,15 +15982,16 @@ mysql> select COUNT(*) from student;
		@findex COUNT(DISTINCT)
		@findex DISTINCT
		@item COUNT(DISTINCT expr,[expr...])
		Returns a count of the number of different values.
		Returns a count of the number of different not @code{NULL} values.

		@example
		mysql> select COUNT(DISTINCT results) from student;
		@end example

		In @strong{MySQL} you can get the number of distinct expressions combinations
		by giving a list of expressions. In ANSI SQL you would have to do a
		concatenation of all expressions inside @code{CODE(DISTINCT ..)}.
		In @strong{MySQL} you can get the number of distinct expressions
		combinations that doesn't contain NULL by giving a list of expressions.
		In ANSI SQL you would have to do a concatenation of all expressions
		inside @code{CODE(DISTINCT ..)}.

		@findex AVG()
		@item AVG(expr)
		@@ -16547,7 +16557,7 @@ Certain other column type changes may occur if you compress a table
		using @code{myisampack}. @xref{Compressed format}.

		@findex ALTER TABLE
		@node ALTER TABLE, DROP TABLE, CREATE TABLE, Reference
		@node ALTER TABLE, RENAME TABLE, CREATE TABLE, Reference
		@section @code{ALTER TABLE} syntax

		@example
		@@ -16565,7 +16575,7 @@ alter_specification:
		or DROP [COLUMN] col_name
		or DROP PRIMARY KEY
		or DROP INDEX index_name
		or RENAME [AS] new_tbl_name
		or RENAME [TO] new_tbl_name
		or table_options
		@end example

		@@ -16621,9 +16631,10 @@ INDEX} are @strong{MySQL} extensions to ANSI SQL92.
		The optional word @code{COLUMN} is a pure noise word and can be omitted.

		@item
		If you use @code{ALTER TABLE tbl_name RENAME AS new_name} without any other
		If you use @code{ALTER TABLE tbl_name RENAME TO new_name} without any other
		options, @strong{MySQL} simply renames the files that correspond to the table
		@code{tbl_name}. There is no need to create the temporary table.
		@xref{RENAME TABLE,, @code{RENAME TABLE}}.

		@item
		@code{create_definition} clauses use the same syntax for @code{ADD} and
		@@ -16775,8 +16786,47 @@ sequence number be executing @code{SET INSERT_ID=#} before

		See also @xref{ALTER TABLE problems, , @code{ALTER TABLE} problems}.

		@findex RENAME TABLE
		@node RENAME TABLE, DROP TABLE, ALTER TABLE, Reference
		@section @code{RENAME TABLE} syntax

		@example
		RENAME TABLE tbl_name as new_table_name[, tbl_name2 as new_table_name2,...]
		@end example

		The rename is done atomic, which means that if no other thread can
		access any of the tables while the rename is running. This makes it
		possible to replace a table with an empty one:

		@example
		CREATE TABLE new_table (...);
		RENAME TABLE old_table TO backup_table, new_table as old_table;
		@end example

		The rename is done from left to right, which means that if you want to
		swap two tables names, you have to do:

		@example
		RENAME TABLE old_table TO backup_table, new_table as old_table, backup_table as old_table;
		@end example

		Is long as two databases are on the same disk you can also do a rename
		from a database to another:

		@example
		RENAME TABLE current_database.table_name TO other_database.table_name;
		@end example

		When you execute @code{RENAME}, you can't have any locked tables or active
		transactions. You must also have the @code{ALTER TABLE} privilege on both
		the old and the new table.

		If @strong{MySQL} encounters any errors in a multiple table rename, it
		will do a reverse rename for all renamed tables to get everything back
		to the original state.

		@findex DROP TABLE
		@node DROP TABLE, OPTIMIZE TABLE, ALTER TABLE, Reference
		@node DROP TABLE, OPTIMIZE TABLE, RENAME TABLE, Reference
		@section @code{DROP TABLE} syntax

		@example
		@@ -19172,9 +19222,8 @@ may be a column name or a string containing the SQL @samp{%} and @samp{_}
		wildcard characters.

		If the column types are different than you expect them to be based on a
		@code{CREATE TABLE} statement, note that @strong{MySQL} sometimes changes column
		types.
		@xref{Silent column changes}.
		@code{CREATE TABLE} statement, note that @strong{MySQL} sometimes
		changes column types. @xref{Silent column changes}.

		@cindex Oracle compatibility
		@cindex Compatibility, with Oracle
		@@ -35350,6 +35399,10 @@ and will soon be declared beta, gamma and release.
		@appendixsubsec Changes in release 3.23.23
		@itemize @bullet
		@item
		Added atomic @code{RENAME} command.
		@item
		Don't count entries with @code{NULL} in @code{COUNT(DISTINCT ..)}.
		@item
		Changed @code{ALTER TABLE}, @code{LOAD DATA INFILE} on empty tables and
		@code{INSERT ... SELECT...} on empty tables to create non-unique indexs
		in a separate batch with sorting. This will make the above calls much
		@@ -35372,7 +35425,9 @@ that don't have the @code{pthread_rwlock_rdlock} code.
		When deleting rows with a non-unique key in a HEAP table, all rows weren't
		always deleted.
		@item
		Fixed that BDB tables work on part keys.
		Fixed that @code{SELECT} on part keys works with BDB tables.
		@item
		Fixed that @code{INSERT INTO bdb_table ... SELECT} works with BDB tables.
		@item
		Check table now updates key statistics for the table.
		@item
		@@ -35382,11 +35437,18 @@ will not be marked to be analyzed until they are updated in any way with
		3.23.23 or newer. For older tables, you have to do @code{CHECK TABLE}
		to update the key distribution.
		@item
		Fixed some minor privilege problems with @code{CHECK}, @code{ANALYZE},
		@code{REPAIR} and @code{SHOW CREATE} commands.
		@item
		Added @code{CHANGE MASTER TO} command
		@item
		Added @code{FAST}, @code{QUICK} @code{EXTENDED} check types to
		@code{CHECK TABLES}.
		@item
		Changed @code{myisamchk} so that @code{--fast} and
		@code{--check-changed-tables} are also honored with @code{--sort-index} and
		@code{--analyze}.
		@item
		Fixed fatal bug in @code{LOAD TABLE FROM MASTER} that did not lock the table during index re-build
		@item
		@code{LOAD DATA INFILE} broke replication if the database was excluded from replication
		@@ -38130,7 +38192,7 @@ Added new commands @code{CREATE DATABASE db_name} and @code{DROP
		DATABASE db_name}.
		@item
		Added @code{RENAME} option to @code{ALTER TABLE}: @code{ALTER TABLE name
		RENAME AS new_name}.
		RENAME TO new_name}.
		@item
		@code{make_binary_distribution} now includes @file{libgcc.a} in
		@file{libmysqlclient.a}. This should make linking work for people who don't
		@@ -39474,7 +39536,7 @@ Fail safe replication.
		@item
		Optimize, test and document transactions safe tables
		@item
		@code{RENAME table as table, table as table [,...]}
		@code{RENAME table to table, table to table [,...]}
		@item
		Allow users to change startup options.
		@item
		@@ -39656,6 +39718,13 @@ A logfile analyzer that could parsed out information about which tables
		are hit most often, how often multi-table joins are executed, etc. It
		should help users identify areas or table design that could be optimized
		to execute much more efficient queries.
		@item
		Add @code{SUM(DISTINCT)}
		@item
		Add @code{ANY()},@code{EVERY()} and @code{SOME()} group functions. In
		ANSI SQL these only works on boolean columns, but we can extend these to
		work on any columns/expressions by applying: value == 0 -> FALSE and
		value <> 0 -> TRUE.
		@end itemize

		@node TODO sometime, TODO unplanned, TODO future, TODO

configure.in

+4 −4

Original line number	Diff line number	Diff line
		@@ -1709,10 +1709,10 @@ CHARSET_COMP_CS_INIT="$CHARSET_COMP_CS_INIT
		{
		0, /* end-of-list marker */
		NullS,
		\"\",
		\"\",
		\"\",
		\"\",
		NULL,
		NULL,
		NULL,
		NULL,
		0,
		NULL,
		NULL,

include/global.h

+10 −0

Original line number	Diff line number	Diff line
		@@ -113,6 +113,12 @@
		#define HAVE_ATOMIC_SUB
		#endif

		/* In Linux-ia64 including atomic.h will give us an error */
		#if defined(HAVE_LINUXTHREADS) && defined(__GNUC__) && defined(__ia64__)
		#undef HAVE_ATOMIC_ADD
		#undef HAVE_ATOMIC_SUB
		#endif

		#if defined(_lint) && !defined(lint)
		#define lint
		#endif
		@@ -207,6 +213,7 @@
		#endif

		/* Define void to stop lint from generating "null effekt" comments */
		#ifndef DONT_DEFINE_VOID
		#ifdef _lint
		int __void__;
		#define VOID(X) (__void__ = (int) (X))
		@@ -214,6 +221,7 @@ int __void__;
		#undef VOID
		#define VOID(X) (X)
		#endif
		#endif /* DONT_DEFINE_VOID */

		#if defined(_lint) \|\| defined(FORCE_INIT_OF_VARS)
		#define LINT_INIT(var) var=0 /* No uninitialize-warning */
		@@ -515,6 +523,8 @@ typedef long my_ptrdiff_t;
		#define NEAR /* Who needs segments ? */
		#define FAR /* On a good machine */
		#define HUGE_PTR
		#endif
		#ifndef STDCALL
		#define STDCALL
		#endif

include/mysqld_error.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -192,4 +192,5 @@
		#define ER_MASTER_NET_READ 1189
		#define ER_MASTER_NET_WRITE 1190
		#define ER_FT_MATCHING_KEY_NOT_FOUND 1191
		#define ER_ERROR_MESSAGES 192
		#define ER_LOCK_OR_ACTIVE_TRANSACTION 1192
		#define ER_ERROR_MESSAGES 193

myisam/myisamchk.c

+34 −14

Original line number	Diff line number	Diff line
		@@ -190,7 +190,7 @@ static struct option long_options[] =

		static void print_version(void)
		{
		printf("%s Ver 1.29 for %s at %s\n",my_progname,SYSTEM_TYPE,
		printf("%s Ver 1.30 for %s at %s\n",my_progname,SYSTEM_TYPE,
		MACHINE_TYPE);
		}

		@@ -295,7 +295,7 @@ static void get_options(register int argc,register char **argv)
		set_all_changeable_vars(changeable_vars);
		if (isatty(fileno(stdout)))
		check_param.testflag\|=T_WRITE_LOOP;
		while ((c=getopt_long(argc,argv,"acCdeif?lqrmosSTuUvVw#:b:D:k:O:R:A::t:",
		while ((c=getopt_long(argc,argv,"acCdeifF?lqrmosSTuUvVw#:b:D:k:O:R:A::t:",
		long_options, &option_index)) != EOF)
		{
		switch(c) {
		@@ -520,10 +520,30 @@ static int myisamchk(MI_CHECK *param, my_string filename)
		We are using --fast and the table is closed properly
		We are using --check-only-changed-tables and the table hasn't changed
		*/
		if (((param->testflag & T_CHECK_ONLY_CHANGED) &&
		if (param->testflag & (T_FAST \| T_CHECK_ONLY_CHANGED))
		{
		my_bool need_to_check= mi_is_crashed(info) \|\| share->state.open_count != 0;

		if ((param->testflag & (T_REP_BY_SORT \| T_REP \| T_SORT_RECORDS)) &&
		((share->state.changed & (STATE_CHANGED \| STATE_CRASHED \|
		STATE_CRASHED_ON_REPAIR) \|\|
		!(param->testflag & T_CHECK_ONLY_CHANGED))))
		need_to_check=1;

		if ((param->testflag & T_STATISTICS) &&
		(share->state.changed & STATE_NOT_ANALYZED))
		need_to_check=1;
		if ((param->testflag & T_SORT_INDEX) &&
		(share->state.changed & STATE_NOT_SORTED_PAGES))
		need_to_check=1;
		if ((param->testflag & T_REP_BY_SORT) &&
		(share->state.changed & STATE_NOT_OPTIMIZED_KEYS))
		need_to_check=1;
		if ((param->testflag & T_CHECK_ONLY_CHANGED) &&
		(share->state.changed & (STATE_CHANGED \| STATE_CRASHED \|
		STATE_CRASHED_ON_REPAIR))) \|\|
		(param->testflag & T_FAST) && share->state.open_count == 0)
		STATE_CRASHED_ON_REPAIR)))
		need_to_check=1;
		if (!need_to_check)
		{
		if (!(param->testflag & T_SILENT) \|\| param->testflag & T_INFO)
		printf("MyISAM file: %s is already checked\n",filename);
		@@ -535,7 +555,7 @@ static int myisamchk(MI_CHECK *param, my_string filename)
		}
		DBUG_RETURN(0);
		}

		}
		if ((param->testflag & (T_REP_BY_SORT \| T_REP \| T_STATISTICS \|
		T_SORT_RECORDS \| T_SORT_INDEX)) &&
		(((param->testflag & T_UNPACK) &&