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erge with 4.0 + updates for column types

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monty@donna.mysql.com 2000-12-18 23:29:52 +02:00
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Docs/manual.texi
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@ -268,7 +268,7 @@ System-specific Issues
* HP-UX 10.20:: HP-UX 10.20 notes
* HP-UX 11.x:: HP-UX 11.x notes
* Mac OS X:: Mac OS X notes
* BEOS::
* BEOS:: BeOS Notes
Linux Notes (All Linux Versions)
@ -279,7 +279,7 @@ Linux Notes (All Linux Versions)
* Linux-Alpha:: Linux-Alpha notes
* MKLinux:: MkLinux notes
* Qube2:: Qube2 Linux notes
* Linux-Ia64::
* Linux-Ia64:: Linux-Ia64 notes
BSD/OS Notes
@ -510,7 +510,7 @@ Examples of Common Queries
* example-Maximum-row:: The row holding the maximum of a certain column
* example-Maximum-column-group:: Maximum of column per group
* example-Maximum-column-group-row:: The rows holding the group-wise maximum of a certain field
* example-user-variables::
* example-user-variables:: Using user variables
* example-Foreign keys:: Using foreign keys
Creating and Using a Database
@ -594,7 +594,7 @@ Speed of Queries that Access or Update Data
* Estimating performance:: Estimating query performance
* SELECT speed:: Speed of @code{SELECT} queries
* Where optimizations:: How MySQL optimizes @code{WHERE} clauses
* DISTINCT optimization::
* DISTINCT optimization:: How MySQL Optimizes @code{DISTINCT}
* LEFT JOIN optimization:: How MySQL optimizes @code{LEFT JOIN}
* LIMIT optimization:: How MySQL optimizes @code{LIMIT}
* Insert speed:: Speed of @code{INSERT} queries
@ -604,7 +604,7 @@ Speed of Queries that Access or Update Data
MySQL Utilites
* Programs:: What do the executables do?
* safe_mysqld::
* safe_mysqld:: safe_mysqld, the wrapper around mysqld
* mysqld_multi:: Program for managing multiple @strong{MySQL} servers
* mysql:: The command line tool
* mysqladmin:: Administering a @strong{MySQL} server
@ -705,7 +705,7 @@ Some Common Errors When Using MySQL
* Packet too large:: @code{Packet too large} error
* Communication errors:: Communication errors / Aborted connection
* Full table:: @code{The table is full} error
* Cannot create::
* Cannot create:: @code{Can't create/write to file} Error
* Commands out of sync:: @code{Commands out of sync} error in client
* Ignoring user:: @code{Ignoring user} error
* Cannot find table:: @code{Table 'xxx' doesn't exist} error
@ -715,7 +715,7 @@ Solving Some Common Problems with MySQL
* Log Replication:: Database replication with update log
* Backup:: Database backups
* Update log:: The update log
* Binary log::
* Binary log:: The binary log
* Slow query log:: Log of slow queries
* Multiple servers:: Running multiple @strong{MySQL} servers on the same machine
@ -831,15 +831,20 @@ Credits
MySQL change history
* News-4.0.x:: Changes in release 4.0 (development release)
* News-3.23.x:: Changes in release 3.23.x (Recommended; Gamma)
* News-3.22.x:: Changes in release 3.22.x (Still supported)
* News-3.21.x:: Changes in release 3.21.x
* News-3.20.x:: Changes in release 3.20.x
* News-3.19.x:: Changes in release 3.19.x
Changes in release 4.0 (Alpha)
* News-4.0.0:: Changes in release 4.0.0
Changes in release 3.23.x (Recommended; Gamma)
* News-3.23.30::
* News-3.23.30:: Changes in release 3.23.30
* News-3.23.29:: Changes in release 3.23.29
* News-3.23.28:: Changes in release 3.23.28
* News-3.23.27:: Changes in release 3.23.27
@ -983,7 +988,7 @@ Comments on porting to other systems
* Debugging server:: Debugging a @strong{MySQL} server
* Debugging client:: Debugging a @strong{MySQL} client
* The DBUG package:: The DBUG package
* Locking methods::
* Locking methods:: Locking methods
* RTS-threads:: Comments about RTS threads
* Thread packages:: Differences between different thread packages
@ -6557,7 +6562,7 @@ distribution.
* HP-UX 10.20:: HP-UX 10.20 notes
* HP-UX 11.x:: HP-UX 11.x notes
* Mac OS X:: Mac OS X notes
* BEOS::
* BEOS:: BeOS Notes
@end menu
@ -7004,7 +7009,7 @@ CC=fcc CFLAGS="-O -K fast -K lib -K omitfp -Kpreex -D_GNU_SOURCE -DCONST=const -
* Linux-Alpha:: Linux-Alpha notes
* MKLinux:: MkLinux notes
* Qube2:: Qube2 Linux notes
* Linux-Ia64::
* Linux-Ia64:: Linux-Ia64 notes
@end menu
@node Linux-x86, Linux-RedHat50, Linux, Linux
@ -13416,6 +13421,10 @@ the @code{FLOAT} and @code{DOUBLE} types described immediately below.
In @strong{MySQL} Version 3.23, this is a true floating-point value. In
earlier @strong{MySQL} versions, @code{FLOAT(precision)} always has 2 decimals.
Note that using @code{FLOAT} may give you some unexpected problems as
all calculation in @code{MySQL} is done with double precision.
@xref{No matching rows}.
@cindex ODBC compatibility
@cindex compatibility, with ODBC
This syntax is provided for ODBC compatibility.
@ -13455,17 +13464,18 @@ These are synonyms for @code{DOUBLE}.
An unpacked floating-point number. Cannot be unsigned. Behaves like a
@code{CHAR} column: ``unpacked'' means the number is stored as a string,
using one character for each digit of the value. The decimal point
and, for negative numbers, the @samp{-} sign, are not counted in M. If
@code{D} is 0, values will have no decimal point or fractional part.
The maximum range of @code{DECIMAL} values is the same as for
@code{DOUBLE}, but the actual range for a given @code{DECIMAL} column
may be constrained by the choice of @code{M} and @code{D}.
using one character for each digit of the value. The decimal point and,
for negative numbers, the @samp{-} sign, are not counted in M (but space
for these are reserved). If @code{D} is 0, values will have no decimal
point or fractional part. The maximum range of @code{DECIMAL} values is
the same as for @code{DOUBLE}, but the actual range for a given
@code{DECIMAL} column may be constrained by the choice of @code{M} and
@code{D}.
If @code{D} is left out it's set to 0. If @code{M} is left out it's set to 10.
Note that in @strong{MySQL} Version 3.22 the @code{M} argument includes the
sign and the decimal point.
Note that in @strong{MySQL} Version 3.22 the @code{M} argument had to
includes the space needed for the sign and the decimal point.
@tindex NUMERIC
@item NUMERIC(M,D) [ZEROFILL]
@ -13478,7 +13488,7 @@ This is a synonym for @code{DECIMAL}.
A date. The supported range is @code{'1000-01-01'} to @code{'9999-12-31'}.
@strong{MySQL} displays @code{DATE} values in @code{'YYYY-MM-DD'} format, but
allows you to assign values to @code{DATE} columns using either strings or
numbers.
numbers. @xref{DATETIME}.
@tindex DATETIME
@item DATETIME
@ -13487,6 +13497,7 @@ A date and time combination. The supported range is @code{'1000-01-01
00:00:00'} to @code{'9999-12-31 23:59:59'}. @strong{MySQL} displays
@code{DATETIME} values in @code{'YYYY-MM-DD HH:MM:SS'} format, but allows you
to assign values to @code{DATETIME} columns using either strings or numbers.
@xref{DATETIME}.
@tindex TIMESTAMP
@item TIMESTAMP[(M)]
@ -13510,6 +13521,7 @@ Note that @code{TIMESTAMP(X)} columns where X is 8 or 14 are reported to
be numbers while other @code{TIMESTAMP(X)} columns are reported to be
strings. This is just to ensure that one can reliably dump and restore
the table with these types!
@xref{DATETIME}.
@tindex TIME
@item TIME
@ -13517,7 +13529,7 @@ the table with these types!
A time. The range is @code{'-838:59:59'} to @code{'838:59:59'}.
@strong{MySQL} displays @code{TIME} values in @code{'HH:MM:SS'} format, but
allows you to assign values to @code{TIME} columns using either strings or
numbers.
numbers. @xref{TIME}.
@tindex YEAR
@item YEAR[(2|4)]
@ -13527,7 +13539,7 @@ are @code{1901} to @code{2155}, @code{0000} in the 4-digit year format,
and 1970-2069 if you use the 2-digit format (70-69). @strong{MySQL} displays
@code{YEAR} values in @code{YYYY} format, but allows you to assign values to
@code{YEAR} columns using either strings or numbers. (The @code{YEAR} type is
new in @strong{MySQL} Version 3.22.)
new in @strong{MySQL} Version 3.22.). @xref{YEAR}.
@tindex NATIONAL CHAR
@tindex NCHAR
@ -13553,7 +13565,7 @@ some old applications that depend on the existence of a column but that do not
actually use the value. This is also quite nice when you need a
column that only can take 2 values: A @code{CHAR(0)}, that is not defined
as @code{NOT NULL}, will only occupy one bit and can only take 2 values:
@code{NULL} or @code{""}.
@code{NULL} or @code{""}. @xref{CHAR}.
@tindex CHARACTER VARYING
@tindex CHAR VARYING
@ -13567,6 +13579,7 @@ compared in case-insensitive fashion unless the @code{BINARY} keyword is
given. @xref{Silent column changes}.
@code{VARCHAR} is a shorthand for @code{CHARACTER VARYING}.
@xref{CHAR}.
@tindex TINYBLOB
@tindex TINYTEXT
@ -13574,7 +13587,7 @@ given. @xref{Silent column changes}.
@itemx TINYTEXT
A @code{BLOB} or @code{TEXT} column with a maximum length of 255 (2^8 - 1)
characters. @xref{Silent column changes}.
characters. @xref{Silent column changes}. @xref{BLOB}.
@tindex BLOB
@tindex TEXT
@ -13582,7 +13595,7 @@ characters. @xref{Silent column changes}.
@itemx TEXT
A @code{BLOB} or @code{TEXT} column with a maximum length of 65535 (2^16 - 1)
characters. @xref{Silent column changes}.
characters. @xref{Silent column changes}. @xref{BLOB}.
@tindex MEDIUMBLOB
@tindex MEDIUMTEXT
@ -13590,7 +13603,7 @@ characters. @xref{Silent column changes}.
@itemx MEDIUMTEXT
A @code{BLOB} or @code{TEXT} column with a maximum length of 16777215
(2^24 - 1) characters. @xref{Silent column changes}.
(2^24 - 1) characters. @xref{Silent column changes}. @xref{BLOB}.
@tindex LONGBLOB
@tindex LONGTEXT
@ -13601,22 +13614,22 @@ A @code{BLOB} or @code{TEXT} column with a maximum length of 4294967295
(2^32 - 1) characters. @xref{Silent column changes}. Note that because
the server/client protocol and MyISAM tables has currently a limit of
16M per communication packet / table row, you can't yet use this
the whole range of this type.
the whole range of this type. @xref{BLOB}.
@tindex ENUM
@item ENUM('value1','value2',...)
An enumeration.
A string object that can have only one value, chosen from the list of values
@code{'value1'}, @code{'value2'}, @code{...}, or @code{NULL}. An @code{ENUM}
can have a maximum of 65535 distinct values.
An enumeration. A string object that can have only one value, chosen
from the list of values @code{'value1'}, @code{'value2'}, @code{...},
@code{NULL} or the special @code{""} error value. An @code{ENUM} can
have a maximum of 65535 distinct values. @xref{ENUM}.
@tindex SET
@item SET('value1','value2',...)
A set. A string object that can have zero or more values, each of which must
be chosen from the list of values @code{'value1'}, @code{'value2'},
@code{...} A @code{SET} can have a maximum of 64 members.
@code{...} A @code{SET} can have a maximum of 64 members. @xref{SET}.
@end table
@menu
@ -13640,7 +13653,7 @@ The storage requirements for each of the column types supported by
@cindex numeric types
@cindex types, numeric
@subheading Numeric types
@subheading Storage requirements for numeric types
@multitable @columnfractions .5 .5
@item @strong{Column type} @tab @strong{Storage required}
@ -13655,15 +13668,15 @@ The storage requirements for each of the column types supported by
@item @code{DOUBLE} @tab 8 bytes
@item @code{DOUBLE PRECISION} @tab 8 bytes
@item @code{REAL} @tab 8 bytes
@item @code{DECIMAL(M,D)} @tab @code{M} bytes (@code{D}+2, if @code{M < D})
@item @code{NUMERIC(M,D)} @tab @code{M} bytes (@code{D}+2, if @code{M < D})
@item @code{DECIMAL(M,D)} @tab @code{M+2} bytes if D > 0, @code{M+1} bytes if D = 0 (@code{D}+2, if @code{M < D})
@item @code{NUMERIC(M,D)} @tab @code{M+2} bytes if D > 0, @code{M+1} bytes if D = 0 (@code{D}+2, if @code{M < D})
@end multitable
@cindex date types
@cindex time types
@cindex types, date
@cindex types, time
@subheading Date and time types
@subheading Storage requirements for date and time types
@multitable @columnfractions .5 .5
@item @strong{Column type} @tab @strong{Storage required}
@ -13674,7 +13687,7 @@ The storage requirements for each of the column types supported by
@item @code{YEAR} @tab 1 byte
@end multitable
@subheading String types
@subheading Storage requirements for string types
@multitable @columnfractions .5 .5
@item @strong{Column type} @tab @strong{Storage required}
@ -13695,6 +13708,9 @@ the number of enumeration values (65535 values maximum)
on the number of set members (64 members maximum)
@end multitable
@cindex BLOB, size
@cindex TEXT, size
@cindex VARCHAR, size
@code{VARCHAR} and the @code{BLOB} and @code{TEXT} types are variable-length
types, for which the storage requirements depend on the actual length of
column values (represented by @code{L} in the preceding table), rather than
@ -13706,21 +13722,24 @@ and the storage requirement is 5 bytes.
The @code{BLOB} and @code{TEXT} types require 1, 2, 3, or 4 bytes to record
the length of the column value, depending on the maximum possible length of
the type.
the type. @xref{BLOB}.
If a table includes any variable-length column types, the record format will
also be variable-length. Note that when a table is created, @strong{MySQL}
may, under certain conditions, change a column from a variable-length type to a
fixed-length type, or vice-versa. @xref{Silent column changes}.
The size of an @code{ENUM} object is determined by the number of different
enumeration values. One byte is used for enumerations with up to 255 possible
values. Two bytes are used for enumerations with up to 65535 values.
@cindex ENUM, size
The size of an @code{ENUM} object is determined by the number of
different enumeration values. One byte is used for enumerations with up
to 255 possible values. Two bytes are used for enumerations with up to
65535 values. @xref{ENUM}.
@cindex SET, size
The size of a @code{SET} object is determined by the number of different
set members. If the set size is @code{N}, the object occupies @code{(N+7)/8}
bytes, rounded up to 1, 2, 3, 4, or 8 bytes. A @code{SET} can have a maximum
of 64 members.
of 64 members. @xref{SET}.
@node Numeric types, Date and time types, Storage requirements, Column types
@subsection Numeric Types
@ -18535,12 +18554,27 @@ keys that compress very good.
@example
DELETE [LOW_PRIORITY] FROM tbl_name
[WHERE where_definition] [LIMIT rows]
[WHERE where_definition]
@c [ORDER BY ...]
[LIMIT rows]
@end example
@code{DELETE} deletes rows from @code{tbl_name} that satisfy the condition
given by @code{where_definition}, and returns the number of records deleted.
@c If an @code{ORDER BY} clause is used, the rows will be deleted in that order.
@c This is really only useful in conjunction with @code{LIMIT}. For example:
@c @example
@c DELETE FROM somelog
@c WHERE user = 'jcole'
@c ORDER BY timestamp
@c LIMIT 1
@c @end example
@c This will delete the oldest entry (by @code{timestamp}) where the row matches
@c the @code{WHERE} clause.
If you issue a @code{DELETE} with no @code{WHERE} clause, all rows are
deleted. If you do this in @code{AUTOCOMMIT} mode, this works as
@code{TRUNCATE}. @xref{TRUNCATE}. One problem with this is that
@ -19728,14 +19762,19 @@ For more information about the efficiency of @code{INSERT} versus
@section @code{UPDATE} Syntax
@example
UPDATE [LOW_PRIORITY] [IGNORE] tbl_name SET col_name1=expr1,col_name2=expr2,...
[WHERE where_definition] [LIMIT #]
UPDATE [LOW_PRIORITY] [IGNORE] tbl_name
SET col_name1=expr1, [col_name2=expr2, ...]
[WHERE where_definition]
[ORDER BY ...]
[LIMIT #]
@end example
@code{UPDATE} updates columns in existing table rows with new values. The
@code{SET} clause indicates which columns to modify and the values they
should be given. The @code{WHERE} clause, if given, specifies which rows
should be updated. Otherwise all rows are updated.
@code{UPDATE} updates columns in existing table rows with new values.
The @code{SET} clause indicates which columns to modify and the values
they should be given. The @code{WHERE} clause, if given, specifies
which rows should be updated. Otherwise all rows are updated. If the
@code{ORDER BY} clause is specified, the rows will be updated in the
order that is specified.
If you specify the keyword @code{LOW_PRIORITY}, execution of the
@code{UPDATE} is delayed until no other clients are reading from the table.
@ -20642,7 +20681,6 @@ file can be removed, or @code{IN USE} if the file is needed by the transaction
subsystem)
@end itemize
@cindex threads, display
@cindex processes, display
@findex threads
@ -21109,7 +21147,7 @@ a @code{COMMIT} before executing the command):
@multitable @columnfractions .33 .33 .33
@item @code{ALTER TABLE} @tab @code{BEGIN} @tab @code{CREATE INDEX}
@item @code{DROP DATABASE} @tab @code{DROP TABLE} @tab @code{RENAME TABLE}
@item @code{TRUNCATE}
@item @code{TRUNCATE}
@end multitable
@findex LOCK TABLES
@ -23123,7 +23161,7 @@ SELECT * FROM shop
* example-Maximum-row:: The row holding the maximum of a certain column
* example-Maximum-column-group:: Maximum of column per group
* example-Maximum-column-group-row:: The rows holding the group-wise maximum of a certain field
* example-user-variables::
* example-user-variables:: Using user variables
* example-Foreign keys:: Using foreign keys
@end menu
@ -24705,7 +24743,6 @@ each column reference is associated with.
@node Getting information, Batch mode, Database use, Tutorial
@section Getting Information About Databases and Tables
What if you forget the name of a database or table, or what the structure of
a given table is (for example, what its columns are called)? @strong{MySQL}
addresses this problem through several statements that provide information
@ -27204,7 +27241,7 @@ great tool to find out if this is a problem with your query.
* Estimating performance:: Estimating query performance
* SELECT speed:: Speed of @code{SELECT} queries
* Where optimizations:: How MySQL optimizes @code{WHERE} clauses
* DISTINCT optimization::
* DISTINCT optimization:: How MySQL Optimizes @code{DISTINCT}
* LEFT JOIN optimization:: How MySQL optimizes @code{LEFT JOIN}
* LIMIT optimization:: How MySQL optimizes @code{LIMIT}
* Insert speed:: Speed of @code{INSERT} queries
@ -28151,7 +28188,7 @@ How big a @code{VARCHAR} column can be
@menu
* Programs:: What do the executables do?
* safe_mysqld::
* safe_mysqld:: safe_mysqld, the wrapper around mysqld
* mysqld_multi:: Program for managing multiple @strong{MySQL} servers
* mysql:: The command line tool
* mysqladmin:: Administering a @strong{MySQL} server
@ -28417,7 +28454,7 @@ list. Anything after a white space are ignored.
@table @code
@cindex config-file option
@item --config-file=...
@item --config-file=...
Alternative config file. NOTE: This will not affect this program's own
options (group @code{[mysqld_multi]}), but only groups
[mysqld#]. Without this option everything will be searched from the
@ -32436,7 +32473,7 @@ sure that no other programs are using the dynamic libraries!
* Packet too large:: @code{Packet too large} error
* Communication errors:: Communication errors / Aborted connection
* Full table:: @code{The table is full} error
* Cannot create::
* Cannot create:: @code{Can't create/write to file} Error
* Commands out of sync:: @code{Commands out of sync} error in client
* Ignoring user:: @code{Ignoring user} error
* Cannot find table:: @code{Table 'xxx' doesn't exist} error
@ -33536,7 +33573,7 @@ Drop or rename @code{old_table}.
* Log Replication:: Database replication with update log
* Backup:: Database backups
* Update log:: The update log
* Binary log::
* Binary log:: The binary log
* Slow query log:: Log of slow queries
* Multiple servers:: Running multiple @strong{MySQL} servers on the same machine
@end menu
@ -37942,8 +37979,13 @@ Since Version 3.23.23, @strong{MySQL} has support for full-text indexing
and searching. Full-text index in @strong{MySQL} is an
index of type @code{FULLTEXT}. @code{FULLTEXT} indexes can be created from
@code{VARCHAR} and @code{TEXT} columns at @code{CREATE TABLE} time or added
later with @code{ALTER TABLE} or @code{CREATE INDEX}. Full-text search is
performed with the @code{MATCH} function:
later with @code{ALTER TABLE} or @code{CREATE INDEX}. For big datasets,
adding @code{FULLTEXT} index with @code{ALTER TABLE}
(or @code{CREATE INDEX}) would be much faster, than inserting rows into
the empty table with @code{FULLTEXT} index.
Full-text search is
performed with the @code{MATCH} function.
@example
mysql> CREATE TABLE t (a VARCHAR(200), b TEXT, FULLTEXT (a,b));
@ -39765,6 +39807,7 @@ find on the
this means that the version has not yet been released!
@menu
* News-4.0.x:: Changes in release 4.0 (development version)
* News-3.23.x:: Changes in release 3.23.x (Recommended; Gamma)
* News-3.22.x:: Changes in release 3.22.x (Still supported)
* News-3.21.x:: Changes in release 3.21.x
@ -39772,7 +39815,26 @@ this means that the version has not yet been released!
* News-3.19.x:: Changes in release 3.19.x
@end menu
@node News-3.23.x, News-3.22.x, News, News
@node News-4.0.x, News-3.23.x, News, News
@appendixsec Changes in release 4.0 (Alpha)
We have now started to work on MySQL 4.0. We will update this section
as we add new features so that other can follow our development.
Our TODO section contains what we plan to have in 4.0. @xref{TODO MySQL 4.0}.
@menu
* News-4.0.0:: Changes in release 4.0
@end menu
@node News-4.0.0, , News-4.0.x, News-4.0.x
@appendixsubsec Changes in release 4.0
@itemize @bullet
@item
Added @code{ORDER BY} to @code{DELETE}.
@end itemize
@node News-3.23.x, News-3.22.x, News-4.0.x, News
@appendixsec Changes in release 3.23.x (Recommended; Gamma)
The 3.23 release has several major new features that are not
@ -44541,12 +44603,15 @@ tell us what you want to have done more quickly. @xref{Licensing and Support}.
@node TODO MySQL 4.0, TODO future, TODO, TODO
@appendixsec Things that should be in 4.0
We plan to make @strong{MySQL} Version 4.0 a 'quick' release where we only
We plan to make @strong{MySQL} Version 4.0 a 'quick' release where we only
add some new stuff to enable others to help us with developing new features
into Version 4.1. The @strong{MySQL} 4.0 version should only take us about
a month to make after which we want to stabilize it and start working on
Version 4.1. Version 4.0 should have the following new features:
The news section for 4.0 includes a list of the features we have already
implemented in the 4.0 tree. @xref{News-4.0.x}.
@itemize @bullet
@item
New table definition file format (@code{.frm} files) This will enable us
@ -44570,6 +44635,9 @@ The @code{mysqld} will support all standard @strong{MySQL} features and
one can use it in a threaded client to run different queries in each
thread.
@item
@code{SHOW DATABASE} should only show the database which you have some kind
of access privilege to.
@item
Online backup with very low performance penalty. The online backup will
make it easy to add a new replication slave without taking down the
master.
@ -44577,7 +44645,7 @@ master.
@code{DELETE FROM table_name} will return the number of deleted rows. For
fast execution one should use @code{TRUNCATE table_name}.
@item
Multi-table @code{DELETE} (cascading @code{DELETE} and multi-table
Multi-table @code{DELETE} (cascading @code{DELETE} and multi-table
@code{DELETE}.
@item
Better replication.
@ -44605,14 +44673,14 @@ New key cache
@item
Fail safe replication.
@item
Subqueries.
Subqueries.
@code{select id from t where grp in (select grp from g where u > 100)}
@item
@code{INSERT SQL_CONCURRENT ...}; This will force the insert to happen at the
end of the data file if the table is in use by an select to allow
concurrent inserts.
@item
Don't allow more than a defined number of threads to run MyISAM recover
Don't allow more than a defined number of threads to run MyISAM recover
at the same time.
@item
Change @code{INSERT ... SELECT} to use concurrent inserts.
@ -44999,7 +45067,7 @@ will ensure that your thread installation has even a remote chance to work!
* Debugging server:: Debugging a @strong{MySQL} server
* Debugging client:: Debugging a @strong{MySQL} client
* The DBUG package:: The DBUG package
* Locking methods::
* Locking methods:: Locking methods
* RTS-threads:: Comments about RTS threads
* Thread packages:: Differences between different thread packages
@end menu

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sql-bench/server-cfg.sh Executable file → Normal file
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0
sql-bench/test-insert.sh Executable file → Normal file
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7
sql/mysqld.cc
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@ -187,9 +187,10 @@ I_List<i_string> replicate_do_db, replicate_ignore_db;
// allow the user to tell us which db to replicate and which to ignore
I_List<i_string> binlog_do_db, binlog_ignore_db;
uint32 server_id = 0; // server id for replication
bool server_id_supplied = 0; // if we guessed server_id , we need to know
// about it
/* if we guessed server_id , we need to know about it */
uint32 server_id = 0;
bool server_id_supplied = 0;
uint mysql_port;
uint test_flags, select_errors=0, dropping_tables=0,ha_open_options=0;
uint volatile thread_count=0, thread_running=0, kill_cached_threads=0,