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- 22 Mar, 2007 1 commit
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mhansson/martin@linux-st28.site authored
The problem in this bug is when we create temporary tables. When temporary tables are created for unions, there is some inferrence being carried out regarding the type of the column. Whenever this column type is inferred to be REAL (i.e. FLOAT or DOUBLE), MySQL will always try to maintain exact precision, and if that is not possible (there are hardware limits, since FLOAT and DOUBLE are stored as approximate values) will switch to using approximate values. The problem here is that at this point the information about number of significant digits is not available. Furthermore, the number of significant digits should be increased for the AVG function, however, this was not properly handled. There are 4 parts to the problem: #1: DOUBLE and FLOAT fields don't display their proper display lengths in max_display_length(). This is hard-coded as 53 for DOUBLE and 24 for FLOAT. Now changed to instead return the field_length. #2: Type holders for temporary tables do not preserve the max_length of the Item's from which they are created, and is instead reverted to the 53 and 24 from above. This causes *all* fields to get non-fixed significant digits. #3: AVG function does not update max_length (display length) when updating number of decimals. #4: The function that switches to non-fixed number of significant digits should use DBL_DIG + 2 or FLT_DIG + 2 as cut-off values (Since fixed precision does not use the 'e' notation) Of these points, #1 is the controversial one, but this change is preferred and has been cleared with Monty. The function causes quite a few unit tests to blow up and they had to b changed, but each one is annotated and motivated. We frequently see the magical 53 and 24 give way to more relevant numbers.
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- 29 Aug, 2006 1 commit
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kroki/tomash@moonlight.intranet authored
The problem was that during DROP TEMPORARY TABLE we tried to acquire the name lock, though temporary tables belongs to one connection, and no race is possible. The solution is to not use table name locking while executing DROP TEMPORARY TABLE.
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- 24 Feb, 2006 1 commit
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monty@mysql.com authored
(Needed for "list of pushes" web page and autopush)
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- 06 Oct, 2005 1 commit
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monty@mysql.com authored
Ensure that ccache is also used for C programs mysql: Ensure that 'delimiter' works the same way in batch mode as in normal mode mysqldump: Change to use ;; (instead of //) as a stored procedure/trigger delimiter Fixed test cases by adding missing DROP's and rename views to be of type 'v#' Removed MY_UNIX_PATH from fn_format() Removed current_db_used from TABLE_LIST Removed usage of 'current_thd' in Item_splocal Removed some compiler warnings A bit faster longlong2str code
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- 22 Sep, 2005 1 commit
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monty@mysql.com authored
Fixed problems in test suite where some test failed Fixed access to not initialized memory in federated Fixed access to not initialized memory when using BIT fields in internal temporary tables
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- 28 Jul, 2005 1 commit
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monty@mysql.com authored
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- 25 Apr, 2005 1 commit
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sergefp@mysql.com authored
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- 02 Mar, 2005 1 commit
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jimw@mysql.com authored
so that extra slashes are handled in tmpdir. (Bug #8497)
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- 02 Nov, 2004 1 commit
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monty@mysql.com authored
Added protocol::flush() for easier embedded-server code Increase block allocation variables a bit as they where a bit too small for MySQL 4.1 Added option --silent to client_test
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- 10 Dec, 2003 1 commit
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Deprecate the use of TYPE=... Preferred syntax is ENGINE=
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- 05 Jan, 2003 1 commit
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monty@mashka.mysql.fi authored
Cleaned up test; Removed wrong DROP TABLE commands and use standard table and database names. changed store_warning() -> push_warning_print()
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- 04 Dec, 2002 1 commit
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Sinisa@sinisa.nasamreza.org authored
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- 29 Oct, 2002 1 commit
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monty@mashka.mysql.fi authored
Added bug fix from 3.23 for AIX 4.3.3 and gcc 3.x Small change in EXCHANGE output Propagate open-files-limit from mysqld_safe -> mysqld Fixed speed bug in GROUP BY Added quotes around database name in CREATE DATABASE db_name (for binary log)
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- 28 Dec, 2000 1 commit
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monty@donna.mysql.com authored
A lot of new tests to mysqltest Fixed bug with BDB tables and autocommit
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