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Fix for bug #29131: SHOW VARIABLES reports variable 'log' but SET

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doesn't recognize it

This is a 5.0 version of the patch, it will be null-merged to 5.1

Problem:

'log' and 'log_slow_queries' were "fixed" variables, i.e. they showed up
in SHOW VARIABLES, but could not be used in expressions like 
"select @@log". Also, using them in the SET statement produced an 
incorrect "unknown system variable" error.

Solution:

Make 'log' and 'log_slow_queries' read-only dynamic variables to make 
them available for use in expressions, and produce a correct error 
about the variable being read-only when used in the SET statement.
This commit is contained in:
kaa@polly.(none)
2007-10-25 14:02:27 +04:00
parent 349841118f
commit 99f4b74311
6 changed files with 62 additions and 6 deletions
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4
sql/mysql_priv.h
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@ -1306,8 +1306,8 @@ extern bool opt_endinfo, using_udf_functions;
extern my_bool locked_in_memory;
extern bool opt_using_transactions, mysqld_embedded;
extern bool using_update_log, opt_large_files, server_id_supplied;
extern bool opt_log, opt_update_log, opt_bin_log, opt_slow_log, opt_error_log;
extern my_bool opt_log_queries_not_using_indexes;
extern bool opt_update_log, opt_bin_log, opt_error_log;
extern my_bool opt_log, opt_slow_log, opt_log_queries_not_using_indexes;
extern bool opt_disable_networking, opt_skip_show_db;
extern my_bool opt_character_set_client_handshake;
extern bool volatile abort_loop, shutdown_in_progress, grant_option;