Commit 816dc4eb authored by Sinisa@sinisa.nasamreza.org's avatar Sinisa@sinisa.nasamreza.org
Browse files

Added functions : 

* binary XOR
* logical XOR
* CHECK_LOCK("lock_name")
parent ade20c5b

Docs/manual.texi

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@@ -49578,6 +49578,39 @@ Our TODO section contains what we plan to have in 4.0. @xref{TODO MySQL 4.0}. 














@itemize @bullet















@item













Added binary XOR. 

























The one that with a query like :

























select 11 ^ 3;

























returns 8.

























Based on the code originated  by Hartmut Holzgraefe <hartmut@six.de>.













@item

























Added logical XOR.

























The one that with a query like:

























select 1 XOR 1;

























returns 0;

























Based on the code originated by Hartmut Holzgraefe <hartmut@six.de>.













@item













Add function CHEDK_LOCK("lock_name"). 













This function checks if the lock of the certain name is available or not. 













This function does not attempt to take a look.













It is used like this:

























   SELECT CHECK_LOCK("some_lock");

























it will return 1 if the lock is held by a process (including by













itself), 0 if it is currently not held by anyone and NULL on













errors.













Based on the code originated  by Hartmut Holzgraefe <hartmut@six.de>.













@item















Removed @code{mysql_ssl_clear()}, as this was not needed.















@item















@code{DECIMAL} and @code{NUMERIC} types can now read exponential numbers.

























mysql-test/r/func_test.result



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@@ -40,6 +40,12 @@ select 2 in (3,2,5,9,5,1),"monty" in ("david","monty","allan"), 1.2 in (1.4,1.2,













select -1.49 or -1.49,0.6 or 0.6;















-1.49 or -1.49	0.6 or 0.6















1	1













select 3 ^ 11;













3 ^ 11













8













select 1 XOR 0;













1 XOR 0













1















select 5 between 0 and 10 between 0 and 1,(5 between 0 and 10) between 0 and 1;















5 between 0 and 10 between 0 and 1	(5 between 0 and 10) between 0 and 1















0	1

































mysql-test/r/rpl_get_lock.result



+3
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@@ -17,4 +17,7 @@ get_lock("lock",3)













select * from t1;















n















1













select check_lock("lock");













check_lock("lock")













1















drop table t1;
























mysql-test/t/func_test.test



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−1






























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@@ -15,7 +15,8 @@ select 2 between 1 and 3, "monty" between "max" and "my",2=2 and "monty" between













select 'b' between 'a' and 'c', 'B' between 'a' and 'c';















select 2 in (3,2,5,9,5,1),"monty" in ("david","monty","allan"), 1.2 in (1.4,1.2,1.0);















select -1.49 or -1.49,0.6 or 0.6;



























select 3 ^ 11;













select 1 XOR 0;















#















# Wrong usage of functions















#

































mysql-test/t/rpl_get_lock.test



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@@ -22,6 +22,7 @@ sync_with_master;













select get_lock("lock",3);















select * from t1;















connection master1;













select check_lock("lock");















drop table t1;















save_master_pos;















connection slave;