mysql - Unknown system variable using DECLARE -


i have following mysql query.

declare reccount int default 0; set reccount=(select count(*) tables waiterid=1 , date(tdate)=date(now()));

when execute it, following error: 

error code: 1193. unknown system variable 'reccount'

so, googled 'declaring variables in mysql.' appears uses declare:

i don't understand why query doesn't execute.

i'm using mysql workbench 6.0 ce , want execute query in php.

edit:
have used default 0. if remove default 0, , change query i've written below, executes. still doesn't save result should!

set reccount=(select count(*) tables waiterid=1 , date(tdate)=date(now())); select reccount;

you have run code in procedure or function.

if use control statements have use them in function or procedure.

mysql supports if, case, iterate, leave loop, while, , repeat constructs flow control within stored programs.

source


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