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--source include/not_embedded.inc
--source include/have_perfschema.inc
set @v1a="Hello";
set @v2a="World";
set @v3a=65;
set @v4a=NULL;
select @v1a, @v2a, @v3a, @v4a, @v_unknown;
select VARIABLE_NAME, VARIABLE_VALUE
from performance_schema.user_variables_by_thread
order by VARIABLE_NAME;
connect(con1, localhost, root,,);
set @v1b="Salut";
set @v2b="La compagnie";
set @v3b=12;
set @v4b=NULL;
select @v1b, @v2b, @v3b, @v4b, @v_unknown;
select VARIABLE_NAME, VARIABLE_VALUE
from performance_schema.user_variables_by_thread
order by VARIABLE_NAME;
--connection default
--disconnect con1
# Wait till all disconnects are completed
let $count_sessions= 1;
--source include/wait_until_count_sessions.inc
select VARIABLE_NAME, VARIABLE_VALUE
from performance_schema.user_variables_by_thread
order by VARIABLE_NAME;
# Make sure large values are not truncated
set @blob_under_16_bits=repeat("a", 65000);
set @blob_under_24_bits=repeat("a", 1000000);
# Not testable because of limitation on max_allowed_packet
# set @blob_under_32_bits=repeat("a", 20000000);
select length(@blob_under_16_bits);
select length(@blob_under_24_bits);
# select length(@blob_under_32_bits);
select variable_name, length(variable_value)
from performance_schema.user_variables_by_thread
where VARIABLE_NAME like "blob%"
order by VARIABLE_NAME;
# Check the behaviour with procedures if the values passed inside procedures gets reflected in the table performance_schema.user_variables_by_thread.
set @a=10;
DELIMITER |;
CREATE procedure test_user_val
(IN input INT,OUT output INT)
BEGIN
SELECT input + input
INTO output;
END|
DELIMITER ;|
CALL test_user_val(@a , @total);
select VARIABLE_NAME,VARIABLE_VALUE from performance_schema.user_variables_by_thread
where variable_name in ('a','total') order by VARIABLE_NAME;
# Checking behaviour around triggers if the values in performance_schema.user_variables_by_thread are updated from within trigger
create table t1 (c1 int);
DELIMITER |;
CREATE TRIGGER test_uvar_trigger
AFTER INSERT ON t1
FOR EACH ROW BEGIN
set @a=@a+@a;
END|
DELIMITER ;|
insert into t1 values(1);
select VARIABLE_NAME,VARIABLE_VALUE from performance_schema.user_variables_by_thread
where variable_name ='a' order by VARIABLE_NAME;
insert into t1 values(1);
select VARIABLE_NAME,VARIABLE_VALUE from performance_schema.user_variables_by_thread
where variable_name ='a' order by VARIABLE_NAME;
drop table t1;
drop procedure test_user_val;
#drop TRIGGER test_uvar_trigger;
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