I have the below stored procedure which works fine.
CREATE DEFINER=`root`@`localhost` PROCEDURE `TxCountByDatePerod`(IN `fromdate` DATE, IN `todate` DATE, IN `department` VARCHAR(20), IN `status` VARCHAR(10), IN `ipg` VARCHAR(20))
SELECT d.dept_name,
s.service_name,
COUNT(*) AS all_row_count
FROM department AS d
INNER JOIN service s ON s.dept_id=d.dept_id
INNER JOIN transaction_detail t ON s.dept_id=t.dept_id
AND s.service_id=t.service_id
WHERE t.tx_begin_date BETWEEN fromdate AND todate
AND (t.dept_id = department
OR department ='null')
AND (t.tx_status = status
OR status ='null')
AND (t.pg_name = ipg
OR ipg ='null')
GROUP BY t.dept_id,
t.service_id
Above SP is written in MySQL to get the number of transactions for a given time duration, provided by a particular service of a particular department. A transactions can be 3 different transaction statuses( tx_status
coulmn) which are completed(1), failed(-1), uncompleted(0).
What I'm trying to do is get the data for the report below.
The right now the problem is that all the status are grouped into one row. I tried the below SQL to get the data as needed but it gives out an error that the syntax is not correct.
CREATE DEFINER=`root`@`localhost` PROCEDURE `TxCountByDatePerod`(IN `fromdate` DATE, IN `todate` DATE, IN `department` VARCHAR(20), IN `status` VARCHAR(10), IN `ipg` VARCHAR(20))
SELECT d.dept_name,
s.service_name,
COUNT(*) AS all_row_count,
IF(t.tx_status = 1,
SELECT COUNT(*)
FROM transaction_detail
WHERE tx_status = 1) AS successful_tx_count
FROM department AS d
INNER JOIN service s ON s.dept_id=d.dept_id
INNER JOIN transaction_detail t ON s.dept_id=t.dept_id
AND s.service_id=t.service_id
WHERE t.tx_begin_date BETWEEN fromdate AND todate
AND (t.dept_id = department
OR department ='null')
AND (t.tx_status = status
OR status ='null')
AND (t.pg_name = ipg
OR ipg ='null')
GROUP BY t.dept_id,
t.service_id
Please see the added line below.
IF(t.tx_status = 1, SELECT COUNT(*) FROM transaction_detail WHERE tx_status = 1) AS successful_tx_count is added to the SP.
How can I fix this?
the correct syntax for using an IF statement with a select is like this
CREATE DEFINER=`root`@`localhost` PROCEDURE `TxCountByDatePerod`(IN `fromdate` DATE, IN `todate` DATE, IN `department` VARCHAR(20), IN `status` VARCHAR(10), IN `ipg` VARCHAR(20))
SELECT d.dept_name,
s.service_name,
COUNT(*) AS all_row_count,
IF(t.tx_status = 1,
(SELECT COUNT(*) FROM transaction_detail WHERE tx_status = 1),
0
) AS successful_tx_count
FROM department AS d
INNER JOIN service s ON s.dept_id=d.dept_id
INNER JOIN transaction_detail t ON s.dept_id=t.dept_id
AND s.service_id=t.service_id
WHERE t.tx_begin_date BETWEEN fromdate AND todate
AND (t.dept_id = department
OR department ='null')
AND (t.tx_status = status
OR status ='null')
AND (t.pg_name = ipg
OR ipg ='null')
GROUP BY t.dept_id,
t.service_id
NOTE:
I just put in a default 0 value since you are doing a count but you can change that
IF(t.tx_status = 1
,(SELECT COUNT(*) FROM transaction_detail WHERE tx_status = 1)
,0 -- # -- this can be anything.. you could put in NULL or whatever else if you want
) AS successful_tx_count
you can also use a user defined variable and plug that in like so
SET @a := (SELECT COUNT(*) FROM transaction_detail WHERE tx_status = 1);
and then plug the @a variable in your if statement like so
if(t.tx_status = 1, @a, 0)
See this ARTICLE for more details on the if function
This is your select
statement:
SELECT d.dept_name,
s.service_name,
COUNT(*) AS all_row_count,
IF(t.tx_status = 1,
SELECT COUNT(*)
FROM transaction_detail
WHERE tx_status = 1) AS successful_tx_count
Why are you using a subquery here? I suspect that you want the "successful" count to match the same conditions (from the where
clause) as the count(*)
. So, just use conditional aggregation:
SELECT d.dept_name,
s.service_name,
COUNT(*) AS all_row_count,
SUM(t.tx_status = 1) AS successful_tx_count
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