How to generate dynamic cross tab query - mysql

Question

I am trying to create a cross tab query and i have written the following query.when i am running it getting an error.so please suggest me right syntax to get cross tab query.
set #sql=null;
select group_concat(distinct concat('sum(case when TX_NAME="',TX_NAME,
'" then sum(FL_AMOUNT) else 0 end ) as ',TX_NAME))into #sql
from cmn_test_bill_x_value ;
set #sq l=con cat('select b.KYS_ID,b.FKYS_CLIENT_ID,',#sql,'
from cmn_bill b left join cmn_patient_bill_details bd
on b.KYS_ID=bd.FKYS_BILL_ID
left join cmn_test_bill_type t
on bd.FKYS_BILL_CATEGORY=t.KYS_ID
left join cmn_test_bill_x_value x
on bd.FKYS_BILL_SUB_CATEGORY=x.KYS_ID
group by x.TX_NAME');
PREPARE stmt FROM #sql;
EXECUTE stmt;
DEAL LOCATE PREPARE stmt;

Answer 1

UPDATED: Try
SET #sql = NULL;
SET #month = '2014-02-01';
SELECT GROUP_CONCAT(DISTINCT CONCAT('SUM(CASE WHEN TX_NAME=''', tx_name,
''' THEN fl_amount ELSE 0 END) AS `', tx_name, '`'))
INTO #sql
FROM cmn_test_bill_x_value;
SET #sql = CONCAT('
SELECT b.KYS_ID, b.FKYS_CLIENT_ID, ', #sql, '
FROM cmn_bill b LEFT JOIN cmn_patient_bill_details bd
ON b.kys_id = bd.fkys_bill_id LEFT JOIN cmn_test_bill_type t
ON bd.fkys_bill_category=t.kys_id LEFT JOIN cmn_test_bill_x_value x
ON bd.fkys_bill_sub_category=x.kys_id
WHERE b.date >= ''', #month , '''
AND b.date < ''', #month + INTERVAL 1 MONTH - INTERVAL 1 DAY, '''
GROUP BY x.TX_NAME');
PREPARE stmt FROM #sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
Here is SQLFiddle demo