MySQL-এ একাধিক কলামের মান একসাথে করতে বিল্ট-ইন CONCAT() ফাংশন ব্যবহার করুন। সিনট্যাক্স:
SELECT CONCAT('(',yourColumnName1,',', yourColumnName2,',',yourColumnName3,...N')') as anyVariableName from yourTableName;
উদাহরণের জন্য একটি টেবিল তৈরি করি:
mysql> create table Concatenation_OperatorDemo -> ( -> -> VendorId int, -> VendorName varchar(100), -> VendorCountry varchar(100) -> ); Query OK, 0 rows affected (0.69 sec)
টেবিলে রেকর্ড যোগ করুন:
mysql> insert into Concatenation_OperatorDemo values(101,'Carol','US'); Query OK, 1 row affected (0.19 sec) mysql> insert into Concatenation_OperatorDemo values(102,'Bob','UK'); Query OK, 1 row affected (0.18 sec) mysql> insert into Concatenation_OperatorDemo values(103,'John','US'); Query OK, 1 row affected (0.14 sec) mysql> insert into Concatenation_OperatorDemo values(104,'David','UK'); Query OK, 1 row affected (0.25 sec)
সব রেকর্ড দেখান:
mysql> select *from Concatenation_OperatorDemo;
আউটপুট:
+----------+------------+---------------+ | VendorId | VendorName | VendorCountry | +----------+------------+---------------+ | 101 | Carol | US | | 102 | Bob | UK | | 103 | John | US | | 104 | David | UK | +----------+------------+---------------+ 4 rows in set (0.00 sec)
এখন তিনটি কলাম একসাথে করুন:
mysql> select concat('(',VendorId,',', VendorName,',', VendorCountry,')')as ConcatenationDemo -> from Concatenation_OperatorDemo;
ফলাফল:
+-------------------+ | ConcatenationDemo | +-------------------+ | (101,Carol,US) | | (102,Bob,UK) | | (103,John,US) | | (104,David,UK) | +-------------------+ 4 rows in set (0.00 sec)
