CONCAT functions in MySQL use the tutorial

  • 2020-10-23 21:14:46
  • OfStack

Use the MySQL CONCAT() function to concatenate two strings to form a single 1 string. Try this example:


mysql> SELECT CONCAT('FIRST ', 'SECOND');
+----------------------------+
| CONCAT('FIRST ', 'SECOND') |
+----------------------------+
| FIRST SECOND        |
+----------------------------+
1 row in set (0.00 sec)

To understand the CONCAT function in more detail, consider that the EMPLOYEE_TBL table has the following records:


mysql> SELECT * FROM employee_tbl;
+------+------+------------+--------------------+
| id  | name | work_date | daily_typing_pages |
+------+------+------------+--------------------+
|  1 | John | 2007-01-24 |        250 |
|  2 | Ram | 2007-05-27 |        220 |
|  3 | Jack | 2007-05-06 |        170 |
|  3 | Jack | 2007-04-06 |        100 |
|  4 | Jill | 2007-04-06 |        220 |
|  5 | Zara | 2007-06-06 |        300 |
|  5 | Zara | 2007-02-06 |        350 |
+------+------+------------+--------------------+
7 rows in set (0.00 sec)

You can link name and ID in the above table with the following command:


mysql> SELECT CONCAT(id, name, work_date)
  -> FROM employee_tbl;
+-----------------------------+
| CONCAT(id, name, work_date) |
+-----------------------------+
| 1John2007-01-24       |
| 2Ram2007-05-27       |
| 3Jack2007-05-06       |
| 3Jack2007-04-06       |
| 4Jill2007-04-06       |
| 5Zara2007-06-06       |
| 5Zara2007-02-06       |
+-----------------------------+
7 rows in set (0.00 sec)



Related articles: