Updating Values in a Table in MySQL

Q

How To Update Values in a Table in MySQL?

✍: FYIcenter.com

A

If you want to update some values in one row or multiple rows in a table, you can use the UPDATE statement. The tutorial script below shows a good example:

mysql> UPDATE fyi_links SET counts = 999, notes = 'Good.' 
   WHERE id = 101;
Query OK, 1 row affected (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 0

mysql> SELECT id, url, notes, counts, DATE(created) 
   FROM fyi_links WHERE id = 101;
+-----+-------------------+-------+--------+---------------+
| id  | url               | notes | counts | DATE(created) |
+-----+-------------------+-------+--------+---------------+
| 101 | dev.fyicenter.com | Good. |    999 | 2006-04-30    |
+-----+-------------------+-------+--------+---------------+
1 row in set (0.00 sec)

⇒ Update Column Values on Multiple Rows in MySQL

⇐ Insert Multiple Rows with 1 INSERT Statement in MySQL

⇑ INSERT, UPDATE and DELETE Statements in MySQL

⇑⇑ MySQL Database Tutorials

2018-01-13, 2039🔥, 0💬

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Omitting Columns in INSERT Statements in MySQL
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Update Column Values on Multiple Rows in MySQL
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Is the Order of Columns in the SET Clause Important in MySQL? Yes. The order of columns in the SET clause of the UPDATE statement is important. There is a BIG DIFFERENCE between MySQL and Oracle on update columns with previous values: Oracle provides you the existing values from the database on colu... 2018-01-13, 2289🔥, 0💬

Violation of Unique Value Constraint in MySQL
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