MYSQL07: Updating a table


To edit or modify existing data in a table UPDATE command is used. The syntax is as follows:

UPDATE tableName SET field1 = value1, field2 = value2... WHERE condition

for example

UPDATE students SET name = ‘Jamie’ WHERE name = ‘Joe’;

this will replace the existing name value to new one, in records meeting the condition. This will change the name Joe to Jamie. To check the value is updated, we issue select all

SELECT * FROM students ;

Id
name
age
1
Calvin
12
2
Jamie
15
3
Rosy
17

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