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This doesn't work:
UPDATE customers SET firstname="John" AND lastname="Smith" WHERE id=1; 
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The UPDATE statement in SQL is used to update the data of an existing table in database. We can update single columns as well as multiple columns using UPDATE statement as per our requirement. UPDATE table_name SET column1 = value1, column2 = value2,...
We can update multiple columns by specifying multiple columns after the SET command in the UPDATE statement. The UPDATE statement is always followed by the SET command, it specifies the column where the update is required.
To update multiple columns use the SET clause to specify additional columns. Just like with the single columns you specify a column and its new value, then another set of column and values. In this case each column is separated with a column.
Separate values with commas. AND is an logical operator, its place is in WHERE and ON clauses.
UPDATE customers SET firstname="John", lastname="Smith" WHERE id=1; If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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