Update a column in MySQL

I have a table table1 with three columns and a bunch of rows:

[key_col|col_a|col_b]

I want to update col_a with a set of values (i.e. leaving col_b unchanged), somethin开发者_如何学编程g like this:

INSERT INTO table1 AS t1 (key_col, col_a) VALUES ("k1", "foo"), ("k2", "bar");

But it doesn't work, how do I do this?

You have to use UPDATE instead of INSERT:

• UPDATE Syntax

For Example:

UPDATE table1 SET col_a='k1', col_b='foo' WHERE key_col='1';
UPDATE table1 SET col_a='k2', col_b='bar' WHERE key_col='2';

UPDATE table1 SET col_a = 'newvalue'

Add a WHERE condition if you want to only update some of the rows.

This is what I did for bulk update:

UPDATE tableName SET isDeleted = 1 where columnName in ('430903GW4j683537882','430903GW4j667075431','430903GW4j658444015')

if you want to fill all the column:

update 'column' set 'info' where keyID!=0;

If you want to update data you should use UPDATE command instead of INSERT