How can i get mySql column Length/Values

Question

I can get column table information with this command, but that don\'t return column Length/Values, how can i get that?

SELECT COLUMN_NAME, DATA_TYPE         


        

Answer 1

The easiest way to do is using the LEN() function as this example:

SELECT CustomerName,LEN(Address) as LengthOfAddress
FROM Customers;

So for your code should be:

SELECT COLUMN_NAME, LEN(COLUMN_NAME) as NAME_LENGTH, 
DATA_TYPE, LEN(DATA_TYPE) as DATA_LENGTH 
FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name = 'tableName';

Here you have more information!