How to change length of Column through SQL query in Siebel October 09, 2019 Get Row Id of Column from Siebel Tools and replace below: SELECT ROW_ID, NAME AS 'Column Name', LENGTH AS 'Column Length' FROM S_COLUMN WHERE ROW_ID = ' 1-6D23-JMI0 ' --UPDATE S_COLUMN SET LENGTH = '255' WHERE ROW_ID = ' 1-6D23-JMI0 ' Read more