Adding comments to SQL statements helps make the SQL queries more readable. Comments aren’t executed as part of the SQL query.
To comment out a single line, or part of a line, use -- at the beginning of a line or in the middle of a line.
For example, these two lines are comments.
-- This line is a comment, and the line below is commented out as well.
-- SELECT * from ssot__Individual__dlm
To add a multiline comment, enclose the block between /* and */ characters.
For example, this entire block is commented out.
/*
Multi-line comment block.
Useful to add some notes about the SQL query.
*/