Const
Convenience value for an empty Sql instance.
Sql
Shortcut for raw('').
raw('')
note that raw('') != empty and sql != empty due to object references, so it is often better to just use this whenever you are dealing with an empty Sql value
raw('') != empty
sql != empty
Convenience value for an empty
Sqlinstance.Shortcut for
raw('').note that
raw('') != emptyandsql != emptydue to object references, so it is often better to just use this whenever you are dealing with an emptySqlvalue