Writing CAML queries from scratch is time-consuming and error-prone. Without a tool, you are forced to memorize internal field names and complex nesting rules.
Run your query in the tool before deploying it to production. download caml query builder
Supports both the Object Model and Web Services. 2. Stramit CAML Viewer Writing CAML queries from scratch is time-consuming and
Build queries using dropdowns instead of syntax. download caml query builder
Which are you using? (Online/O365 or On-Premises)