Update basic-sql-operations.md (#3401)
Update basic-sql-operations.md (#3401)

* Update basic-sql-operations.md

* Apply suggestions from code review

Co-authored-by: Ran <91845a63ee024b790b3cbee92744546151858edf@pingcap.com>

* Update basic-sql-operations.md

* Update basic-sql-operations.md

* Update basic-sql-operations.md

Co-authored-by: Ran <91845a63ee024b790b3cbee92744546151858edf@pingcap.com>
Co-authored-by: Lilian Lee <c684465c17314189c18707959627e2ec4fdec2d0@pingcap.com>
pingcap/docs,pingcap/docs,pingcap/docs