摘要：Creating Tables The Creating Table statement enables you to create tables whitout rows from column definitions or to create tables from a query result 阅读全文

摘要：Selecting Data from More than One Table by Using Joins Inner Joins: An Inner join returns only the subset of rows from the first table that matches ro 阅读全文

摘要：1. Ordering the SELECT Statement: 1.select 2. From 3. Where 4. Group by 5. Having 6. Order by 2. The OUTOBS=option limits the number of rows in the ou 阅读全文