Q&A
| Q1: | When joining tables, must they be joined in the same order that they appear in the FROM clause? |
| A1: | No, they do not have to appear in the same order; however, performance benefits may be experienced depending on the order of tables in the FROM clause and the order that tables are joined. |
| Q2: | When using a BASE TABLE to join unrelated tables, must I select any columns from the base table? |
| A2: | No, the use of a BASE TABLE to join unrelated tables does not mandate columns for selection from the base table. |
| Q3: | Can I join on more than one column between tables? |
| A3: | Yes, some queries may require you to join on more than one column per table to provide a complete relationship between rows of data in the joined tables. |
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