Reviewing It |
1: | What is the purpose of SQL functions? |
2: | What is the DUAL table useful for? |
3: | Explain SQL concatenation. |
4: | The DECODE statement is what? |
5: | When might you use the HAVING clause? |
6: | Briefly describe what a JOIN is. |
7: | What is 'qualification' and why is it important to a self-join? |
8: | Name the four types of sub-queries. |
9: | What is an IN-LINE view? |
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