SQL
Материал из База знаний QPAM
| # | Use case | WHERE Clause | HAVING Clause | |
|---|---|---|---|---|
| 1 | Filtering record from the... (based on the specified condition) |
Table | Groups | |
| 2 | Using without GROUP BY Clause | + | - | |
| 3 | Implements in | ROW operations | COLUMN operation | |
| 4 | Containing aggregate function | - | + | |
| 5 | Statements can be using with | SELECT, UPDATE, DELETE | only SELECT | |
| 6 | Order in respect to GROUP BY Clause | Before | After | |
| 7 | Row function | single (like UPPER, LOWER etc.) | multiple (like SUM, COUNT etc.) |