clause and HAVING clause in SQL, and we'll see the differences between them:
1. **WHERE Clause**:
- The WHERE clause is used to filter rows from a table based on a specified condition.
- It is applied before the rows are grouped or aggregated using GROUP BY.
- It filters individual rows based on column values.
- It is typically used to eliminate unwanted rows from the result set.
2. **HAVING Clause**:
- The HAVING clause is used to filter rows that result from a GROUP BY operation based on a specified condition.
- It is applied after rows are grouped or aggregated.
- It filters groups of rows based on the result of an aggregate function (e.g., SUM, COUNT, AVG) applied to one or more columns.
- It is typically used to eliminate groups that don't meet certain aggregate conditions.
In summary, the WHERE clause filters individual rows before grouping, while the HAVING clause filters groups of rows after grouping and aggregation.
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