ORACLE where case when
时间: 2023-11-01 20:55:58 浏览: 49
You can use the `CASE` expression in the `WHERE` clause of an Oracle query to conditionally filter the results based on certain conditions. Here's an example:
```sql
SELECT column1, column2
FROM your_table
WHERE CASE
WHEN condition1 THEN condition1_result
WHEN condition2 THEN condition2_result
ELSE default_result
END;
```
In this example, you can replace `condition1`, `condition2`, `condition1_result`, `condition2_result`, and `default_result` with the actual conditions and values you want to use in your query. The `CASE` expression will evaluate each condition in order, and the corresponding result will be used in the filtering process.
Please note that the syntax may vary depending on your specific use case, so make sure to refer to the Oracle documentation for more details and examples.