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I use this to update (add points) rows which mgroup is 15
UPDATE ibf_members SET points = points + 500 WHERE mgroup = 15
What can I use to update (add points + 500) for rows which has its id as 5, 7, 10, 11, 16, 25 and also has mgroup as 15?
840
- GeeksforGeeks How to Update All Rows in SQL? In SQL, sometimes situations arise to update all the rows of the table. We will use the UPDATE command to achieve this in SQL. For this article, we will be using the Microsoft SQL Server as our database. UPDATE table_name SET column1 = value1, column2 = value2, ... WHERE condition;
updates the value with the same, according to the column definition. But for some reason SQL Server ignores the collation settings and actually writes the page. So, it's not "the same" by data definition, it's "the same" by binary contents of the page (s).
PostgreSQL is a database and not an ORM. It would have decreased performance if it took the time to check if a new value was the same as the updated value in your query. It will therefore update the value regardless of whether it is the same as the new value or not.
1. Define "the same". updates the value with the same, according to the column definition. But for some reason SQL Server ignores the collation settings and actually writes the page. So, it's not "the same" by data definition, it's "the same" by binary contents of the page (s).
You can use the IN clause for this, which is easier to read (and possibly more efficient?) than building a giant OR list. Try something like:
UPDATE ibf_members
SET points = points + 500
WHERE mgroup = 15
AND id IN (5, 7, 10, 11, 16, 25);
Just add another condition to your WHERE clause:
UPDATE ibf_members SET points = points + 500 WHERE mgroup = 15 AND id IN (5, 7, 10, 11, 16, 25)
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