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Sql updating multiple columns one update statement

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After each exercise, we provide the solution so you can check your answer.

If you omit the WHERE clause, all records in the table will be updated!

PUT_LINE ('YOU QUALIFY FOR A DISCOUNT OF 30%'); INV_ID|INV_DATETIME |INV_SUBTOTAL|INV_DISCOUNT| INV_TOTAL ----------|------------------------------|------------|------------|----------- 100|14-NOV-12 .918000 | $.00| $.00| $.00 101|18-MAR-12 .000000 | $.00| $.00| $.00 102|18-MAR-12 .000000 | $.00| $.00| $.00 103|18-MAR-12 .000000 | .00| .00| .00 104|18-MAR-12 .000000 | $.00| $.00| $.00 105|12-JUN-12 .000000 | $.00| $.00| $.00 106|06-AUG-12 .000000 | $.00| $.00| $.00 107|04-MAY-12 .000000 | $.00| $.00| $.00 108|29-NOV-12 .000000 | .00| .00| .50 109|18-MAR-12 .000000 | .00| .00| .00 108 is suppose to be 20% of 25, the discount amount is correct but the inv_total is not, it should be , not .50 109 is suppose to be 30% of 50 the discount amount is correct but inv_total should be 103 calculates fine, which is 10% discount It's perfectly possible to update multiple columns in the same statement, and in fact your code is doing it.

So why does it seem that "INV_TOTAL is not updating, only the inv_discount"?

Question: I want to update multiple rows in my table, and I need to understand how to update multiple columns.

I already know how to update multiple rows using my where clause, but I don't see how to update multiple columns.

These exercises allow you to try out your skills with the UPDATE statement.

You will be given questions that you need to solve.

IF V_COUNT = 9 THEN UPDATE INVOICE SET INV_DISCOUNT = DISC3 * INV_SUBTOTAL , INV_TOTAL = INV_SUBTOTAL - INV_DISCOUNT WHERE INV_ID = I_INV_ID; DBMS_OUTPUT.

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The SQL Server (Transact-SQL) UPDATE statement is used to update existing records in a table in a SQL Server database.

There are 3 syntaxes for the UPDATE statement depending on whether you are performing a traditional update or updating one table with data from another table.

Update Statement The UPDATE statement is used to modify data in a database table.