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Insert trigger subtract value from another table

I am a newbie at sql. I made a php website that user can make item purchases. And now I want to make a trigger for when a receipt is created, it subtracts the quantity in the item stock table with the …

Creating a table Sql Server [closed]

How to create SQL Server tables with 5 columns: 1 IdP column name. 2,3,4,5 column name: a / b / c / d Features: 1 column (int) is to have 450 rows, with IdP numbered from 1 to 450. The 2nd column (…

Update sql record by checkbox in php

I have a problem to update sql record by checkbox in php.My problem is when I press the update button,all can show me update previous info record,but only in the checkbox unable to show me the …

Insist on number of rows on left side of join

I have an issue where I want to join two tables where there is 1 record on the left and many on the right side but only need information from the right that exists in all of those records – in other words, insist on only getting 1:1 not 1:n in my results. Example, if I run this statement below,