A newbie asked me a question. are you great gods here? I'm sorry! I have obtained the aid of two documents, aid01 and aid02, which are in different data tables with the same table fields.
Then I want to find the corresponding data table based on the aid field,
Then, the values of the fields zws and zws01 in the champaign table and return table are extracted respectively-1.
Big Brother, help me, new brother .... Online, etc! The code is passed. score immediately!
Reply to discussion (solution)
I can't understand it. let's give an example.
Updat' #@__ champaign 'set zws = zws-1 WHERE aid = '$ aid ';
I wrote the above, but it was unsuccessful. the zws field value has not changed. I am not-1. I have read the original value.
$ Does aid have a value? Echo $ aid;
@ Jordan102 asked me about the idea. it helped me a lot! Thanks to the moderator... I wrote the aid variable wrong. it should be aid01. thank you very much! Give away
