Optimize the original table to add a Meituan living project, but I have some look not to understand her to write SQL, he wrote a deposit first, then as if also used the log tables, regard it as a table, (save some don't understand) then in close to the source data garage wrote a package, write a little bit of logic, I feel that can't move it to the saved, if I were in the bag, how changes are better,

CodePudding user response:

Look not to understand others' logic, you added a new column is how to calculate? If others in the temporary table or other way, do you want to add fields, such as

CodePudding user response:

Look not to understand what it is best not to move, is very dangerous,

CodePudding user response:

reference 1st floor stelf response:

look not to understand others' logic, you added a new column is how to calculate? If others in the temporary table or other way, do you want to add fields, such as

I use the insert