Skip to content

how to sum a column in SQL?

I am multiplying two columns of my view vDetalleEventoCaracteristicas and showing it in the Total column but now I want to sum all the records of the Total column How could I do that?

What’s the scope of table aliases?

This question is in the context of Sqlite but I wonder in general what’s the rule for aliases. Suppose I have the following query: The question is, will the two t1’s and t2’s clash? in my experience with multiple database vendors they won’t clash, but, could it confuse the optimizer to…

SQL select column with conditions JAVA

I tried to get specific value where the column of names in my database contains “jansen”,but when i run my code it shows error like this here is my code [and here is my database in Sqlyog] Answer You should put quotes around string values in your SQL statement. Another issue you may run into later…