Scenario: Charlie, Amy and Robert have each filled out a survey which asks the user to select all the sports they are interested in. The question is multiple choice. In the table surveyData each row represents one of the answers each user chose. so Charlie(0001) chose basketball, rugby, acrobatics and darts. I would like to select from the table all
Tag: not-exists
Oracle SQL Subquery – Usage of NOT EXISTS
I used a query to find a list of Primary Keys. One Primary key per each ForiegnKey in a table by using below query. Let us say this is the result : 1,4,5 NOw I have another table – Table B that has list of all Primary keys. It has 1,2,3,6,7,8,9 I want a write a query using the above
SQL NOT EXIST returning duplicate value in query results
Hi Seem to be getting duplicates from this sql code it suppose to find records on BO Data that is not on Order Data by using the following as a key Keyorderstatus all my query results are on the Order Data already, How can a remedy this issue? Answer As @dfundako said – hard to check without data tables to
MySQL monthly Sale of last 12 months including months with no Sale
This query displaying result for only existing month. I need all 12 months sales. Output: Required Output: Answer Thanks for @pankaj hint, Here i resolved it via this query…
SQL – improve NOT EXISTS query performance
Is there a way I can improve this kind of SQL query performance: INSERT INTO … WHERE NOT EXISTS(Validation…) The problem is when I have many data in my table (like million of rows), the …