I have a table in a database that is built up like this :
Cost Date_val Time_val
I need to make a SQL query that returns Time_val value difference between two lines and the Date_val value of the first line. I need to do this only when the Cost value in the first line is 0 (it will never be 0 two times in a row).
How should my query look like ?
If you have heard of RFC822 date formats, they can be quite a challenge in SQL Server. RFC822 is an Internet standard format for email message headers, including all dates within those headers. The RFC822 protocols are available in detail at:
Composite queries are used to retrieve the results from joining multiple queries after applying any filters. UNION, INTERSECT, MINUS, and UNION ALL are some of the operators used to get certain desired results.
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