![]() ![]() Select id, name from Product_Bak where id = 2įrom product P inner join CTE P2 on P.id = P2. At least this is how you would do it in 'general sql'. select from schedule where col1 is not null OR col 2 is not null OR. select from schedule where col1 is not null AND col2 is not null AND. Update with a common table expression With CTE as It depend on what you mean exactly by 'everything that is not null': all columns must not be null. Questions should include code examples, table structure, sample data, and a tag for. Inner join Product_Bak P2 on p1.id = P2.idĢ. Structured Query Language (SQL) is a language for querying databases. Sample table structure is below and will update from Product_BAK to Product table. For almost a decade, Stack Overflow’s annual Developer Survey held the honor of being the largest survey of people who code around the world. If the source table is on the many side of a one-to-many join then it is undeterministic which of the possible matching joined records will be used in the Update (an issue that MERGE avoids by raising an error if there is an attempt to update the same row more than once).Ĭonsolidating all the different approaches here. ![]() Then you can just select value - valueprev from that select and get your answer. FROM syntax shown in four of the other answers. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. You can use the following funtion to get current row value and previous row value: SELECT value, min (value) over (order by id rows between 1 preceding and 1 preceding) as valueprev FROM table. Our products and tools empower people to find what they need to develop technology at work or at home. Were best known for our public Q&A platform that over 100 million people visit every month to ask questions, learn, and share technical knowledge. This also has the same limitation as the proprietary UPDATE. Stack Overflow helps people find the answers they need, when they need them. This has the benefit that it is easy to run the SELECT statement on its own first to sanity check the results, but it does requires you to alias the columns as above if they are named the same in source and target tables. Use this tag for all Microsoft SQL Server editions including Compact, Express, Azure, Fast-track, APS (formerly PDW) and Azure SQL DW. *Where clause added to exclude rows that are the same in both tables Newest 'sql-server' Questions - Stack Overflow Questions tagged sql-server Ask Question Microsoft SQL Server is a relational database management system (RDBMS). Another possibility not mentioned yet is to just chuck the SELECT statement itself into a CTE and then update the CTE. Stack Overflow RAM: 1.5 TB DB size: 2.8 TB Stack Exchange, Careers, Meta RAM: 768 GB DB size: 3.9 TB 2 redis servers RAM: 256GB Master Replica It’s a unique custom, high performance index of Stack Exchange questions. ![]()
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