T-sql change value if null

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Stack Gives Back Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Linked Related 9. Hot Network Questions. Question feed. I created a UI to let system users update the different fields like Accessories, Description,Specification.

The Update works if I update all fields with the query shown in the top. However when I Leave a textbox empty, then I get an error that the parameter is missing a value. So trying to find a solution to update only the field where is something written. I found another solution which is really close to what I want but can't get it to work.

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Create a free Team What is Teams? Learn more. Asked 8 years, 10 months ago. Active 8 years, 10 months ago. Viewed k times. I think I am somehow close to get it work, but for some reason I still get errors. Improve this question. Thanks for the ignorance: Rows are not records.

If a row is missing, the LAG will not show it, so this makes no sense. Why not be polite and follow Netiquette? CELKO, I am getting tired from your approach, and deleting your messages, which people marked as abusive! It is time to learn the meaning of rudeness! In 25 words or less it is "Logical versus Physical", but it goes beyond that. If you do not have a good conceptual model, you hit a ceiling and cannot get past a certain level of competency. A file is made up of records, records are made up of fields.

Files are independent of each other, while tables in a database are interrelated. You open an entire database, not tables; you open individual files. The original idea of a database was to collect data in a way that avoided redundant data in too many files and not have it dependent on a particular programming language. In fact, columns, rows and tables do not have to have any physical existence at all.

Look at how many times we get a posting where someone wants to sequentially read a table. A database is language independent; the internal SQL datatypes are converted into host language data types. A field exists only because of the program reading it; a column exists because it is in a table in a database. Is this page helpful? Please rate your experience Yes No. Any additional feedback? Although in earlier versions of SQL Server, the functions are referred to as global variables, functions aren't variables, and they don't have the same behaviors as variables.

The functions are system functions, and their syntax usage follows the rules for functions. You can't use variables in a view. Changes to variables aren't affected by the rollback of a transaction. In this article.