Updating multiple columns in sql server 2016
For any SQL Server Performance Tuning Issue send email at [email protected] is also a Cross Fit Level 1 Trainer (CF-L1) and Cross Fit Level 2 Trainer (CF-L2).We want to retrieve data from the table and load it into another table, but we want to choose the maximum date from Update By App1Date, Update By App2Date, Update By App3Date as the Last Update Date in the new table.SQL Server allows us to solve this task in different ways and in this tip we will illustrate these solutions and compare performance.TOP ( ) Specifies one or more table hints that are allowed for a target table. @Note When referencing the Unicode character data types nchar, nvarchar, and ntext, 'expression' should be prefixed with the capital letter ' N'.If ' N' is not specified, SQL Server converts the string to the code page that corresponds to the default collation of the database or column.
Might be even simpler if you're modifying a predictable set of columns, and you query sys.columns to build the basic strings. He has authored 11 SQL Server database books, 21 Pluralsight courses and has written over 4000 articles on the database technology on his blog at a https://blog.Along with 16 years of hands on experience he holds a Masters of Science degree and a number of database certifications.The SQL Server (Transact-SQL) UPDATE statement is used to update existing records in a table in a SQL Server database.