Updating field from one table to another sql

Posted by / 25-Jan-2021 15:46

When you look at this it looks very simple but when we try to think the solution, I have seen developers coming up with many different solutions for example sometime they write cursor, table variables, local variables etc.

However, the easiest and the most clean way is to use JOIN clause in the UPDATE statement and use multiple tables in the UPDATE statement and do the task.

Please note that it will be very hard to practice these statements unless we switch off the following feature of Workbench.

We can expand the Edit tab from the Main Menu and opt for “Preferences”.

This means if you have already used COMMIT 10 times, ROLLBACK will have an effect on the last execution you have performed.

One can always make a simple mistake that could result in the loss of a large amount of data. One last thing – to properly switch off the safe updates, reconnection to the database is required. It is used to update the values of existing records in a table.

So, let’s exit this connection and then reconnect, typing the password once again! In the previous post about SQL INSERT Statement, we inserted an employee under the number of 9-9-9-9-0-1, remember? The syntax to adhere to is UPDATE table name, the keyword SET, column names and the respective values assigned to them, and finally – WHERE, and a certain condition, or set of conditions, that must be satisfied.

He has authored 11 SQL Server database books, 23 Pluralsight courses and has written over 4700 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.

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