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What is this SQL data cleaning tutorial all about?

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We can clear the table contents in SQL using two ways. One of the ways of doing so is to use the data definition language command named TRUNCATE that deletes all the records present in the particular table that exists in our SQL database server.

What is SP_clean_DB_free_space in SQL Server?

  • sp_clean_db_free_space (Transact-SQL) Removes residual information left on database pages because of data modification routines in SQL Server. sp_clean_db_free_space cleans all pages in all files of the database.

How do I use the database cleanup feature?

  • To use the database cleanup feature, follow these steps: In the project tree, right click on the data warehouse, click on Advanced and click on SQL Database Cleanup Wizard. In the SQL Database Cleanup window, the content of the database is listed. Expand Project Objects to display a list of Object IDs in the project.

How to clear the contents of the table in SQL Server?

  • We can clear the contents of the table by using the delete command which is one of SQL command of the set of the data manipulation language commands that are available in SQL. This command is most often used to delete the selected rows present in the table. Syntax of Delete Command: DELETE FROM name_of_table;

How to clean up the data in SQL Server?How to clean up the data in SQL Server?

If you need to clean up data, you can use the UPDATE statement with the TRIM function to remove all unwanted characters from the database especially the spaces. For example, the following statement removes all leading and trailing spaces in the first_name, last_name, email, and phone_number columns of the employees table.

How to use the database cleanup feature in JDM?How to use the database cleanup feature in JDM?

To use the database cleanup feature, follow these steps: In the project tree, right click on the data warehouse, click on Advanced and click on SQL Database Cleanup Wizard. The JDM will read the objects from the database and open the SQL Database Cleanup window. In the SQL Database Cleanup window, the content of the database is listed.

How to clear the contents of the table in SQL Server?How to clear the contents of the table in SQL Server?

We can clear the contents of the table by using the delete command which is one of SQL command of the set of the data manipulation language commands that are available in SQL. This command is most often used to delete the selected rows present in the table. Syntax of Delete Command: DELETE FROM name_of_table;

How do I clear the cache in SQL Server?How do I clear the cache in SQL Server?

Flush the ad hoc and prepared plan cache for the entire server instance. Clear all table variables and temp tables cached. Clear for a specific user database. Remove the tempdb cache. Flushes the distributed query connection cache used by distributed queries against an instance of SQL Server.

image-What is this SQL data cleaning tutorial all about?
image-What is this SQL data cleaning tutorial all about?
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