Sql query to change not null to null

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  http://weblogs.sqlteam.com/jeffs/archive/2007/09/27/sql-nullif-function.aspx
Does anyone else have any other handy uses for NULLIF() that you've come across in your experience? see also: Some SELECTs will never return 0 rows -- regardless of the criteria By The Way ... Also remember that SQL ignores trailing spaces when comparing strings, so even if the string isn't empty but it contains all spaces, it will still return NULL

  http://sqlmag.com/database-administration/15-steps-convert-access-data-sql-server
Manually creating the table in SQL Server wasn't hard, but took a few tries since the field types are a little different from Access and I didn't know that fields types (or identity fields) can't be set or changed once the table is saved in SQL Server 6.5. If you let the wizard place the timestamps, you must do more advanced bcp formatting so SQL Server knows how to map the fields from the text file to the database fields

SQL Tutorial - Learn SQL Query Programming Language

  http://www.1keydata.com/sql/sql.html
This SQL programming help site lists commonly-used SQL statements, and is divided into the following sections: SQL Commands: Basic SQL statements for storing, retrieving, and manipulating data in a relational database. My experience is that understanding the basics of SQL is much easier than mastering all the intricacies of this database language, and I hope you will reach the same conclusion as well

  http://blog.sqlauthority.com/2010/02/21/sql-server-if-existsselect-null-from-table-vs-if-existsselect-1-from-table/
Uh! I almost felt like going back in time some ten years when I was writing kernel drivers for Windows :) This is excellent participation from experts like Marko and Brian. Is it better write a function Drop table and and pass table name as parameter to do this? In my opinion, I think it is expensive to go to a function from a stored procedure just to drop a table

  http://blog.sqlauthority.com/2013/04/09/sql-server-fix-error-217-implicit-conversion-from-data-type-datetime-to-int-is-not-allowed-use-the-convert-function-to-run-this-query/
Here is the complete error I received when I had used ISNULL function to int value and in case of the null value, I wanted to display current date time. Fill in your details below or click an icon to log in: Email (required) (Address never made public) Name (required) Website You are commenting using your WordPress.com account

SQL Query - How to remove null and replace with blank - Stack Overflow

  http://stackoverflow.com/questions/10696173/sql-query-how-to-remove-null-and-replace-with-blank
Out of the box SQL Developer only connect to Oracle DBs and MS Access ?? And finally to answer your actual question the NVL function substitutes null vales with the second parameter passed to it