Suppose you have a table with a relatively long string and you want to search on it. An index is not an ideal solution...
since it will be very big. Here is my suggestion, which works with SQL Server 2000 only!
1. Table structure:
Create table testTable (k int identity not null, allType sql_Variant, BigStr varchar(100))
2. Add CheckSum support:
alter table testTable add cs as checksum(BigStr)
3. Create an index on the computed column:
create index idx_testTb_cs on testTable (cs)
4. Now, the select statement:
select * from testTable where cs = checksum ('cccccccccccccccccccccc') and bigStr = 'cccccccccccccccccccccc'
Note: 'ccccccccccccccccc' is an example of a given long string value.
For More Information
- What do you think about this tip? E-mail the Editor at email@example.com with your feedback.
- The Best SQL Server Web Links: tips, tutorials, scripts, and more.
- Have an SQL Server tip to offer your fellow DBA's and developers? The best tips submitted will receive a cool prize--submit your tip today!
- Ask your technical SQL Server questions--or help out your peers by answering them--in our live discussion forums.
- Check out our Ask the Experts feature: Our SQL, Database Design, Oracle, SQL Server, DB2, metadata, and data warehousing gurus are waiting to answer your toughest questions.