Differences between revisions 4 and 6 (spanning 2 versions)
⇤ ← Revision 4 as of 2005-06-01 14:20:56 →
Size: 401
Editor: SimonHuggins
Comment:
← Revision 6 as of 2005-06-10 02:52:24 → ⇥
Size: 454
Editor: 60
Comment:
Deletions are marked like this. Additions are marked like this.
Line 3: Line 3:
CategoryComputingTips > SQLCompTips CategoryComputingTips > SQLComp''''''Tips
Line 18: Line 18:
http://www.yipu.com.cn/shangjia/info7.html

CategoryComputingTips > SQLCompTips

SQL Tips

This is more a collection of recipes than tips I guess.

Using substring and a sub select

SELECT COUNT(substring),substring FROM ( 
 SELECT SUBSTRING(domainname FROM POSITION('.' in domainname)) FROM orders WHERE type=1) AS foo
 GROUP BY substring;

Group and count domain extensions. http://www.yipu.com.cn/shangjia/info7.html

TheEarthWiki: SQLCompTips (last edited 2008-02-19 15:39:15 by localhost)