Categories:
.NET (357)
C (330)
C++ (183)
CSS (84)
DBA (2)
General (7)
HTML (4)
Java (574)
JavaScript (106)
JSP (66)
Oracle (114)
Perl (46)
Perl (1)
PHP (1)
PL/SQL (1)
RSS (51)
Software QA (13)
SQL Server (1)
Windows (1)
XHTML (173)
Other Resources:
How To Use Subqueries with the IN Operator
How To Use Subqueries with the IN Operator? - MySQL FAQs - SQL SELECT Statements with JOIN and Subqueries
✍: FYIcenter.com
A subquery can be used with the IN operator as "expression IN (subquery)". The subquery should return a single column with one or more rows to form a list of values to be used by the IN operation. The following tutorial exercise shows you how to use a subquery with the IN operator. It returns all links with ids in the fyi_rates table.
mysql> SELECT id, url, tag, YEAR(created) As year FROM fyi_links WHERE id IN (SELECT id FROM fyi_rates); +-----+-------------------+------+------+ | id | url | tag | year | +-----+-------------------+------+------+ | 101 | dev.fyicenter.com | DEV | 2006 | | 102 | dba.fyicenter.com | DBA | 2006 | | 103 | sqa.fyicenter.com | SQA | 2006 | +-----+-------------------+------+------+ 3 rows in set (0.06 sec)
2007-05-11, 7146👍, 0💬
Popular Posts:
What is effort variance? Effort Variance = (Actual effort – Estimated Effort) / Estimated Effort.
What are the different accessibility levels defined in .NET ? Following are the five levels of acces...
What are secure and non-secure websites? A secure Website uses the Secure Socket Layer (SSL) protoco...
What will be printed as the resultof the operation below: int x; int modifyvalue() { return(x+=10); ...
What is shadowing ? When two elements in a program have same name, one of them can hide and shadow t...