Topic: SQL*Plus and PL/SQL >> host variables vs bind variables
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| Title: host variables vs bind variables |
| shwets |
Posted: Jul 19, 2007 07:52:09 AM |
Total Post: 1
Joined: Aug, 2006
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hii,
can any body tell me what is the difference between host variables and bind variables
thank you. |
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 prasad |
| Posted: Jul 19, 2007 09:21:22 AM |  |
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Total Post: 35
Joined: Jan, 2007
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Hi
I dont know eaxctly the diff between bind & host variables....I just looked on the net...see if it it useful to u.
http://www.dbasupport.com/forums/showthread.php?t=9423
Thanx
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| Nehru |
| Posted: Jul 26, 2007 08:31:31 AM | |
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Total Post: 46
Joined: Jul, 2007
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Hi
HOST VARIABLES:
Host variables are the key to communication between your host program and Oracle. Typically, a precompiler program inputs data
from a host variable to Oracle, and Oracle outputs data to a host variable in the program. Oracle stores input data in
database columns, and stores output data in program host variables.
AND
BIND VARIABLES:
A host variable can be any arbitrary C expression that resolves to a scalar type. But, a host variable must also be an lvalue.
Bind variables are used in SQL and PL/SQL statements for holding
data or result sets.
They are commonly used in SQL statements to optimize statement perrformance.
A statement with a bind variable may be re-executed multiple times without needing to be re-parsed.
Their values can be set and referenced in PL/SQL blocks.
They can be referenced in SQL statements
bind variable references should be prefixed with a colon
I Know This Much
Take Care
Bye
Nehru
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