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SQL and stored procedures
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Semikolon View Drop Down
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Points: 1718 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Semikolon Quote  Post ReplyReply Direct Link To This Post Topic: SQL and stored procedures
    Posted: 17 February 2004 at 4:07pm

yo.. when using simple SQL statements like this


strSQL = "SELECT " & strDbTable & "SubCategories.* FROM " & strDbTable & "SubCategories "
strSQL = strSQL & "WHERE " & strDbTable & "SubCategories.Category_ID = " & lngCategoryID & " "
strSQL = strSQL & "ORDER BY " & strDbTable & "SubCategories.Sub_category_name DESC"

is there any need for Stored Procedures then? does it make any difference on performance (and other things)?



Edited by Semikolon
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Gullanian View Drop Down
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Points: 4373 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gullanian Quote  Post ReplyReply Direct Link To This Post Posted: 17 February 2004 at 4:11pm
Stored procedures (SP) are more secure (dont ask me why) and they execute faster on the database.  SP syntax is very simple to learn, and just adds that edge to your software.  Not necessary, probably wont even notice a difference with them but might as well have them imo.
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Gullanian View Drop Down
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Points: 4373 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gullanian Quote  Post ReplyReply Direct Link To This Post Posted: 17 February 2004 at 4:13pm

Some info on SP: http://www.4guysfromrolla.com/webtech/sqlguru/q120899-2.shtm l

 
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Mart View Drop Down
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Points: 2304 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mart Quote  Post ReplyReply Direct Link To This Post Posted: 17 February 2004 at 4:19pm

SP's are precompiled so they perform better, all you have to do is

CREATE PROCEDURE [name]

(

[params]

)

AS

[query]
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michael View Drop Down
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Points: 4670 		Post Options Post Options   Thanks (0) Thanks(0)   Quote michael Quote  Post ReplyReply Direct Link To This Post Posted: 17 February 2004 at 4:48pm
The main reason that they are fast is not necessarily because they are pre-compiled but because SQL has a and execution plan for it which may improve performance.
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Semikolon View Drop Down
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Points: 1718 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Semikolon Quote  Post ReplyReply Direct Link To This Post Posted: 17 February 2004 at 4:54pm

(I know how to use Stored Procedures)

so theres no BIG differences between SQL query in the code and Stored Procedures on queries like that?

the reason why i ask this is that its twice as much work when changing an SQL statement if making a script for both access and SQL server if i use stored procedures

 

for me it sounds ineffective with stored procedures (first call them from the script, then query the table(s) and send it back to the script instead of a direct call to the table(s)) but that may be me...

 

but thanks for ya help guys i appreciate it
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Mart View Drop Down
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Points: 2304 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mart Quote  Post ReplyReply Direct Link To This Post Posted: 17 February 2004 at 4:59pm

For long quries like that you should use an sp, for one reason it will make your code look neater. It will also have performance advantages beacuse their precompiled and as Michael said:

Originally posted by michael michael wrote:

SQL has a and execution plan for it which may improve performance.

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