November 19, 2008 01:22am pst

1. angelIII 1,160,445
2. capricorn1 461,410
3. ee_rlee 460,453
4. chapmandew 450,372
5. mark_wills 406,764
6. mwvisa1 374,386
7. matthews... 329,136
8. BrandonG... 250,842
9. sdstuber 211,071
10. aneeshatti... 199,296
11. Thomasian 172,890
12. jinesh_ka... 168,681
13. peter57r 165,410
14. jimhorn 152,525
15. DatabaseMX 146,119
16. boag2000 130,797
17. dqmq 125,784
18. DanielWilson 119,398
19. harfang 116,222
20. frankytee 113,116
21. hielo 111,250
22. GRayL 109,743
23. LSMCons... 106,214
24. ScottPletc... 96,930
25. cactus_d... 91,346

1. angelIII 1,905,778
2. capricorn1 795,522
3. matthews... 619,047
4. ee_rlee 460,453
5. chapmandew 450,372
6. aneeshatti... 410,003
7. mark_wills 406,764
8. mwvisa1 374,386
9. peter57r 265,439
10. DatabaseMX 255,191
11. BrandonG... 250,842
12. dqmq 249,049
13. sdstuber 243,569
14. jimhorn 233,045
15. harfang 227,002
16. imitchie 215,974
17. GRayL 215,574
18. jinesh_ka... 184,970
19. DanielWilson 178,773
20. Thomasian 172,890
21. frankytee 163,364
22. Lowfatsp... 152,817
23. ScottPletc... 150,035
24. mbizup 148,647
25. LSMCons... 147,429

03.10.2008 at 10:00AM PDT, ID: 23229064

	[x] Attachment Details

[x]

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9.5

Basic SQL Sproc Question

Asked by glebn in SQL Query Syntax, MS SQL Server, SQL Server 2005

I'm pretty experience with writing SQL expressions for ad hoc queries and views, but my knowledge for sprocs and functions is limited. I working with Microsoft SQL Server 2005.

Here's my question:

I want to pass two arguments to a sproc: RecordID and Flag where Flag is a boolean value. If flag is true I want one WHERE clause, if Flag is false I want a different WHERE clause. I've attached code which shows a simplified form of the approach I'm using. Note that the actual code is much more complex, but the important point is that I want fundamentally different WHERE clauses depending on the value of @Flag. While this works it is not elegant IMHO has it repeats the SELECT and FROM clauses verbatim. Rather than having to copy the entire SQL statement as shown in my code example, I would prefer a solution that looked more like this:

DECLARE @WHEREClause varchar(1000)
If @Flag = 'True'
@WHEREClause = '<something>'
ELSE
@WHEREClause = '<somethingelse>'
END

SELECT t.*
FROM [dbo].[mytable] as t
WHERE @WHEREClause

However, this approach produces the error "An expression of non-boolean type specified in a context where a condition is expected". Is there any other approach that will allow me to have one SELECT and one FROM statement in my sproc and supply the WHERE clause as a string variable?

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             CREATE PROCEDURE [dbo].[spMySproc]
  (
    @RecordID int,
    @Flag bit
  )
 
AS
 
IF @Flag = 'True'
  BEGIN
    SELECT t.*
    FROM [dbo].[mytable] as t
    WHERE (t.RecordID = @RecordID) AND (t.field1 = 'True')
  END
 
IF @Flag = 'False'
  BEGIN
    SELECT t.*
    FROM [dbo].[mytable] as t
    WHERE (t.RecordID = @RecordID) AND (t.field2 = 'True')
  END

           
         

Keywords: Basic SQL Sproc Question

	Title
1	SPROC SQL parameters
2	fORMATTING sproc
3	Check if row exists in table
4	SPROC
5	SPROC
6	Format Date and Time as yyyy-mm-d…

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20081112-EE-VQP-43 / EE_QW_EXPERT_20070906

Basic SQL Sproc Question

Asked by glebn in SQL Query Syntax, MS SQL Server, SQL Server 2005

About this solution