Convert WHERE logic to SQL statement - sql

Question

Can someone help me transform the following code to raw SQL statement?
(NOT to Dynamic SQL)
Dim blnAllow as Boolean = True
Dim intType as Int32 = 35
.Append("SELECT * FROM TABLE1 WHERE NAME='AAA' ")
Select Case intType
Case 35
.Append("AND (Type IN (2,4) OR type=8) ")
.Append("AND [use]=1 ")
Case 34
If blnAllow = True Then
.Append("AND (Type IN (2,4) OR (type=8 and Col1 > 0 )) ")
Else
.Append("AND (Type IN (2,4)) ")
End If
.Append(" AND [use]=1 ")
Case Else
.Append("AND Type=1")
End Select

Answer 1

Well since intType is defined as 35, only the Case 35 section applies...
select * from TABLE1 where [NAME]='AAA'
and [Type] in (2,4,8)
and [use] = 1
If you want to encapsulate those other cases, you'll have to explain where intType fits in.. or do you just want 3 separate queries?

Answer 2

How about something like this
SELECT *
FROM TABLE1 WHERE NAME='AAA'
AND (
(
intType = 35
AND (Type IN (2,4) OR type=8)
AND [use]=1
)
OR
(
intType = 34
AND (
(
blnAllow = 'true'
AND (Type IN (2,4) OR (type=8 and Col1 > 0 ))
)
OR
(
blnAllow = 'false'
AND (Type IN (2,4))
)
)
AND [use]=1
)
OR
(
intType NOT IN (35, 34)
AND Type=1
)
)

Answer 3

The general converting pattern is
If condition Then ands1
Else ands2 End If
becomes
( (condition AND ands1) OR ((NOT condition) AND ands2) )

Answer 4

Please try this most optimized query.
select * from table where name = 'AAA' AND
(
(
((Type IN (2,4) OR type=8) OR // Case 35
(
(Type IN (2,4) OR (type=8 and Col1 > 0 )) // Case 34 and blnAllow checking
)
)
AND [use]=1 // Case 35 && 34
) OR
(Type=1) // Else
)
If the string "Type" and "type" indicates the same field, You just modifify the
//case 35 section to (Type IN (2,4) OR type=8) => (Type IN (2,4,8))

Answer 5

In MS SQL, this would look like this:
DECLARE #blnAllow BIT
SET #blnAllow = 1
DECLARE #intType INT
SET #intType = 35
SELECT *
FROM TABLE1
WHERE
NAME = 'AAA' AND
(
(#intType = 35 AND (Type IN (2,4) OR type = 8) AND [use] = 1) OR
(#intType = 34 AND [use] = 1 AND
(
(#blnAllow = 1 AND (Type IN (2,4) OR (type = 8 and Col1 > 0 ))) OR
(#blnAllow = 0 AND (Type IN (2,4)))
)) OR
(#intType not in (34, 35) AND Type = 1)
)
Don't expect query optimizer to optimize it :).

Answer 6

…
WHERE NAME = 'AAA'
AND (#intType NOT IN (34, 35) AND Type = 1
OR #intType IN (34, 35) AND [use] = 1 AND (
Type IN (2, 4)
OR #intType = 35 AND Type = 8
OR #intType = 34 AND (#blnAllow = 0 OR Type = 8 AND Col1 > 0)
)
)
It is assumed that #intType is an int parameter and #blnAllow is a bit parameter.