Finidng the missing segments and return to the output

Question

Hello All,
I am working on finding the missing segments which doesn't have a code value. I have 2 tables, Line and Code.
In the line table I have below columns
Line_ID                  BeginMeasure                   EndMeasure
1                                0                                     
100
2                                0                                     
200
3                                0                                      300
In the code table I may have multiple records for each line
Line_ID                       BeginMeasure                 
EndMeasure                   code
1                                  12                                   
30                                    3
1                                   40                                  
50                                    4
2                                  0                                     
150                                  6
3                                  30                                   
300                                  8
Here I need to find out the segments which doesn't have a code value. For example, for Line_ID 1 in the code table we dont have a value for the code for 0 -12, 30 - 40 and 50 - 100 segments and for Line_ID 2, we dont have code for 150 - 200 segment.
I want the  records which doesn't have code value defined in the output result set and the expected result set should be like below
Line_ID                           BeginMeasure                    
EndMeasure
1                                        0                                           
12
1                                        30                                         
40
1                                        50                                          
100
2                                       150                                         
200
3                                         0                                            
30
Any code suggestions/help is greatly appreciated.
Thanks so much

Answer 1

Declare @vLine Table (id int, BM int, EM int)
Declare @vCode Table (id int, LineID int, BM int, EM int, code int)
Insert into @vLine
Select 1,0,100 Union All
Select 2,0,200 Union All
Select 3,0,300
Insert into @vCode
Select 1,1,12,30,3 Union All
Select 2,1,40,50,4 Union All
Select 3,2,0,150,4 Union All
Select 4,3,30,300,4
--;with wcte as
-- Select *
-- from @vLine a
-- Inner Join @vCode b on b.id = a.id
Select a.ID, a.BM, a.EM,b.BM,b.EM,b.code
from @vLine a
Inner Join @vCode b on b.LineID = a.id -- 1
Declare @vLineID int
Declare @vCodeID int
Declare @vInsertedID int
Declare @vLineMaxVal int, @vLineMinVal int, @vCodeMaxval int, @vCodeMinVal int, @vCodeInt int
Declare C1 Cursor for
Select a.ID, a.BM, a.EM,b.BM,b.EM,b.code
from @vLine a
Inner Join @vCode b on b.LineID = a.id -- 1
--Where a.ID = 2
open C1
Fetch Next from C1 into @vLineID, @vLineMinVal , @vLineMaxVal , @vCodeMinval , @vCodeMaxVal , @vCodeInt
Declare @vResult Table (ID int IDENTITY(1,1), LineID int, MissVal1 int, MissVal2 int)
Set @vCodeID = @vLineID
While @@Fetch_Status = 0
begin
print @vCodeID
print @vLineID
While @vCodeID = @vLineID and @@FETCH_STATUS = 0
begin
--Select @vCodeMinVal , @vLineMinVal
if @vCodeMinVal > @vLineMinVal
begin
if Exists (Select 1 from @vResult where LineID = @vLineID and MissVal2 = @vLineMaxVal)
begin
Update @vResult
Set MissVal2 = @vCodeMinVal
where LineID = @vLineID and MissVal2 = @vLineMaxVal
end
else
begin
Insert into @vResult
Select @vLineID, @vLineMinVal, @vCodeMinVal
Select @vInsertedID = SCOPE_IDENTITY()
end
end
if @vLineMaxVal > @vCodeMaxval
begin
Insert into @vResult
Select @vLineID, @vCodeMaxVal, @vLineMaxVal
Select @vInsertedID = SCOPE_IDENTITY()
end
Fetch Next from C1 into @vLineID, @vLineMinVal , @vLineMaxVal , @vCodeMinval , @vCodeMaxVal , @vCodeInt
print @vCodeID
print @vLineID
if @vCodeID <> @vLineID
BREAK
end
Set @vCodeID = @vLineID
--Fetch Next from C1 into @vLineID, @vLineMaxVal , @vLineMinVal , @vCodeMaxval , @vCodeMinVal , @vCodeInt
end
Deallocate C1
Select * from @vResult
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