SQL Stored Procedure adding to statement - sql

Question

Issue:
I want to pass a value say #Test into a stored procedure and I know that when #Test is certain values all is good. However I want to filter several values in the Table/Gridview under one #Test value.
i.e. User searches for "Red" I want to show "Red" "Pink" etc...
I am sure there must be hunderds of examples but I have searched and not found them. I have tried BEGIN and also IF statements.
If .net I would add a If #Text = 'Pink' Then
sql= sql & ... statement...
So far I have...
SELECT * FROM TblColours
WHERE
Room LIKE '%' + #sRoom + '%'
or Colours LIKE '%' + #sColours + '%'
IF #sColours = 'Pink'
or Colours = 'Red'
or Colours = 'Shade of Pink'
END

Answer 1

I agree with Andrew, that it would be much easier to store the colours and their groupings in separate tables - it might look something like the below (two new tables, #Colours and #Colourgroups are used).
-- SETUP TABLES AND VALUES
----------------------------------------------------------------------------------------------
IF OBJECT_ID('tempdb.dbo.#Colours') IS NOT NULL DROP TABLE #Colours
IF OBJECT_ID('tempdb.dbo.#TblColours') IS NOT NULL DROP TABLE #TblColours
IF OBJECT_ID('tempdb..#ColourGroups') IS NOT NULL DROP TABLE #ColourGroups
CREATE TABLE #Colours
( Id INT NOT NULL PRIMARY KEY CLUSTERED
,GroupId INT NOT NULL
,Name VARCHAR(50) NOT NULL)
CREATE TABLE #ColourGroups
( Id INT NOT NULL PRIMARY KEY CLUSTERED
,Name VARCHAR(50) NOT NULL)
CREATE TABLE #TblColours
( Room VARCHAR(50) NOT NULL
,ColourId INT NOT NULL)
INSERT #Colours
SELECT * FROM
(SELECT 1 AS Id, 1 AS GroupId, 'Red' AS Name UNION
SELECT 2 AS Id, 2 AS GroupId, 'Orange' AS Name UNION
SELECT 3 AS Id, 3 AS GroupId, 'Yellow' AS Name UNION
SELECT 4 AS Id, 1 AS GroupId, 'Pink' AS Name UNION
SELECT 5 AS Id, 1 AS GroupId, 'Scarlet' AS Name UNION
SELECT 6 AS Id, 1 AS GroupId, 'Rose' AS Name) AS SomeRandomColours
ORDER BY Id
INSERT #ColourGroups
SELECT * FROM
(SELECT 1 AS Id, 'Red' AS Name UNION
SELECT 2 AS Id, 'Orange' AS Name UNION
SELECT 3 AS Id, 'Yellow' AS Name) AS SomePossibleGroups
ORDER BY Id
INSERT #TblColours Values ('Gail''s Bedroom', 6)
INSERT #TblColours Values ('The Horrid Bathroom', 2)
INSERT #TblColours Values ('The Main DrawingRoom', 5)
INSERT #TblColours Values ('Paul and Barbara''s Bedroom', 4)
INSERT #TblColours Values ('Paul''s Study', 1)
----------------------------------------------------------------------------------------------
-- Include Derived colour working back from the group if you want to find all the colours in
-- the same group as your search.
DECLARE
#sRoom VARCHAR(50) = 'Barbara'
,#sColours VARCHAR(50) = 'Pink'
SELECT DISTINCT
Room.Room
,Colour.Name
FROM #TblColours AS Room
INNER JOIN #Colours AS Colour ON Room.ColourId = Colour.Id
INNER JOIN #ColourGroups AS ColourGroup ON Colour.GroupId = ColourGroup.Id
INNER JOIN #Colours AS DerivedColour ON ColourGroup.Id = DerivedColour.GroupId
WHERE
Room LIKE '%' + #sRoom + '%'
OR Colour.Name = #sColours
OR ColourGroup.Name = #sColours
OR DerivedColour.Name = #sColours