Join unique ID's from another table - sql

Question

Here is the story: I have to implement filter. And in this filter there are certain categories I filter by.
One of the filters is "favourite" filter (#includeFavourites ).
I have this huge SQL with paging and sorting and everything.
Now, when "includeFavourites" option in filter is clicked, then I also have to select unique ID's from different table (this entries are stored in different datatable), where favourites are stored.
I have tried left outer join, but it returns "number of favourites" records for each record in primary table. Coalesce didn't help at all.
Here is my SQL:
--this is needed because stored procedure must know how many days are selected
DECLARE #daysCount int
SET #daysCount = 0
IF (#mon IS NOT NULL)
BEGIN
SET #daysCount = #daysCount+1
END
IF (#tue IS NOT NULL)
BEGIN
SET #daysCount = #daysCount+1
END
IF (#wed IS NOT NULL)
BEGIN
SET #daysCount = #daysCount+1
END
IF (#thu IS NOT NULL)
BEGIN
SET #daysCount = #daysCount+1
END
IF (#fri IS NOT NULL)
BEGIN
SET #daysCount = #daysCount+1
END
IF (#sat IS NOT NULL)
BEGIN
SET #daysCount = #daysCount+1
END
IF (#sun IS NOT NULL)
BEGIN
SET #daysCount = #daysCount+1
END
-- Insert statements for procedure here
SELECT * FROM (
SELECT ROW_NUMBER() OVER
(
ORDER BY
CASE WHEN #OrderBy = 'ND' THEN title END DESC,
CASE WHEN #OrderBy = 'NA' THEN title END,
CASE WHEN #OrderBy = '' THEN title END,
CASE WHEN #OrderBy = 'RD' THEN authorRating END DESC,
CASE WHEN #OrderBy = 'RA' THEN authorRating
) AS Row,
Articles.ArticleId, Articles.userId, Articles.timestamp as datePosted, users.screenName,
defaultSmallImagePath, authorRating, ArticleCosts, title,
FROM Articles
LEFT OUTER JOIN
Users on Articles.userId = Users.userId
LEFT OUTER JOIN
ArticleAdditionalInformation ON ArticleAdditionalInformation.ArticleId = Articles.ArticleId
--JOIN FOR CONTINENT
LEFT OUTER JOIN
Codings as Continent ON Continent.codingKeyId = ArticleAdditionalInformation.continentId AND Continent.languageId = #languageId
-- JOIN FOR COUNTRY
LEFT OUTER JOIN
CodingsAssociated as Country ON Country.codingKeyId = ArticleAdditionalInformation.countryId AND Country.languageId = #languageId
-- JOIN FOR Article TRANSLATION DATA
LEFT OUTER JOIN
ArticlesTranslations ON ArticlesTranslations.ArticleId = Articles.ArticleId AND ArticlesTranslations.languageId=#languageId
LEFT OUTER JOIN
ArticleCategories ON ArticleCategories.ArticleId = Articles.ArticleId
WHERE
(
ArticleCategories.categorieId =1 OR ArticleCategories.categorieId =2 OR
ArticleCategories.categorieId =3 OR ArticleCategories.categorieId =4 OR
ArticleCategories.categorieId = 5
) AND
(ArticlesTranslations.title LIKE '%' + #searchString + '%' OR #searchString IS NULL)
-- COST filter
AND
(ArticleCosts < #cost OR #cost = 0)
AND
(ArticleCosts > 0 OR #cost = 0)
--END cost filter
-- EXCLUDE already stored for selected days
AND Articles.ArticleId -- exclude these ArticleIds
NOT IN
(
SELECT DailyContent.ArticleId
FROM DailyContent
WHERE
sectionId=#sectionId AND
(
weekDayId=#mon OR
weekDayId=#tue OR
weekDayId=#wed OR
weekDayId=#thu OR
weekDayId=#fri OR
weekDayId=#sat OR
weekDayId=#sun
)
GROUP BY
DailyContent.ArticleId
HAVING
(COUNT(sectionId) = #daysCount)
)
-- END exclude
) p
WHERE (Row > #startRowIndex AND Row <=#startRowIndex + #pageSize)
ORDER BY Row
END
So, I would only like to include unique articleIds from favourite table, when #includeFavourites parameter is not null.
Any hint would be greatly appreciated ;)
I am using SQL server 2008.

Answer 1

Try this one -
DECLARE #daysCount INT
SELECT #daysCount =
ISNULL(#mon, 0) + -- if #mon = 1, #tue = 2, .... 1 + (2-1)=1 + (3-2)=1 + ...
ISNULL(#tue - 1, 0) +
ISNULL(#wed - 2, 0) +
ISNULL(#thu - 3, 0) +
ISNULL(#fri - 4, 0) +
ISNULL(#sat - 5, 0) +
ISNULL(#sun - 6, 0)
SELECT *
FROM (
SELECT ROW_NUMBER() OVER
(
ORDER BY
CASE WHEN #OrderBy = 'ND' THEN title END DESC,
CASE WHEN #OrderBy IN ('NA', '') THEN title END,
CASE WHEN #OrderBy = 'RD' THEN authorRating END DESC,
CASE WHEN #OrderBy = 'RA' THEN authorRating
) AS [Row]
, a.ArticleId
, a.userId
, a.[timestamp] as datePosted
, u.screenName
, defaultSmallImagePath
, authorRating
, ArticleCosts
, title
FROM dbo.Articles a -- always use schema and alias
LEFT JOIN dbo.Users u on a.userId = u.userId -- OUTER is unnecessary
LEFT JOIN dbo.ArticleAdditionalInformation aai ON aai.ArticleId = a.ArticleId
LEFT JOIN dbo.Codings cd ON cd.codingKeyId = aai.continentId AND cd.languageId = #languageId
LEFT JOIN dbo.CodingsAssociated c ON c.codingKeyId = aai.countryId AND c.languageId = #languageId
LEFT JOIN dbo.ArticlesTranslations at ON at.ArticleId = a.ArticleId AND at.languageId = #languageId
LEFT JOIN dbo.ArticleCategories ac ON ac.ArticleId = a.ArticleId
WHERE ac.categorieId IN (1, 2, 3, 4, 5)
AND (
at.title LIKE '%' + #searchString + '%'
OR
#searchString IS NULL
)
AND (ArticleCosts < #cost OR #cost = 0)
AND (ArticleCosts > 0 OR #cost = 0)
AND a.ArticleId NOT IN (
SELECT dc2.ArticleId
FROM dbo.DailyContent dc2
WHERE sectionId = #sectionId
AND (
weekDayId % #daysCount = 0 -- possible it's works
--weekDayId = #mon OR
--weekDayId = #tue OR
--weekDayId = #wed OR
--weekDayId = #thu OR
--weekDayId = #fri OR
--weekDayId = #sat OR
--weekDayId = #sun
)
GROUP BY dc2.ArticleId
HAVING COUNT(sectionId) = #daysCount
)
) p
WHERE [Row] BETWEEN #startRowIndex AND #startRowIndex + #pageSize
--ORDER BY [Row] -- ROW_COUNT already sorted your rows