TECHNOLOGIES
FORUMS
JOBS
BOOKS
EVENTS
INTERVIEWS
Live
MORE
LEARN
Training
CAREER
MEMBERS
VIDEOS
NEWS
BLOGS
Sign Up
Login
No unread comment.
View All Comments
No unread message.
View All Messages
No unread notification.
View All Notifications
Answers
Post
An Article
A Blog
A News
A Video
An EBook
An Interview Question
Ask Question
Forums
Monthly Leaders
Forum guidelines
Danish Habib
NA
694
244.2k
incorrect Result set of a simple SQL Query
Jan 22 2015 3:16 AM
I Have five tables
first table (users)
Users(userid(P),UserName,Email,Password,DistrictID)
UserAndDistricts(DistrictID(P),DistrictName,UserID(F))
UserAndTehsils(TehsilID(P),TEhsilName,UserID(F))
UserAndUcs(UCID(P),UCName,UserID(F))
UserAndVillage(VillageID(P),VillageName,UserID(F))
I have 12 user into the user table
i have one record in district table mean all user belong to one district
I have three records in tehsil table I have three tehsil and all user belong to that
I have 25 rows in ucs table
I have 83 Rows in village table
all table are saving the user id as well as foreign key but when i am using the below query it gives me 4150 rows why duplicating so much data
SELECT U.UserId,U.[Address],U.City,u.Country,UT.TehsilId,UC.UCID ,UC.UCName,UV.VillageId ,UV.VillageName ,UT.TehsilName,U.DistrictId,UD.DistrictName ,UD.DistrictId ,UD.UserId,U.FullName,U.IPAddress,U.IsActive,U.IsAdmin,U.IsPasswordReset,U.IsReportable,U.IsVisible,U.CreateDate ,U.Mobile,U.Password,U.ReporintPerson,U.SecurityAnswer,U.SecurityQuestion ,U.UserId,U.Email,U.UserTypes FROM Users U
RIGHT JOIN UserDistricts UD ON UD.UserId=U.UserId
LEFT OUTER JOIN UserTehsils UT ON UT.UserID=U.UserId
LEFT OUTER JOIN UserUcs UC ON UC.UserID=U.UserId
LEFT JOIN UserVillages UV ON UV.UserId=U.UserId
WHERE U.UserId =21
Reply
Answers (
20
)
SQL Server
Does Cast() and Convert() make query performance low??