SQL – Page 1444 – SQL Questions Answer

MYSQL query for first 40 records and else records

I have a table names ‘tbl_featured_professional’ where fields are: id, user_id, ranking and score, createdDate What I want is first 40 records are ordered from ranking (which is unique) and all …

How to create a constraint for conditional unique values?

check-constraints constraints sql sql-server unique-constraint

I am using SQL Server. I have this table: CREATE TABLE Student ( ID int PRIMARY KEY, FirstName varchar(100), LastName varchar(100), Active bit; ) I want to have unique(FirstName, …

If else using case for returning value

sql sql-server

I am trying to do an if else statement using CASE. If no records, then make it 0 then +1. Or else, just take the last record then +1. At first try i used ISNULL(statement,0). But it doesn’t have else …

How to select rows from table where group does not contain value

mysql sql

I have a table that contains the following fields: Thedate,Thetime,Course,OR,L1R,L2R,L3R I would like to only return values if a group (Thetime) does not contain the value “0” in L3Ra column. I …

Multiple CTE where clauses referece CTW column

sql sql-server sql-server-2012 tsql

For example WITH UserDetail (UserId, UserName) AS ( SELECT TOP(10) U.UserId,U.UserName FROM UserTable U ), UserAction (ActionName,ActionType) AS ( SELECT TOP(10) A.ActionName,A….

Understanding where clause vs join

db2 join sql

Can somebody explain the difference between below query examples. select column1,column2 from table1 join table2 on table1.columna = table2.columna and columna=’1234′ vs select column1,…

`?` placeholder for SQL `IN` condition with persistent’s `rawSql`

haskell persistent rawsql sql yesod

I would be happy to use ? placeholder to populate ids for SQL IN clause. Unfortunately the following does not work Such code results in database error similar to: Wrapping ? placeholder with brackets (e.g. IN (?)) gives another type of error: Is there a way to accomplish this? P.S. Looks like it’s a hor…