Q. I have a following table :

I want results as :

Ans: At the time of interview I wasn’t easy with the answer but I wrote a query, but interviewer not satisfied.

I got the following proper query/solution from one of my colleagues Mr. sandeep Walia:

declare @tbl table(university varchar(100),Utotals int, status varchar(100),statuscnt int)

insert into @tbl(university,Utotals,status,statuscnt)

select ‘u1′,100,’pending’,20

union all

select ‘u1′,100,’Active’,20

union all

select ‘u1′,100,’Deferred’,60

union all

select ‘u2′,60,’pending’,20

union all

select ‘u2′,60,’Active’,20

union all

select ‘u2′,60,’Deferred’,20

select * from @tbl;

with cte as (

SELECT ROW_NUMBER() OVER(PARTITION BY university ORDER BY university DESC) AS RowID,

*

FROM @tbl

)

SELECT case when rowid=1 then university else null end university,case when rowid=1 then Utotals else null end Utotals,status,statuscnt

FROM cte

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declare @tt table(col1 varchar(10), joinexp varchar(100))

insert into @tt

select ‘c1′,’join table2 on table1.id = table1.id’

union all

select ‘c2′,’join table3 on table2.id = table1.id’

union all

select ‘c3′,’join table4 on table3.id = table1.id’

union all

select ‘c4′,’join table5 on table5.id = table1.id’

union all

select ‘c5′,NULL

union all

select ‘c6′,NULL

declare @str varchar(1000)

set @str = ‘Select c1,c4,c5,c8,c9 from table1′

declare @tt table(col1 varchar(10), joinexp varchar(100))insert into @ttselect ‘c1′,’join table2 on table1.id = table1.id’union allselect ‘c2′,’join table3 on table2.id = table1.id’union allselect ‘c3′,’join table4 on table3.id = table1.id’union allselect ‘c4′,’join table5 on table5.id = table1.id’union allselect ‘c5′,NULLunion allselect ‘c6′,NULL
declare @str varchar(1000)set @str = ‘Select c1,c4,c5,c8,c9 from table1′

Now, in above create dynamic query with dynamic join with the subsequent column from C1,c4 etc.

Ans: Select @str = @str + space(1) + joinexp

from @tt

where CharIndex(col1,@str) > 0 and joinexp <>”

Select @str

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declare @dt datetime

set @dt=’1/1/2010′ –Want to know January’s Last Monday Date

SELECT dateadd(d,-datepart(dw,DATEADD(d, -datepart(d,dateadd(mm,1,@dt)),dateadd(mm,1,@dt))-1)+1,DATEADD(d, -datepart(d,dateadd(mm,1,@dt)),dateadd(mm,1,@dt)))

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use following query:

Select CAST(DAY(GETDATE()) AS VARCHAR(2)) + ‘/’ + CAST(MONTH(GETDATE()) AS VARCHAR(2)) + ‘/ ‘ + CAST(YEAR(GETDATE()) AS VARCHAR(4)) AS DATE

Result will be : in mm/dd/yyy

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ex:

Create Table newTable (id VarChar(10))

Insert Into newTable Select id from oldTable

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