GROUP BY (Number_of_the_week - 1)/3

GROUP BY (Number_of_the_week - 1)/6

result_date - DATEPART (dw, result_date) + 1

This is made for @@DATEFIRST = 1 (Monday is first day of the week)

Check your server settings.

groub by DATEDIFF(ww, result_date, getdate())

getdate() may be replaced with any given date. For example, '1900-01-01 00:00'.

Anyway difference in weeks between that date and dates for all same week tasks will...

I forgot to change alias in GROUP BY for nested query.

This must work:

SELECT MAX(l.clrec_sysid), l.cons_entity_id, lm.Max_event_date

FROM tblclinical_record_master l

INNER JOIN tblcase c ON l.case_sysid = c.case_sysid

INNER JOIN (SELECT l1.cons_entity_id,MAX(l1.event_date) as Max_event_date

FROM...

If createddttm is datetime then it is not in any format.

Format is used only for date representation.

The strict rule is:

Put clustered index on the column you most often use...

Lets say that your column data type is varchar(50).

In such case it gonna be:

ORDER BY case when ISNUMERIC(ColumnName) = 1 then REPLICATE ('0', 50 - LEN(LTRIM(ColumnName))) + LTRIM(ColumnName) else ColumnName...

DECLARE @Query varchar(8000), @DBName varchar(20)

SET @DBName = 'A' -- or 'B' or 'C', it should be parameter for your SP

SET @Query = 'SELECT DISTINCT K.MAXCOM_ID FROM ' + @DBName +...

Column doc.CreatedDtTm participates in multiple joins "between ... and ..."

Is there clustered index on this column? It should be.

SELECT MAX(l.clrec_sysid), l.cons_entity_id, lm.Max_event_date

FROM tblclinical_record_master l

INNER JOIN tblcase c ON l.case_sysid = c.case_sysid

INNER JOIN (SELECT l1.cons_entity_id,MAX(l1.event_date) as Max_event_date

FROM tblclinical_record_master l1

GROUP BY l.cons_entity_id) lm on l.cons_entity_id = lm.cons_entity_id

and l.event_date = Max_event_date

WHERE...

I don't remember now where I've read it. It was not only source.

But I know that optimizer takes column name from query and searches all tables mentioned in the query...

Strange error.

Probably you forgot about quotes.

declare @StartTime dateTime

set @StartTime = '20:30'

works absolutely fine.

Using table name in column name does not make any sence.

If you want to which table this column belongs to you can write TableName.ColumnName instead of TableNameColumnName.

First option makes optimizer...

INSTEAD OF DELETE trigger is good idea.

You can also create dummy table with FK relation to PK of your table. This will block any attempt to delete rows from the...

Freaky Dutch English...

But if you have any SELECT statement in your application???

Dynamic SQL is your choice???

I've forgotten somebody uses access data by "SELECT...

Try this:

select DT.Thedate, DT.Value, DT.Value - T3.Value as Delta

FROM  (Select t1.thedate, T1.Value, max(t2.thedate) as PrevDate

           from MyTable T1

           left join MyTable T2 on t1.thedate > t2.thedate

           group by t1.thedate, T1.Value)...