Question

I’m not sure how to resolve this error:

Procedure or Function ‘sp_executesql’ expects parameter ‘@statement’, which was not supplied.

for this query:

DECLARE @a INT  DECLARE @b VARCHAR  SET @a = 1  WHILE @a < 30 BEGIN set @b = @a   exec sp_executesql update source_temp set pmt_90_day = pmt_90_day + convert(money,'trans_total_'+@b)+N'     N'where convert(datetime,'effective_date_'+@b)+N' <= dateadd(day,90,ORSA_CHARGE_OFF_DATE)     and DRC_FLAG_'+@b = 'C'''  SET @a = @a + 1 END 

Also, can you help me understand the proper usage of N’ and if its done correctly in this statement.

Thanks for your assistance.

Answer 1

The ‘sp_executesql’ stored proc expects a single string parameter @statement to execute.

Your string is totally out of whack here….. you need to prefix any ‘fixed’ string parts with a N’……’ to make them Unicode strings, but this is definitely not properly the case here.

I think you might want to try this:

DECLARE @a INT  DECLARE @b VARCHAR(2)  SET @a = 1  DECLARE @statement NVARCHAR(500)  WHILE @a < 30 BEGIN     SET @b = CAST(@a AS VARCHAR(2))      SET @statement =          N'update source_temp set pmt_90_day = pmt_90_day + ' +               'convert(money, ''trans_total_' + @b + ''') ' +               'where convert(datetime, ''effective_date_' + @b + ''')' +              ' <= DATEADD(DAY, 90, ORSA_CHARGE_OFF_DATE) ' +              'and DRC_FLAG_' + @b + ' = ''C'''      exec sp_executesql @statement      SET @a = @a + 1 END 

Does this work and do what you expect it to do??

Explanation: the N’………’ delimits the whole string which contains the SQL statement. Any apostrophe inside that has to be duplicated (‘escaped’). I hope I understood your logic correctly.

Marc