July 25, 2013 at 12:34 pm
Hey guys -
It's become my job to decipher dozens (prob close to 100) of SPs written by a dozen different developers. Of course nothing is documented and that's where I come in.
One SP has these couple of lines.....
IF EXISTS(SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_NAME = 'TableA')
DROP TABLE TableA
Select Distinct FieldNameA
Into TableA
from TableB
Insert Into TableA(FieldNameA)
Values ('* All')
OK. So it seems Table A is dropped, recreated with fresh daily data and then repopulated with Distinct values from Table B.
But what does the bolded text do??
July 25, 2013 at 1:02 pm
RedBirdOBX (7/25/2013)
Hey guys -It's become my job to decipher dozens (prob close to 100) of SPs written by a dozen different developers. Of course nothing is documented and that's where I come in.
One SP has these couple of lines.....
IF EXISTS(SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_NAME = 'TableA')
DROP TABLE TableA
Select Distinct FieldNameA
Into TableA
from TableB
Insert Into TableA(FieldNameA)
Values ('* All')
OK. So it seems Table A is dropped, recreated with fresh daily data and then repopulated with Distinct values from Table B.
But what does the bolded text do??
Ready for a facepalm moment? It inserts a row into TableA. The only value is for the column FieldNameA and the value is '* All'. This is only a string, nothing special about it all.
create table #TableA(FieldNameA varchar(10))
Insert Into #TableA(FieldNameA)
Values ('* All')
select * from #TableA
_______________________________________________________________
Need help? Help us help you.
Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.
Need to split a string? Try Jeff Modens splitter http://www.sqlservercentral.com/articles/Tally+Table/72993/.
Cross Tabs and Pivots, Part 1 – Converting Rows to Columns - http://www.sqlservercentral.com/articles/T-SQL/63681/
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs - http://www.sqlservercentral.com/articles/Crosstab/65048/
Understanding and Using APPLY (Part 1) - http://www.sqlservercentral.com/articles/APPLY/69953/
Understanding and Using APPLY (Part 2) - http://www.sqlservercentral.com/articles/APPLY/69954/
July 25, 2013 at 1:12 pm
Hahaha.
OK. I need a break from this. It's a literal string! Haha.
I thought it was some clever Union or something.:-D
Viewing 3 posts - 1 through 2 (of 2 total)
You must be logged in to reply to this topic. Login to reply