Skip to main content

SQL Scripts: Record Counts

As I'm populating a sample set of data in a SQL Server project, I needed a quick way of identifying what tables I had missed.

Here's what I came up with (but a much faster way is noted below using the sys tables).

--- Identifies zero record count tables
declare @vtb varchar(200)
declare @vsc varchar(200)

declare x cursor for select table_schema,table_name from information_schema.tables
open x
fetch next from x into @vsc,@vtb
declare @vcnt int
print 'declare @vcnt int'
while @@FETCH_STATUS = 0
begin
set @vcnt = 0
print 'set @vcnt = 0'
print 'select @vcnt=count(*) from ' + @vsc+'.['+@vtb + ']'
print 'if @vcnt=0 print ''' + @vsc+'.'+@vtb + ''''


fetch next from x into @vsc,@vtb
end
close x
deallocate x


Note, that the script does support the schema tag but it does expect you to already be in the database (via USE).

This generates the output into the message window where you can then take it and run it.

You could also simply pipe it to a variable and then execute that variable.

It's not fancy, but it does work so you may also find it of use.

The other approach I've seen used is one where you use the sys.indexes table.


--Code modified from original posting on SQLServerCentral.Com
--URL: http://www.sqlservercentral.com/scripts/Miscellaneous/30324/
SELECT o.name AS "Table Name", i.rowcnt AS "Row Count"
FROM sysobjects o, sysindexes i
WHERE i.id = o.id
AND indid IN(0,1)
AND xtype = 'u'
AND o.name <> 'sysdiagrams'


I have tried to stay away from the sysobjects table primarily since Microsoft doesn't advocate their use (although I can't find a posting about this), even though they are typically the fastest and easiest ways to get to real data.

Update:
Here's the similar script but using sp_spaceused to see how much space the actual tables are taking up.

declare @vtb varchar(200)
declare @vsc varchar(200)

declare x cursor for select table_schema,table_name from information_schema.tables
open x
fetch next from x into @vsc,@vtb
declare @vcnt int
print 'declare @vcnt int'
while @@FETCH_STATUS = 0
begin
set @vcnt = 0
select @vcnt = rowcnt FROM sysobjects o, sysindexes i
WHERE i.id = o.id
AND indid IN(0,1)
AND xtype = 'u'
AND o.name =@vtb
if @vcnt>50000
begin
print 'retrieving for ' + @vtb + ' rows: ' + convert(varchar(10),@vcnt)
exec sp_spaceused @vtb
end

fetch next from x into @vsc,@vtb
end
close x
deallocate x


Comments

Popular posts from this blog

FoxInCloud Stats

FoxInCloud sent this link a while back about their statistics regarding visits to their site:

http://foxincloud.com/blog/2017/12/27/VFP-community-lessons-from-foxincloud-site.html



What's interesting here is the breakdown of people. Yes, I think it's understandable that the Fox community is getting older.

Another factor is the growth of the mobile and web environments taking over development. These environments really do push people towards the newer non-SQL or free SQL/hosted environments but more towards hosted storage options like Amazon and Google. A tool like FoxInCloud that helps MOVE existing applications to the cloud inherently competes with those environments.

But FoxInCloud also allows developers to extend their application further by giving them a starting point using Javascript and the basic CSS (such as Bootstrap). If you're not rebuilding your application from scratch, it's certainly a great step forward.

Well, that explains CodePlex...

In a move that will be sure to anger open source (or rather anti-paid software, anti-Microsoft open source)  zealots, Microsoft is planning to buy GitHub.

A year ago, I mused about why Microsoft would shut down CodePlex and how the world needs competing source code repositories to be strong. I'm not the only one per this Slashdot article :
"...people have warned about GitHub becoming as large as it did as problematic because it concentrates too much of the power to make or break the open source world in a single entity, moreso because there were valid questions about GitHubs financial viability...." - Jacques Mattheij

I will be interested in seeing this play out - whether developers jump ship or not. Have all the efforts Microsoft has made in pushing towards open source be seen as genuine or will all the zealots jump ship or maybe even attack?

Microsoft's comment about why they shut down CodePlex referred to how spammers were using CodePlex. Well, GitHub has its own …

The World of Updates Today

I just received an update for Office 365. It certainly includes some cool features - including starting in one environment and picking it up in another environment. In recent years, I've certainly enjoined the use of Continuity on a Mac and in fact, I feel spoiled being able to start a message in one environment (even Google) and then finish it off on another.  This has become some pervasive when we were reviewing our most recent backlog at a client site, a similar feature was added to the current workload.

But with web applications, the trend is to reduce the amount of software on a client machine. I used to have automatic backup for all of my machines (thanks Carbonite!) but these days, many of my machines don't need anything beyond the core OS and some basic applications. Certainly that's the feeling with Chromebooks and even the lightweight aspect of many iOS apps. The functionality is mostly in the cloud.

When you upgrade your system, you expect it to a big update. So…