In the music the moment you own it and can decode your database!

Yesterday I had the awesome opportunity to present at Big Mountain Data and SQL Saturday Salt Lake City.  I was super nervous, but I think it went well over all.  Huge thank you to the kind friends that sat in the audience to help build my confidence and for everyone that attended.  Here are the scripts that I promised to post.  If you would like the slide deck, it is posted on the Utah Geek Events website here: http://www.utahgeekevents.com/Downloads

The first script is the one that gets the row counts on each table so you can see what tables you want to look at and what tables you want to skip.

 
-- Shows all user tables and row counts for the current database
-- Remove is_ms_shipped = 0 check to include system objects
-- i.index_id < 2 indicates clustered index (1) or hash table (0)
SELECT o.name,
ddps.row_count
FROM sys.indexes AS i
INNER JOIN sys.objects AS o ON i.OBJECT_ID = o.OBJECT_ID
INNER JOIN sys.dm_db_partition_stats AS ddps ON i.OBJECT_ID = ddps.OBJECT_ID
AND i.index_id = ddps.index_id
WHERE i.index_id = 2
AND o.is_ms_shipped = 0
ORDER BY ddps.row_count DESC

This next part is the second demo I did about digging through the database.

 
--What columns are in the Sales Tables?
SELECT A.name, B.name
FROM sys.tables A
INNER JOIN sys.columns B ON A.object_id = B.object_id
WHERE A.name LIKE '%Sales%'

--Column called "Order" something with amount?
SELECT A.name, B.name
FROM sys.tables A
INNER JOIN sys.columns B ON A.object_id = B.object_id
WHERE B.name LIKE '%Order%'

--OrderQty is the column I am looking for...
SELECT A.name, B.name
FROM sys.tables A
INNER JOIN sys.columns B ON A.object_id = B.object_id
WHERE B.name LIKE '%OrderQty%'

--How do I know for sure it is the table I want?
SELECT 
c.name 'Column Name',
t.Name 'Data type',
c.max_length 'Max Length',
c.precision ,
--c.scale ,
--c.is_nullable,
ISNULL(i.is_primary_key, 0) 'Primary Key'
FROM sys.columns c
INNER JOIN sys.types t ON c.user_type_id = t.user_type_id
LEFT OUTER JOIN sys.index_columns ic ON ic.object_id = c.object_id AND ic.column_id = c.column_id
LEFT OUTER JOIN sys.indexes i ON ic.object_id = i.object_id AND ic.index_id = i.index_id
WHERE c.object_id = OBJECT_ID('Sales.SalesOrderDetail')

This is the code from the third demo where I was looking for the foreign keys. I got this off stack overflow and it has been very helpful.

 
SELECT obj.name AS FK_NAME, sch.name AS [schema_name], tab1.name AS [table], col1.name AS [column], tab2.name AS [referenced_table], col2.name AS [referenced_column]
FROM sys.foreign_key_columns fkc
INNER JOIN sys.objects obj ON obj.object_id = fkc.constraint_object_id
INNER JOIN sys.tables tab1 ON tab1.object_id = fkc.parent_object_id
INNER JOIN sys.schemas sch ON tab1.schema_id = sch.schema_id
INNER JOIN sys.columns col1 ON col1.column_id = parent_column_id AND col1.object_id = tab1.object_id
INNER JOIN sys.tables tab2 ON tab2.object_id = fkc.referenced_object_id
INNER JOIN sys.columns col2 ON col2.column_id = referenced_column_id AND col2.object_id = tab2.object_id
WHERE tab1.name = 'SalesOrderDetail'

The other demos that I did were opening Views and stored procedures and a walk through of how to use the Database Diagram feature.

Hope you all had a wonderful time at the event like I did!

About andreaallred

SQL Server and helping people is my passion. If I can make someone laugh, I know I have made a difference.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s