This is very useful query while doing upgrade, you can get the count of records in each table from source and target environment. This helps you with initial level of testing. I found it useful to share.
DECLARE @QueryString NVARCHAR(MAX) ;
SELECT @QueryString = COALESCE(@QueryString + ' UNION ALL ','')
+ 'SELECT '
+ '''' + QUOTENAME(SCHEMA_NAME(sOBJ.schema_id))
+ '.' + QUOTENAME(sOBJ.name) + '''' + ' AS [TableName]
, COUNT(*) AS [RowCount] FROM '
+ QUOTENAME(SCHEMA_NAME(sOBJ.schema_id))
+ '.' + QUOTENAME(sOBJ.name) + ' WITH (NOLOCK) '
FROM sys.objects AS sOBJ
WHERE
sOBJ.type = 'U'
AND sOBJ.is_ms_shipped = 0x0
ORDER BY SCHEMA_NAME(sOBJ.schema_id), sOBJ.name ;
EXEC sp_executesql @QueryString