This procedure will compare the two tables Table1 & Table2 and will display the value which is present in Table1 but not present in Table2.
/*
Object: Stored Procedure
Name: usp_SyncTables
Prepared by: Hemal Shah (Database Administrator)
Purpose :
This procedure will compare the two tables Table1 & Table2 and will display the
value which is present in Table1 but not present in Table2.
Input Para:-
Table1 - Table 1
Table2 - Table 2
pKeys - No of primary keys in Table1
pKey1 - Name of pk1
pKey2 - Name of pk2
pKey3 - Name of pk3
pKey4 - Name of pk4
T1ColumnList - List of fields in Table1
T2ColumnList - List of fields in Table2 ('' by default)
Condition: The structure of the both the tables should be same
Usage: exec usp_SyncTables 'Test1','Test2',1,'id','','','','id,fullname,ts'
Modification:-
------------------------------------------------------------------------------------
DateDescription
------------------------------------------------------------------------------------
*/
CREATE PROCEDURE usp_SyncTables
(
@Table1 varchar(100),
@Table2 Varchar(100),
@pKeys int,
@pKey1 varchar(100),
@pKey2 varchar(100)= '',
@pKey3 varchar(100)= '',
@pKey4 varchar(100)= '',
@T1ColumnList varchar(1000),
@T2ColumnList varchar(1000) = ''
)
AS
declare @SQL varchar(8000);
IF @T2ColumnList = '' SET @T2ColumnList = @T1ColumnList
IF @pKeys = 1
SET @SQL = 'SELECT a.* FROM ' + @Table1 + ' a' +
' LEFT OUTER JOIN ' + @Table2 + ' b' +
' ON ' + 'a' + '.' + @pKey1 + ' = ' + 'b' + '.' + @pKey1
+ ' WHERE ' + 'b' + '.' + @pKey1 + ' IS NULL'
IF @pKeys = 2
SET @SQL = 'SELECT a.* FROM ' + @Table1 + ' a' +
' LEFT OUTER JOIN ' + @Table2 + ' b' +
' ON ' + 'a' + '.' + @pKey1 + ' = ' + 'b' + '.' + @pKey1 + ' AND ' +
'a' + '.' + @pKey2 + ' = ' + 'b' + '.' + @pKey2
+ ' WHERE ' + 'b' + '.' + @pKey1 + ' IS NULL' + ' OR ' +
'b' + '.' + @pKey2 + ' IS NULL'
IF @pKeys = 3
SET @SQL = 'SELECT a.* FROM ' + @Table1 + ' a' +
' LEFT OUTER JOIN ' + @Table2 + ' b' +
' ON ' + 'a' + '.' + @pKey1 + ' = ' + 'b' + '.' + @pKey1 + ' AND ' +
'a' + '.' + @pKey2 + ' = ' + 'b' + '.' + @pKey2 + ' AND ' +
'a' + '.' + @pKey3 + ' = ' + 'b' + '.' + @pKey3
+ ' WHERE ' + 'b' + '.' + @pKey1 + ' IS NULL' + ' OR ' +
'b' + '.' + @pKey2 + ' IS NULL' + ' OR ' +
'b' + '.' + @pKey3 + ' IS NULL'
IF @pKeys = 4
SET @SQL = 'SELECT a.* FROM ' + @Table1 + ' a' +
' LEFT OUTER JOIN ' + @Table2 + ' b' +
' ON ' + 'a' + '.' + @pKey1 + ' = ' + 'b' + '.' + @pKey1 + ' AND ' +
'a' + '.' + @pKey2 + ' = ' + 'b' + '.' + @pKey2 + ' AND ' +
'a' + '.' + @pKey3 + ' = ' + 'b' + '.' + @pKey3 + ' AND ' +
'a' + '.' + @pKey4 + ' = ' + 'b' + '.' + @pKey4
+ ' WHERE ' + 'b' + '.' + @pKey1 + ' IS NULL' + ' OR ' +
'b' + '.' + @pKey2 + ' IS NULL' + ' OR ' +
'b' + '.' + @pKey3 + ' IS NULL' + ' OR ' +
'b' + '.' + @pKey4 + ' IS NULL'
EXEC (@SQL) 
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