-- disable all constraints
EXEC sp_MSforeachtable"ALTER TABLE ? NOCHECK CONSTRAINT all"

-- enable all constraints
exec sp_MSforeachtable @command1="print '?'", @command2="ALTER TABLE ? WITH CHECK CHECK CONSTRAINT all"

-- Disable all table constraints

ALTER TABLE MyTable NOCHECK CONSTRAINT ALL

-- Enable all table constraints

ALTER TABLE MyTable WITH CHECK CHECK CONSTRAINT ALL

-- Disable single constraint

ALTER TABLE MyTable NOCHECK CONSTRAINT MyConstraint

-- Enable single constraint

ALTER TABLE MyTable WITH CHECK CHECK CONSTRAINT MyConstraint

PRINT N'-- CREATE FOREIGN KEY CONSTRAINTS --';

SET NOCOUNT ON;
SELECT '
PRINT N''Creating '+ const.const_name +'...''
GO
ALTER TABLE ' + const.parent_obj + '
    ADD CONSTRAINT ' + const.const_name + ' FOREIGN KEY (
            ' + const.parent_col_csv + '
            ) REFERENCES ' + const.ref_obj + '(' + const.ref_col_csv + ')
GO'
FROM (
    SELECT QUOTENAME(fk.NAME) AS [const_name]
        ,QUOTENAME(schParent.NAME) + '.' + QUOTENAME(OBJECT_name(fkc.parent_object_id)) AS [parent_obj]
        ,STUFF((
                SELECT ',' + QUOTENAME(COL_NAME(fcP.parent_object_id, fcp.parent_column_id))
                FROM sys.foreign_key_columns AS fcP
                WHERE fcp.constraint_object_id = fk.object_id
                FOR XML path('')
                ), 1, 1, '') AS [parent_col_csv]
        ,QUOTENAME(schRef.NAME) + '.' + QUOTENAME(OBJECT_NAME(fkc.referenced_object_id)) AS [ref_obj]
        ,STUFF((
                SELECT ',' + QUOTENAME(COL_NAME(fcR.referenced_object_id, fcR.referenced_column_id))
                FROM sys.foreign_key_columns AS fcR
                WHERE fcR.constraint_object_id = fk.object_id
                FOR XML path('')
                ), 1, 1, '') AS [ref_col_csv]
    FROM sys.foreign_key_columns AS fkc
    INNER JOIN sys.foreign_keys AS fk ON fk.object_id = fkc.constraint_object_id
    INNER JOIN sys.objects AS oParent ON oParent.object_id = fkc.parent_object_id
    INNER JOIN sys.schemas AS schParent ON schParent.schema_id = oParent.schema_id
    INNER JOIN sys.objects AS oRef ON oRef.object_id = fkc.referenced_object_id
    INNER JOIN sys.schemas AS schRef ON schRef.schema_id = oRef.schema_id
    GROUP BY fkc.parent_object_id
        ,fkc.referenced_object_id
        ,fk.NAME
        ,fk.object_id
        ,schParent.NAME
        ,schRef.NAME
    ) AS const
ORDER BY const.const_name

PRINT N'-- DROP FOREIGN KEY CONSTRAINTS --';

SET NOCOUNT ON;

SELECT '
PRINT N''Dropping ' + fk.NAME + '...''
GO
ALTER TABLE [' + sch.NAME + '].[' + OBJECT_NAME(fk.parent_object_id) + ']' + ' DROP  CONSTRAINT ' + '[' + fk.NAME + ']
GO'
FROM sys.foreign_keys AS fk
INNER JOIN sys.schemas AS sch ON sch.schema_id = fk.schema_id
ORDER BY fk.NAME

ALTER TABLE [TABLE_NAME] NOCHECK CONSTRAINT [ALL|CONSTRAINT_NAME]

ALTER TABLE [TABLE_NAME] WITH CHECK CHECK CONSTRAINT [ALL|CONSTRAINT_NAME]

    SELECT (CASE
        WHEN OBJECTPROPERTY(CONSTID, 'CNSTISDISABLED') = 0 THEN 'ENABLED'
        ELSE 'DISABLED'
        END) AS STATUS,
        OBJECT_NAME(CONSTID) AS CONSTRAINT_NAME,
        OBJECT_NAME(FKEYID) AS TABLE_NAME,
        COL_NAME(FKEYID, FKEY) AS COLUMN_NAME,
        OBJECT_NAME(RKEYID) AS REFERENCED_TABLE_NAME,
        COL_NAME(RKEYID, RKEY) AS REFERENCED_COLUMN_NAME
   FROM SYSFOREIGNKEYS
ORDER BY TABLE_NAME, CONSTRAINT_NAME,REFERENCED_TABLE_NAME, KEYNO

   --Drop and Recreate Foreign Key Constraints

SET NOCOUNT ON

DECLARE @table TABLE(
   RowId INT PRIMARY KEY IDENTITY(1, 1),
   ForeignKeyConstraintName NVARCHAR(200),
   ForeignKeyConstraintTableSchema NVARCHAR(200),
   ForeignKeyConstraintTableName NVARCHAR(200),
   ForeignKeyConstraintColumnName NVARCHAR(200),
   PrimaryKeyConstraintName NVARCHAR(200),
   PrimaryKeyConstraintTableSchema NVARCHAR(200),
   PrimaryKeyConstraintTableName NVARCHAR(200),
   PrimaryKeyConstraintColumnName NVARCHAR(200)    
)

INSERT INTO @table(ForeignKeyConstraintName, ForeignKeyConstraintTableSchema, ForeignKeyConstraintTableName, ForeignKeyConstraintColumnName)
SELECT
   U.CONSTRAINT_NAME,
   U.TABLE_SCHEMA,
   U.TABLE_NAME,
   U.COLUMN_NAME
FROM
   INFORMATION_SCHEMA.KEY_COLUMN_USAGE U
      INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS C
         ON U.CONSTRAINT_NAME = C.CONSTRAINT_NAME
WHERE
   C.CONSTRAINT_TYPE = 'FOREIGN KEY'

UPDATE @table SET
   PrimaryKeyConstraintName = UNIQUE_CONSTRAINT_NAME
FROM
   @table T
      INNER JOIN INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS R
         ON T.ForeignKeyConstraintName = R.CONSTRAINT_NAME

UPDATE @table SET
   PrimaryKeyConstraintTableSchema  = TABLE_SCHEMA,
   PrimaryKeyConstraintTableName  = TABLE_NAME
FROM @table T
   INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS C
      ON T.PrimaryKeyConstraintName = C.CONSTRAINT_NAME

UPDATE @table SET
   PrimaryKeyConstraintColumnName = COLUMN_NAME
FROM @table T
   INNER JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE U
      ON T.PrimaryKeyConstraintName = U.CONSTRAINT_NAME

--SELECT * FROM @table

--DROP CONSTRAINT:
SELECT
   '
   ALTER TABLE [' + ForeignKeyConstraintTableSchema + '].[' + ForeignKeyConstraintTableName + ']
   DROP CONSTRAINT ' + ForeignKeyConstraintName + '

   GO'
FROM
   @table

--ADD CONSTRAINT:
SELECT
   '
   ALTER TABLE [' + ForeignKeyConstraintTableSchema + '].[' + ForeignKeyConstraintTableName + ']
   ADD CONSTRAINT ' + ForeignKeyConstraintName + ' FOREIGN KEY(' + ForeignKeyConstraintColumnName + ') REFERENCES [' + PrimaryKeyConstraintTableSchema + '].[' + PrimaryKeyConstraintTableName + '](' + PrimaryKeyConstraintColumnName + ')

   GO'
FROM
   @table

GO

SET NOCOUNT ON

DECLARE @table TABLE(
   RowId INT PRIMARY KEY IDENTITY(1, 1),
   ForeignKeyConstraintName NVARCHAR(200),
   ForeignKeyConstraintTableSchema NVARCHAR(200),
   ForeignKeyConstraintTableName NVARCHAR(200),
   ForeignKeyConstraintColumnName NVARCHAR(200),
   PrimaryKeyConstraintName NVARCHAR(200),
   PrimaryKeyConstraintTableSchema NVARCHAR(200),
   PrimaryKeyConstraintTableName NVARCHAR(200),
   PrimaryKeyConstraintColumnName NVARCHAR(200),
   UpdateRule NVARCHAR(100),
   DeleteRule NVARCHAR(100)  
)

INSERT INTO @table(ForeignKeyConstraintName, ForeignKeyConstraintTableSchema, ForeignKeyConstraintTableName, ForeignKeyConstraintColumnName)
SELECT
   U.CONSTRAINT_NAME,
   U.TABLE_SCHEMA,
   U.TABLE_NAME,
   U.COLUMN_NAME
FROM
   INFORMATION_SCHEMA.KEY_COLUMN_USAGE U
      INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS C
         ON U.CONSTRAINT_NAME = C.CONSTRAINT_NAME
WHERE
   C.CONSTRAINT_TYPE = 'FOREIGN KEY'

UPDATE @table SET
   T.PrimaryKeyConstraintName = R.UNIQUE_CONSTRAINT_NAME,
   T.UpdateRule = R.UPDATE_RULE,
   T.DeleteRule = R.DELETE_RULE
FROM
   @table T
      INNER JOIN INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS R
         ON T.ForeignKeyConstraintName = R.CONSTRAINT_NAME

UPDATE @table SET
   PrimaryKeyConstraintTableSchema  = TABLE_SCHEMA,
   PrimaryKeyConstraintTableName  = TABLE_NAME
FROM @table T
   INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS C
      ON T.PrimaryKeyConstraintName = C.CONSTRAINT_NAME

UPDATE @table SET
   PrimaryKeyConstraintColumnName = COLUMN_NAME
FROM @table T
   INNER JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE U
      ON T.PrimaryKeyConstraintName = U.CONSTRAINT_NAME

--SELECT * FROM @table

SELECT '
BEGIN TRANSACTION
BEGIN TRY'

--DROP CONSTRAINT:
SELECT
   '
 ALTER TABLE [' + ForeignKeyConstraintTableSchema + '].[' + ForeignKeyConstraintTableName + ']
 DROP CONSTRAINT ' + ForeignKeyConstraintName + '
   '
FROM
   @table

SELECT '
END TRY

BEGIN CATCH
   ROLLBACK TRANSACTION
   RAISERROR(''Operation failed.'', 16, 1)
END CATCH

IF(@@TRANCOUNT != 0)
BEGIN
   COMMIT TRANSACTION
   RAISERROR(''Operation completed successfully.'', 10, 1)
END
'

--ADD CONSTRAINT:
SELECT '
BEGIN TRANSACTION
BEGIN TRY'

SELECT
   '
   ALTER TABLE [' + ForeignKeyConstraintTableSchema + '].[' + ForeignKeyConstraintTableName + ']
   ADD CONSTRAINT ' + ForeignKeyConstraintName + ' FOREIGN KEY(' + ForeignKeyConstraintColumnName + ') REFERENCES [' + PrimaryKeyConstraintTableSchema + '].[' + PrimaryKeyConstraintTableName + '](' + PrimaryKeyConstraintColumnName + ') ON UPDATE ' + UpdateRule + ' ON DELETE ' + DeleteRule + '
   '
FROM
   @table

SELECT '
END TRY

BEGIN CATCH
   ROLLBACK TRANSACTION
   RAISERROR(''Operation failed.'', 16, 1)
END CATCH

IF(@@TRANCOUNT != 0)
BEGIN
   COMMIT TRANSACTION
   RAISERROR(''Operation completed successfully.'', 10, 1)
END'

GO

----------------------------------------------------------------------------
1)
/*
Author:         Denmach
DateCreated:    2014-04-23
Purpose:        Generates SQL statements to DROP, ADD, and CHECK existing constraints for a
                database.  Stores scripts in tables on target database for execution.  Executes
                those stored scripts via independent cursors.
DateModified:
ModifiedBy
Comments:       This will eliminate deletes and the T-log ballooning associated with it.
*/

DECLARE @schema_name SYSNAME;
DECLARE @table_name SYSNAME;
DECLARE @constraint_name SYSNAME;
DECLARE @constraint_object_id INT;
DECLARE @referenced_object_name SYSNAME;
DECLARE @is_disabled BIT;
DECLARE @is_not_for_replication BIT;
DECLARE @is_not_trusted BIT;
DECLARE @delete_referential_action TINYINT;
DECLARE @update_referential_action TINYINT;
DECLARE @tsql NVARCHAR(4000);
DECLARE @tsql2 NVARCHAR(4000);
DECLARE @fkCol SYSNAME;
DECLARE @pkCol SYSNAME;
DECLARE @col1 BIT;
DECLARE @action CHAR(6);  
DECLARE @referenced_schema_name SYSNAME;



--------------------------------Generate scripts to drop all foreign keys in a database --------------------------------

IF OBJECT_ID('dbo.sync_dropFK') IS NOT NULL
DROP TABLE sync_dropFK

CREATE TABLE sync_dropFK
    (
    ID INT IDENTITY (1,1) NOT NULL
    , Script NVARCHAR(4000)
    )

DECLARE FKcursor CURSOR FOR

    SELECT
        OBJECT_SCHEMA_NAME(parent_object_id)
        , OBJECT_NAME(parent_object_id)
        , name
    FROM
        sys.foreign_keys WITH (NOLOCK)
    ORDER BY
        1,2;

OPEN FKcursor;

FETCH NEXT FROM FKcursor INTO
    @schema_name
    , @table_name
    , @constraint_name

WHILE @@FETCH_STATUS = 0

BEGIN
        SET @tsql = 'ALTER TABLE '
                + QUOTENAME(@schema_name)
                + '.'
                + QUOTENAME(@table_name)
                + ' DROP CONSTRAINT '
                + QUOTENAME(@constraint_name)
                + ';';
    --PRINT @tsql;
    INSERT sync_dropFK  (
                        Script
                        )
                        VALUES (
                                @tsql
                                )  

    FETCH NEXT FROM FKcursor INTO
    @schema_name
    , @table_name
    , @constraint_name
    ;

END;

CLOSE FKcursor;

DEALLOCATE FKcursor;


---------------Generate scripts to create all existing foreign keys in a database --------------------------------
----------------------------------------------------------------------------------------------------------
IF OBJECT_ID('dbo.sync_createFK') IS NOT NULL
DROP TABLE sync_createFK

CREATE TABLE sync_createFK
    (
    ID INT IDENTITY (1,1) NOT NULL
    , Script NVARCHAR(4000)
    )

IF OBJECT_ID('dbo.sync_createCHECK') IS NOT NULL
DROP TABLE sync_createCHECK

CREATE TABLE sync_createCHECK
    (
    ID INT IDENTITY (1,1) NOT NULL
    , Script NVARCHAR(4000)
    )  

DECLARE FKcursor CURSOR FOR

     SELECT
        OBJECT_SCHEMA_NAME(parent_object_id)
        , OBJECT_NAME(parent_object_id)
        , name
        , OBJECT_NAME(referenced_object_id)
        , OBJECT_ID
        , is_disabled
        , is_not_for_replication
        , is_not_trusted
        , delete_referential_action
        , update_referential_action
        , OBJECT_SCHEMA_NAME(referenced_object_id)

    FROM
        sys.foreign_keys WITH (NOLOCK)

    ORDER BY
        1,2;

OPEN FKcursor;

FETCH NEXT FROM FKcursor INTO
    @schema_name
    , @table_name
    , @constraint_name
    , @referenced_object_name
    , @constraint_object_id
    , @is_disabled
    , @is_not_for_replication
    , @is_not_trusted
    , @delete_referential_action
    , @update_referential_action
    , @referenced_schema_name;

WHILE @@FETCH_STATUS = 0

BEGIN

        BEGIN
            SET @tsql = 'ALTER TABLE '
                        + QUOTENAME(@schema_name)
                        + '.'
                        + QUOTENAME(@table_name)
                        +   CASE
                                @is_not_trusted
                                WHEN 0 THEN ' WITH CHECK '
                                ELSE ' WITH NOCHECK '
                            END
                        + ' ADD CONSTRAINT '
                        + QUOTENAME(@constraint_name)
                        + ' FOREIGN KEY (';

        SET @tsql2 = '';

        DECLARE ColumnCursor CURSOR FOR

            SELECT
                COL_NAME(fk.parent_object_id
                , fkc.parent_column_id)
                , COL_NAME(fk.referenced_object_id
                , fkc.referenced_column_id)

            FROM
                sys.foreign_keys fk WITH (NOLOCK)
                INNER JOIN sys.foreign_key_columns fkc WITH (NOLOCK) ON fk.[object_id] = fkc.constraint_object_id

            WHERE
                fkc.constraint_object_id = @constraint_object_id

            ORDER BY
                fkc.constraint_column_id;

        OPEN ColumnCursor;

        SET @col1 = 1;

        FETCH NEXT FROM ColumnCursor INTO @fkCol, @pkCol;

        WHILE @@FETCH_STATUS = 0

        BEGIN
            IF (@col1 = 1)
                SET @col1 = 0;
            ELSE
            BEGIN
                SET @tsql = @tsql + ',';
                SET @tsql2 = @tsql2 + ',';
            END;

            SET @tsql = @tsql + QUOTENAME(@fkCol);
            SET @tsql2 = @tsql2 + QUOTENAME(@pkCol);
            --PRINT '@tsql = ' + @tsql
            --PRINT '@tsql2 = ' + @tsql2
            FETCH NEXT FROM ColumnCursor INTO @fkCol, @pkCol;
            --PRINT 'FK Column ' + @fkCol
            --PRINT 'PK Column ' + @pkCol
        END;

        CLOSE ColumnCursor;
        DEALLOCATE ColumnCursor;

        SET @tsql = @tsql + ' ) REFERENCES '
                    + QUOTENAME(@referenced_schema_name)
                    + '.'
                    + QUOTENAME(@referenced_object_name)
                    + ' ('
                    + @tsql2 + ')';

        SET @tsql = @tsql
                    + ' ON UPDATE '
                    +
                        CASE @update_referential_action
                            WHEN 0 THEN 'NO ACTION '
                            WHEN 1 THEN 'CASCADE '
                            WHEN 2 THEN 'SET NULL '
                                ELSE 'SET DEFAULT '
                        END

                    + ' ON DELETE '
                    +
                        CASE @delete_referential_action
                            WHEN 0 THEN 'NO ACTION '
                            WHEN 1 THEN 'CASCADE '
                            WHEN 2 THEN 'SET NULL '
                                ELSE 'SET DEFAULT '
                        END

                    +
                    CASE @is_not_for_replication
                        WHEN 1 THEN ' NOT FOR REPLICATION '
                            ELSE ''
                    END
                    + ';';

        END;

    --  PRINT @tsql
        INSERT sync_createFK    
                        (
                        Script
                        )
                        VALUES (
                                @tsql
                                )

-------------------Generate CHECK CONSTRAINT scripts for a database ------------------------------
----------------------------------------------------------------------------------------------------------

        BEGIN

        SET @tsql = 'ALTER TABLE '
                    + QUOTENAME(@schema_name)
                    + '.'
                    + QUOTENAME(@table_name)
                    +
                        CASE @is_disabled
                            WHEN 0 THEN ' CHECK '
                                ELSE ' NOCHECK '
                        END
                    + 'CONSTRAINT '
                    + QUOTENAME(@constraint_name)
                    + ';';
        --PRINT @tsql;
        INSERT sync_createCHECK
                        (
                        Script
                        )
                        VALUES (
                                @tsql
                                )  
        END;

    FETCH NEXT FROM FKcursor INTO
    @schema_name
    , @table_name
    , @constraint_name
    , @referenced_object_name
    , @constraint_object_id
    , @is_disabled
    , @is_not_for_replication
    , @is_not_trusted
    , @delete_referential_action
    , @update_referential_action
    , @referenced_schema_name;

END;

CLOSE FKcursor;

DEALLOCATE FKcursor;

--SELECT * FROM sync_DropFK
--SELECT * FROM sync_CreateFK
--SELECT * FROM sync_CreateCHECK
---------------------------------------------------------------------------
2.)
-----------------------------------------------------------------------------------------------------------------
----------------------------execute Drop FK Scripts --------------------------------------------------

DECLARE @scriptD NVARCHAR(4000)

DECLARE DropFKCursor CURSOR FOR
    SELECT Script
    FROM sync_dropFK WITH (NOLOCK)

OPEN DropFKCursor

FETCH NEXT FROM DropFKCursor
INTO @scriptD

WHILE @@FETCH_STATUS = 0
BEGIN
--PRINT @scriptD
EXEC (@scriptD)
FETCH NEXT FROM DropFKCursor
INTO @scriptD
END
CLOSE DropFKCursor
DEALLOCATE DropFKCursor
--------------------------------------------------------------------------------
3.)

------------------------------------------------------------------------------------------------------------------
----------------------------Truncate all tables in the database other than our staging tables --------------------
------------------------------------------------------------------------------------------------------------------


EXEC sp_MSforeachtable 'IF OBJECT_ID(''?'') NOT IN
(
ISNULL(OBJECT_ID(''dbo.sync_createCHECK''),0),
ISNULL(OBJECT_ID(''dbo.sync_createFK''),0),
ISNULL(OBJECT_ID(''dbo.sync_dropFK''),0)
)
BEGIN TRY
 TRUNCATE TABLE ?
END TRY
BEGIN CATCH
 PRINT ''Truncation failed on''+ ? +''
END CATCH;'
GO
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------
----------------------------execute Create FK Scripts and CHECK CONSTRAINT Scripts---------------
----------------------------tack me at the end of the ETL in a SQL task-------------------------
-------------------------------------------------------------------------------------------------
DECLARE @scriptC NVARCHAR(4000)

DECLARE CreateFKCursor CURSOR FOR
    SELECT Script
    FROM sync_createFK WITH (NOLOCK)

OPEN CreateFKCursor

FETCH NEXT FROM CreateFKCursor
INTO @scriptC

WHILE @@FETCH_STATUS = 0
BEGIN
--PRINT @scriptC
EXEC (@scriptC)
FETCH NEXT FROM CreateFKCursor
INTO @scriptC
END
CLOSE CreateFKCursor
DEALLOCATE CreateFKCursor
-------------------------------------------------------------------------------------------------
DECLARE @scriptCh NVARCHAR(4000)

DECLARE CreateCHECKCursor CURSOR FOR
    SELECT Script
    FROM sync_createCHECK WITH (NOLOCK)

OPEN CreateCHECKCursor

FETCH NEXT FROM CreateCHECKCursor
INTO @scriptCh

WHILE @@FETCH_STATUS = 0
BEGIN
--PRINT @scriptCh
EXEC (@scriptCh)
FETCH NEXT FROM CreateCHECKCursor
INTO @scriptCh
END
CLOSE CreateCHECKCursor
DEALLOCATE CreateCHECKCursor

ALTER TABLE MyTable CHECK CONSTRAINT MyConstraint;

ALTER TABLE MyTable WITH CHECK CHECK CONSTRAINT MyConstraint;

SELECT * FROM sys.foreign_keys WHERE is_not_trusted = 1;

SELECT *
FROM sys.foreign_keys
WHERE referenced_object_id = object_id('TABLE_NAME')

SELECT
    'ALTER TABLE ' +  OBJECT_SCHEMA_NAME(parent_object_id) +
    '.[' + OBJECT_NAME(parent_object_id) +
    '] DROP CONSTRAINT ' + name
FROM sys.foreign_keys
WHERE referenced_object_id = object_id('TABLE_NAME')

select 'ALTER TABLE ' + object_name(id) + ' NOCHECK CONSTRAINT [' + object_name(constid) + ']'
from sys.sysconstraints
where status & 0x4813 = 0x813 order by object_name(id)

select 'ALTER TABLE ' + object_name(id) + ' CHECK CONSTRAINT [' + object_name(constid) + ']'
from sys.sysconstraints
where status & 0x4813 = 0x813 order by object_name(id)

Alter table MyTable nocheck constraint FK_ForeignKeyConstraintName

Alter table Locations nocheck constraint FK_LocationsEmployeesLocationIdEmployeeId

DECLARE @sql AS NVARCHAR(max)=''
select @sql = @sql +
    'ALTER INDEX ALL ON [' + t.[name] + '] DISABLE;'+CHAR(13)
from  
    sys.tables t
where type='u'

select @sql = @sql +
    'ALTER INDEX ' + i.[name] + ' ON [' + t.[name] + '] REBUILD;'+CHAR(13)
from  
    sys.key_constraints i
join
    sys.tables t on i.parent_object_id=t.object_id
where
    i.type='PK'


exec dbo.sp_executesql @sql;
go

DECLARE @sql AS NVARCHAR(max)=''
select @sql = @sql +
    'ALTER INDEX ALL ON [' + t.[name] + '] REBUILD;'+CHAR(13)
from  
    sys.tables t
where type='u'

exec dbo.sp_executesql @sql;
go

/****** Object:  UserDefinedTableType [util].[typ_objects_for_managing]    Script Date: 03/04/2016 16:42:55 ******/
CREATE TYPE [util].[typ_objects_for_managing] AS TABLE(
    [schema] [sysname] NOT NULL,
    [object] [sysname] NOT NULL
)
GO

create procedure [util].[truncate_table_with_constraints]
@objects_for_managing util.typ_objects_for_managing readonly

--@schema sysname
--,@table sysname

as
--select
--    @table = 'TABLE',
--    @schema = 'SCHEMA'

declare @exec_table as table (ordinal int identity (1,1), statement nvarchar(4000), primary key (ordinal));

--print '/*Drop Foreign Key Statements for ['+@schema+'].['+@table+']*/'

insert into @exec_table (statement)
select
          'ALTER TABLE ['+SCHEMA_NAME(o.schema_id)+'].['+ o.name+'] DROP CONSTRAINT ['+fk.name+']'
from sys.foreign_keys fk
inner join sys.objects o
          on fk.parent_object_id = o.object_id
where
exists (
select * from @objects_for_managing chk
where
chk.[schema] = SCHEMA_NAME(o.schema_id)  
and
chk.[object] = o.name
)
;
          --o.name = @table and
          --SCHEMA_NAME(o.schema_id)  = @schema

insert into @exec_table (statement)
select
'TRUNCATE TABLE ' + src.[schema] + '.' + src.[object]
from @objects_for_managing src
;

--print '/*Create Foreign Key Statements for ['+@schema+'].['+@table+']*/'
insert into @exec_table (statement)
select 'ALTER TABLE ['+SCHEMA_NAME(o.schema_id)+'].['+o.name+'] ADD CONSTRAINT ['+fk.name+'] FOREIGN KEY (['+c.name+'])
REFERENCES ['+SCHEMA_NAME(refob.schema_id)+'].['+refob.name+'](['+refcol.name+'])'
from sys.foreign_key_columns fkc
inner join sys.foreign_keys fk
          on fkc.constraint_object_id = fk.object_id
inner join sys.objects o
          on fk.parent_object_id = o.object_id
inner join sys.columns c
          on      fkc.parent_column_id = c.column_id and
                   o.object_id = c.object_id
inner join sys.objects refob
          on fkc.referenced_object_id = refob.object_id
inner join sys.columns refcol
          on fkc.referenced_column_id = refcol.column_id and
                   fkc.referenced_object_id = refcol.object_id
where
exists (
select * from @objects_for_managing chk
where
chk.[schema] = SCHEMA_NAME(o.schema_id)  
and
chk.[object] = o.name
)
;

          --o.name = @table and
          --SCHEMA_NAME(o.schema_id)  = @schema



declare @looper int , @total_records int, @sql_exec nvarchar(4000)

select @looper = 1, @total_records = count(*) from @exec_table;

while @looper <= @total_records
begin

select @sql_exec = (select statement from @exec_table where ordinal =@looper)
exec sp_executesql @sql_exec
print @sql_exec
set @looper = @looper + 1
end

declare @schema nvarchar(max) = 'and Schema_Id=Schema_id(''Value'')'
declare @deletiontables nvarchar(max) = '(''TableA'',''TableB'')'
declare @truncateclause nvarchar(max) = @schema + ' and o.Name not in ' +  + @deletiontables;
declare @deleteclause nvarchar(max) = @schema + ' and o.Name in ' + @deletiontables;        

exec sp_MSforeachtable 'alter table ? nocheck constraint all', @whereand=@schema
exec sp_MSforeachtable 'truncate table ?', @whereand=@truncateclause
exec sp_MSforeachtable 'delete from ?', @whereand=@deleteclause
exec sp_MSforeachtable 'alter table ? with check check constraint all', @whereand=@schema