Comment alter table

Question

CREATE TABLE [dbo].[INVS_ITEM_LOCATIONS](
    [DEPARTMENT_CODE] [varchar](3) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL, 
    [IM_INV_NO] [numeric](10, 0) NOT NULL, 
    [LOCATION_CODE] [varchar](2) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL, 
    [CURR_QTY] [numeric](10, 0) NOT NULL CONSTRAINT [DF__INVS_ITEM__CURR___1352D76D] DEFAULT ((0)), 
    [DO_QTY] [numeric](10, 0) NOT NULL CONSTRAINT [DF__INVS_ITEM__DO_QT__1446FBA6] DEFAULT ((0)), 
    [ALLOC_QTY] [numeric](10, 0) NOT NULL CONSTRAINT [DF__INVS_ITEM__ALLOC__153B1FDF] DEFAULT ((0)), 
    [YOB_QTY] [numeric](10, 0) NOT NULL CONSTRAINT [DF__INVS_ITEM__YOB_Q__162F4418] DEFAULT ((0)), 
    [FOC_QTY] [numeric](10, 0) NULL CONSTRAINT [DF__INVS_ITEM__FOC_Q__17236851] DEFAULT ((0)), 
    [USER_CREATED] [varchar](25) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL, 
    [DATE_CREATED] [datetime] NOT NULL, 
    [USER_MODIFIED] [varchar](25) COLLATE SQL_Latin1_General_CP1_CI_AS NULL, 
    [DATE_MODIFIED] [datetime] NULL, 
CONSTRAINT [INVS_ITEM_LOCATIONS_PK] PRIMARY KEY CLUSTERED 
(
    [DEPARTMENT_CODE] ASC, 
    [IM_INV_NO] ASC, 
    [LOCATION_CODE] ASC 
)WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY] 
) ON [PRIMARY] 

c'est mon nom de table Comment puis-je supprimer la clé primaire dans le code im_inv_ni et location_

et aussi je dois ajouter la clé foriegn à im_inv_no .... pls aider

Answer 1

Vous peut utiliser le-ALTER TABLE -statements. Plus d'informations peuvent être trouvées ici http://ss64.com/ora/table_a_cons.html.

Les déclarations nécessaires sont

ALTER TABLE [dbo].INVS_ITEM_LOCATIONS DROP PRIMARY KEY; 
ALTER TABLE [dbo].INVS_ITEM_LOCATIONS ADD CONSTRAINT <name of fk> FOREIGN KEY (<columns>) REFERENCES <table>(<columns>);