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On Mar 07, 2014 @ 03:32 pm, [email protected] wrote:
Do you make FK over existing records?You probably already have old records in 
second table which refer to nonexistent PK in first table.Delete all old orphan 
records in second table, and then make FK.  

--- In [email protected], "Isaac Bekheit" <isaac_cm@...> wrote:
>
> hello,
> I tried to create a foreign key but I always get this error:
> 
> violation of FOREIGN KEY constraint "".
> violation of FOREIGN KEY constraint "FK_RES_TREEVIEW_1" on table 
> "RES_TREEVIEW".
> Foreign key reference target does not exist.
> 
> here is my two tables DDL:
> 
> CREATE TABLE STYLES (
>     STYLE_ID              INTEGER DEFAULT -1 NOT NULL,
>     STYLE_NAME            VARCHAR(80) NOT NULL,
>     BACK_COLOR            VARCHAR(35),
>     BACK_COLOR_ENABLED    SMALLINT DEFAULT 0,
>     FONT_STYLE_IS_UNDER   SMALLINT DEFAULT 0,
>     FONT_STYLE_IS_STRIKE  SMALLINT DEFAULT 0,
>     BITMAP_IMAGE          BLOB SUB_TYPE 0 SEGMENT SIZE 80
> );
> 
> ALTER TABLE STYLES ADD CONSTRAINT PK_STYLES1 PRIMARY KEY (STYLE_ID);
> 
> ===============================================================
> 
> CREATE TABLE RES_TREEVIEW (
>     FOLDER_ID               BIGINT NOT NULL,
>     FOLDER_PARENT_ID        BIGINT NOT NULL,
>     FOLDER_NAME             VARCHAR(100) NOT NULL,
>     FOLDER_POSITION         BIGINT NOT NULL,
>     FOLDER_IMAGE_INDEX      SMALLINT,
>     FOLDER_FLAG             BLOB SUB_TYPE 0 SEGMENT SIZE 80,
>     FOLDER_ICON             BLOB SUB_TYPE 0 SEGMENT SIZE 80,
>     IS_FOLDER_CUSTOM_ICON   SMALLINT DEFAULT 0,
>     STYLE_ID                INTEGER DEFAULT -1
> );
> 
> ALTER TABLE RES_TREEVIEW ADD CONSTRAINT PK_RES_TREEVIEW PRIMARY KEY 
> (FOLDER_ID);
> 
> alter table RES_TREEVIEW
> add constraint FK_RES_TREEVIEW_1
> foreign key (STYLE_ID)
> references STYLES(STYLE_ID)
> on delete SET DEFAULT
> on update CASCADE
> 
> ========================================================
> any advice ?
> 
> Thanks
>

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