Problem With Cascade Update

Apr 8, 2007

i want to reffer A1,A2 column from a Table A to B1 column of Table B. when i use the on update cascade option for the columns A1 & A2 i get an error for the 2nd one. sql:

alter table A
add constraint fk_key1 foreign key (a1) references b(b1) on update cascade;

alter table A
add constraint fk_key2 foreign key (a2) references b(b1) on update cascade;

after executing the sql i get the following error for the 2nd sql:

Introducing FOREIGN KEY constraint 'FK_key2' on table 'A' may cause cycles or multiple cascade paths. Specify ON DELETE NO ACTION or ON UPDATE NO ACTION, or modify other FOREIGN KEY constraints.

if i dont use cascade option then i dont get any error.

but i need to synchronize the data. now can anyone help me how to add the cascade option working for the 2nd column of Table A without seperating the column in a different table?

thnx

S ]-[ /- | ]-[ /- N

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Thanks


************************************************** ******
Contract table DDL is

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Logically to me, the "UPDATE" is actually a logical DELETE and INSERT anyway because it's a new "thing"

Unless of course you buy into surrogates



Brett

8-)

Hint: Want your questions answered fast? Follow the direction in this link
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Add yourself!
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Hi,
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€¦.
€¦.

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€¦.
€¦.
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