Posted by akej via SQLMonster.com on 10/01/21 11:17

Hi, suppose i have 3 tables

main table

CREATE TABLE table1 (
[t1ID] [int] primary key ,
[t1Name] nvatchar(50) NOT NULL,
............................

)

and connections tables (t1ID is a foreign key in all connection tables)

CREATE TABLE tbl2 (
[t1ID] [int] not null,
[gID] [int] not null
PRIMARY KEY (t1ID, gID)
)

CREATE TABLE tbl3 (
[t1ID] [int] not null,
[pID] [int] not null
PRIMARY KEY (t1ID, pID)
)

*******************************************************

t1ID CLISTERED INDEX
in othre tables each primary key is clustered.

gID and pID are keys from other table: gtable, ptable



Now in case one row was deletes from table1 i need to delete all t1ID's
from the connection tables (each of connection may have e.g. 200000 rows).
If u use delete on cascade it's take a lot of time, i want to delete let's
say 1000 rows till all irrelevant rows will be deleted.

How To accomplish this??
Thanks.

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