sql - Deleting orphans from a table -


i trying clean table there quite few orphaned items.

i approaching checking see if there relationship table looking null values.

   delete table1  left join table2 on table1.id = table2.id     table2.id null

i error left outer join not valid.

i looking suggestions on other ways can delete these orphans broken relationship

try this:

delete         table1 not exists (select null table2 table1.id = table2.id)

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