First, why have the hierarchy in two tables? It's more usual to have one table and a parent ID that refers back to the same table.
Second, try having one trigger that crawls the whole hierarchy and deletes it all in one command. A recursive CTE that does a hierarchy crawl should allow this.
- Gus "GSquared", RSVP, OODA, MAP, NMVP, FAQ, SAT, SQL, DNA, RNA, UOI, IOU, AM, PM, AD, BC, BCE, USA, UN, CF, ROFL, LOL, ETC
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