From 1cdf2125f5b2dc298dff4cdb67632d9ec8f89f6f Mon Sep 17 00:00:00 2001
From: Daniel <daniel@harvey>
Date: Mon, 27 Apr 2020 13:44:04 +0200
Subject: [PATCH] FIX: more restrictive insertion into isa_cache table
For issue #18
---
procedures/insertIsaCache.sql | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/procedures/insertIsaCache.sql b/procedures/insertIsaCache.sql
index aacb4cd..a4490bd 100644
--- a/procedures/insertIsaCache.sql
+++ b/procedures/insertIsaCache.sql
@@ -60,7 +60,7 @@ insert_is_a_proc: BEGIN
p, -- New parent (directly)
concat(p, ">", i.rpath)) -- Else "p>super.rpath"
AS rpath
- FROM isa_cache AS i WHERE i.child = p; -- Select rows with supertype
+ FROM isa_cache AS i WHERE i.child = p AND i.child != i.parent; -- Select rows with supertype
-- Propagate to descendants:
-- for each subtype of c: insert each supertype of p
@@ -78,7 +78,7 @@ insert_is_a_proc: BEGIN
AS rpath
FROM
isa_cache as l INNER JOIN isa_cache as r
- ON (l.parent = c AND c = r.child); -- Left: descendants of c, right: ancestors
+ ON (l.parent = c AND c = r.child AND l.child != l.parent); -- Left: descendants of c, right: ancestors
END;
//
--
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