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authorEelco Dolstra <e.dolstra@tudelft.nl>2010-02-24T14·39+0000
committerEelco Dolstra <e.dolstra@tudelft.nl>2010-02-24T14·39+0000
commit6baa2a2f5ef5b11859b95f453338efaf7c5b2724 (patch)
tree9614f430442178147d3026b77ff773750383d877
parent9fd85c94de90ec91ccf8a4bf04e8911e6e3e483b (diff)
-rw-r--r--src/libstore/schema.sql2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libstore/schema.sql b/src/libstore/schema.sql
index 4adad34b700e..7438632edbd9 100644
--- a/src/libstore/schema.sql
+++ b/src/libstore/schema.sql
@@ -22,7 +22,7 @@ create index if not exists IndexReference on Refs(reference);
 -- ValidPaths to cause a foreign key constraint violation (due to `on
 -- delete restrict' on the `reference' column).  Therefore, explicitly
 -- get rid of self-references.
-create trigger DeleteSelfRefs before delete on ValidPaths
+create trigger if not exists DeleteSelfRefs before delete on ValidPaths
   begin
     delete from Refs where referrer = old.id and reference = old.id;
   end;