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-rw-r--r--database/database.pgsql3
1 files changed, 2 insertions, 1 deletions
diff --git a/database/database.pgsql b/database/database.pgsql
index 3abb1fa1a..2bb1095d0 100644
--- a/database/database.pgsql
+++ b/database/database.pgsql
@@ -705,7 +705,8 @@ CREATE INDEX term_data_vid_idx ON term_data(vid);
CREATE TABLE term_hierarchy (
tid integer NOT NULL default '0',
- parent integer NOT NULL default '0'
+ parent integer NOT NULL default '0',
+ PRIMARY KEY (tid, parent)
);
CREATE INDEX term_hierarchy_tid_idx ON term_hierarchy(tid);
CREATE INDEX term_hierarchy_parent_idx ON term_hierarchy(parent);