Please apply patches for contrib/ltree.

ltree_73.patch.gz - for 7.3 :
        Fix ~ operation bug: eg '1.1.1' ~ '*.1'

ltree_74.patch.gz - for current CVS
    Fix ~ operation bug: eg '1.1.1' ~ '*.1'
    Add ? operation
    Optimize index storage

Last change needs drop/create all ltree indexes, so only for 7.4

Teodor Sigaev

contrib/ltree/README.ltree

@@ -426,6 +426,8 @@ appreciate your input. So far, below some (rather obvious) results:
 
 CHANGES
 
+Feb 7, 2003
+   Fix ~ operation bug: eg '1.1.1' ~ '*.1'
 Aug 9, 2002
    Fixed very stupid but important bug :-)
 July 31, 2002

contrib/ltree/expected/ltree.out

@@ -3071,9 +3071,17 @@ SELECT * FROM ltreetest WHERE t ~ '*.1' order by t asc;
                t                
 --------------------------------
  1
+ 1.1
+ 1.1.1
+ 1.1.1.1
+ 1.1.1.2.1
+ 1.1.2.1
+ 1.26.15.23.5.31.29.11.19.28.1
+ 10.13.22.1.8.30.9.24.1.2.1
  10.22.1
  10.26.30.15.1
  11.1
+ 12.1.1
  17.25.2.13.10.27.13.1
  18.13.6.12.26.26.26.29.18.20.1
  19.20.25.7.27.28.27.17.9.3.1
@@ -3083,6 +3091,7 @@ SELECT * FROM ltreetest WHERE t ~ '*.1' order by t asc;
  21.18.2.1
  21.23.17.8.23.11.8.1
  22.30.31.24.23.22.5.20.28.1
+ 23.17.22.1.23.4.29.32.4.1
  23.28.1
  23.3.32.21.5.14.10.17.1
  25.6.12.16.1
@@ -3095,14 +3104,15 @@ SELECT * FROM ltreetest WHERE t ~ '*.1' order by t asc;
  8.2.18.23.5.16.17.1
  8.32.30.1
  9.21.20.29.1
-(25 rows)
+(34 rows)
 
 SELECT * FROM ltreetest WHERE t ~ '23.*.1' order by t asc;
              t             
--------------------------
+---------------------------
+ 23.17.22.1.23.4.29.32.4.1
  23.28.1
  23.3.32.21.5.14.10.17.1
-(2 rows)
+(3 rows)
 
 SELECT * FROM ltreetest WHERE t ~ '23.*{1}.1' order by t asc;
     t    
@@ -7266,9 +7276,17 @@ SELECT * FROM ltreetest WHERE t ~ '*.1' order by t asc;
                t                
 --------------------------------
  1
+ 1.1
+ 1.1.1
+ 1.1.1.1
+ 1.1.1.2.1
+ 1.1.2.1
+ 1.26.15.23.5.31.29.11.19.28.1
+ 10.13.22.1.8.30.9.24.1.2.1
  10.22.1
  10.26.30.15.1
  11.1
+ 12.1.1
  17.25.2.13.10.27.13.1
  18.13.6.12.26.26.26.29.18.20.1
  19.20.25.7.27.28.27.17.9.3.1
@@ -7278,6 +7296,7 @@ SELECT * FROM ltreetest WHERE t ~ '*.1' order by t asc;
  21.18.2.1
  21.23.17.8.23.11.8.1
  22.30.31.24.23.22.5.20.28.1
+ 23.17.22.1.23.4.29.32.4.1
  23.28.1
  23.3.32.21.5.14.10.17.1
  25.6.12.16.1
@@ -7290,14 +7309,15 @@ SELECT * FROM ltreetest WHERE t ~ '*.1' order by t asc;
  8.2.18.23.5.16.17.1
  8.32.30.1
  9.21.20.29.1
-(25 rows)
+(34 rows)
 
 SELECT * FROM ltreetest WHERE t ~ '23.*.1' order by t asc;
              t             
--------------------------
+---------------------------
+ 23.17.22.1.23.4.29.32.4.1
  23.28.1
  23.3.32.21.5.14.10.17.1
-(2 rows)
+(3 rows)
 
 SELECT * FROM ltreetest WHERE t ~ '23.*{1}.1' order by t asc;
     t    
@@ -7372,13 +7392,13 @@ SELECT count(*) FROM _ltreetest WHERE t ~ '1.1.1.*' ;
 SELECT count(*) FROM _ltreetest WHERE t ~ '*.1' ;
  count 
 -------
-    83
+   109
 (1 row)
 
 SELECT count(*) FROM _ltreetest WHERE t ~ '23.*.1' ;
  count 
 -------
-    10
+    11
 (1 row)
 
 SELECT count(*) FROM _ltreetest WHERE t ~ '23.*{1}.1' ;
@@ -7416,13 +7436,13 @@ SELECT count(*) FROM _ltreetest WHERE t ~ '1.1.1.*' ;
 SELECT count(*) FROM _ltreetest WHERE t ~ '*.1' ;
  count 
 -------
-    83
+   109
 (1 row)
 
 SELECT count(*) FROM _ltreetest WHERE t ~ '23.*.1' ;
  count 
 -------
-    10
+    11
 (1 row)
 
 SELECT count(*) FROM _ltreetest WHERE t ~ '23.*{1}.1' ;

contrib/ltree/lquery_op.c

@@ -117,6 +117,11 @@ printFieldNot(FieldNot *fn ) {
 }
 */
 
+static struct {
+	bool muse;
+	uint32	high_pos;
+} SomeStack = {false,0,};
+
 static bool
 checkCond(lquery_level * curq, int query_numlevel, ltree_level * curt, int tree_numlevel, FieldNot * ptr)
 {
@@ -129,6 +134,14 @@ checkCond(lquery_level * curq, int query_numlevel, ltree_level * curt, int tree_
 	lquery_level *prevq = NULL;
 	ltree_level *prevt = NULL;
 
+	if ( SomeStack.muse ) {
+		high_pos = SomeStack.high_pos;
+		qlen--;
+		prevq = curq;
+		curq = LQL_NEXT(curq);
+		SomeStack.muse = false;
+	}
+
 	while (tlen > 0 && qlen > 0)
 	{
 		if (curq->numvar)
@@ -181,6 +194,15 @@ checkCond(lquery_level * curq, int query_numlevel, ltree_level * curt, int tree_
 					curt = LEVEL_NEXT(curt);
 					tlen--;
 					cur_tpos++;
+					if ( isok && prevq && prevq->numvar==0 && tlen>0 && cur_tpos <= high_pos ) {
+						FieldNot tmpptr;
+						if ( ptr )
+							memcpy(&tmpptr,ptr,sizeof(FieldNot));
+						SomeStack.high_pos = high_pos-cur_tpos;
+						SomeStack.muse = true;
+						if ( checkCond(prevq, qlen+1, curt, tlen, (ptr) ? &tmpptr : NULL) )
+							return true;
+					}
 					if (!isok && ptr)
 						ptr->nt++;
 				}