pply quote_literal to the start_with argument of connectby. Fixes problem

reported by David Garamond when working with bytea parent and child keys.

1 files changed, 21 insertions, 2 deletions

diff --git a/contrib/tablefunc/tablefunc.c b/contrib/tablefunc/tablefunc.c
index 4fd3846820b..cc8fd613a47 100644
--- a/contrib/tablefunc/tablefunc.c
+++ b/contrib/tablefunc/tablefunc.c
@@ -66,6 +66,7 @@ static Tuplestorestate *build_tuplestore_recursively(char *key_fld,
 							 MemoryContext per_query_ctx,
 							 AttInMetadata *attinmeta,
 							 Tuplestorestate *tupstore);
+static char *quote_literal_cstr(char *rawstr);
 
 typedef struct
 {
@@ -779,12 +780,12 @@ build_tuplestore_recursively(char *key_fld,
 		return tupstore;
 
 	/* Build initial sql statement */
-	appendStringInfo(sql, "SELECT %s, %s FROM %s WHERE %s = '%s' AND %s IS NOT NULL",
+	appendStringInfo(sql, "SELECT %s, %s FROM %s WHERE %s = %s AND %s IS NOT NULL",
 					 key_fld,
 					 parent_key_fld,
 					 relname,
 					 parent_key_fld,
-					 start_with,
+					 quote_literal_cstr(start_with),
 					 key_fld);
 
 	/* Retrieve the desired rows */
@@ -1087,3 +1088,21 @@ make_crosstab_tupledesc(TupleDesc spi_tupdesc, int num_catagories)
 
 	return tupdesc;
 }
+
+/*
+ * Return a properly quoted literal value.
+ * Uses quote_literal in quote.c
+ */
+static char *
+quote_literal_cstr(char *rawstr)
+{
+	text	   *rawstr_text;
+	text	   *result_text;
+	char	   *result;
+
+	rawstr_text = DatumGetTextP(DirectFunctionCall1(textin, CStringGetDatum(rawstr)));
+	result_text = DatumGetTextP(DirectFunctionCall1(quote_literal, PointerGetDatum(rawstr_text)));
+	result = DatumGetCString(DirectFunctionCall1(textout, PointerGetDatum(result_text)));
+
+	return result;
+}