Fix odbc:param_query/3 and odbc:param_query/4.

Issue: Calling odbc:param_query/3 and odbc:param_query/4 with unparameterized query string and empty parameters list causes error in pattern matching in function param_values/1.

This patch fixes this problem and allow to do things such as
 odbc:param_query(ConRef, "select * from some_table", []).

1 files changed, 3 insertions, 1 deletions

diff --git a/lib/odbc/src/odbc.erl b/lib/odbc/src/odbc.erl
index 3eabec9ec3..dde96907e5 100644
--- a/lib/odbc/src/odbc.erl
+++ b/lib/odbc/src/odbc.erl
@@ -902,7 +902,9 @@ param_values(Params) ->
 	[{_, Values} | _] -> 
 	    Values;
 	[{_, _, Values} | _] -> 
-	    Values
+	    Values;
+	[] -> 
+	    []
     end.
 
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