diff --git a/src/Query/ADQL_parser.hxx b/src/Query/ADQL_parser.hxx
index 2dcb681..1c147e9 100644
--- a/src/Query/ADQL_parser.hxx
+++ b/src/Query/ADQL_parser.hxx
@@ -230,6 +230,10 @@ struct ADQL_parser : boost::spirit::qi::grammar<std::string::const_iterator,
                             boost::spirit::ascii::space_type>
             cast_function;
 
+    boost::spirit::qi::rule<std::string::const_iterator, ADQL::Position_Function(),
+                            boost::spirit::ascii::space_type>
+            position_function;
+
     boost::spirit::qi::rule<std::string::const_iterator, ADQL::User_Defined_Function(),
                             boost::spirit::ascii::space_type>
             user_defined_function;
diff --git a/src/Query/ADQL_parser/ADQL_parser/init_factor.cxx b/src/Query/ADQL_parser/ADQL_parser/init_factor.cxx
index 714993e..8aba013 100644
--- a/src/Query/ADQL_parser/ADQL_parser/init_factor.cxx
+++ b/src/Query/ADQL_parser/ADQL_parser/init_factor.cxx
@@ -172,11 +172,17 @@ void ADQL_parser::init_factor() {
                           -('(' > unsigned_integer > ')') >> ')'];
     cast_function.name("cast_function");
 
+    position_function %=
+            hold[ascii::no_case["POSITION"] >> '(' >> character_string_literal >>
+                 &no_skip[boost::spirit::qi::space] >> ascii::no_case["IN"] >>
+                 &no_skip[boost::spirit::qi::space] >> column_reference >> ')'];
+    position_function.name("position_function");
+
     // FIXME: numeric_value_function should have
     // numeric_geometry_function
     numeric_value_function %= trig_function | math_function | cast_function |
-                              non_predicate_geometry_function | user_defined_function |
-                              sql_no_arg_function;
+                              position_function | non_predicate_geometry_function |
+                              user_defined_function | sql_no_arg_function;
     numeric_value_function.name("numeric_value_function");
     // Flipped the order here, because a value_expression can match a
     // function name.
@@ -214,6 +220,7 @@ void ADQL_parser::init_factor() {
     BOOST_SPIRIT_DEBUG_NODE(user_defined_function_param);
     BOOST_SPIRIT_DEBUG_NODE(user_defined_function);
     BOOST_SPIRIT_DEBUG_NODE(cast_function);
+    BOOST_SPIRIT_DEBUG_NODE(position_function);
     BOOST_SPIRIT_DEBUG_NODE(numeric_value_function);
     BOOST_SPIRIT_DEBUG_NODE(numeric_primary);
     BOOST_SPIRIT_DEBUG_NODE(factor);
diff --git a/src/Query/Query_Specification/Factor/Numeric_Primary/Numeric_Value_Function.hxx b/src/Query/Query_Specification/Factor/Numeric_Primary/Numeric_Value_Function.hxx
index 8a47556..d985062 100644
--- a/src/Query/Query_Specification/Factor/Numeric_Primary/Numeric_Value_Function.hxx
+++ b/src/Query/Query_Specification/Factor/Numeric_Primary/Numeric_Value_Function.hxx
@@ -4,6 +4,7 @@
 #include "../../User_Defined_Function_Wrap.hxx"
 #include "Numeric_Value_Function/Cast_Function.hxx"
 #include "Numeric_Value_Function/Math_Function.hxx"
+#include "Numeric_Value_Function/Position_Function.hxx"
 #include "Numeric_Value_Function/Trig_Function.hxx"
 
 #include <boost/variant.hpp>
@@ -12,8 +13,8 @@ namespace ADQL {
 class Numeric_Value_Function {
 public:
     typedef boost::variant<Trig_Function, Math_Function, Cast_Function,
-                           Non_Predicate_Geometry_Function, User_Defined_Function_Wrap,
-                           std::string>
+                           Position_Function, Non_Predicate_Geometry_Function,
+                           User_Defined_Function_Wrap, std::string>
             Variant;
     Variant variant;
     bool empty() const;
diff --git a/test/parse_adql.cxx b/test/parse_adql.cxx
index 5a72a09..05f3aab 100644
--- a/test/parse_adql.cxx
+++ b/test/parse_adql.cxx
@@ -744,7 +744,17 @@ int main(int argc, char *argv[]) {
             // IRSA-5506 CAST as public.GEOGRAPHY
             "SELECT ST_Distance(CAST(ST_Point(22.81210,-16.78450) AS "
             "public.GEOGRAPHY), "
-            "COALESCE(p.poly, p.pt), 'f') as dist_to_point_meters FROM caom.plane p"
+            "COALESCE(p.poly, p.pt), 'f') as dist_to_point_meters FROM caom.plane p",
+
+            // IRSA-7432 POSITION(string IN column_value)
+            "SELECT CASE WHEN POSITION('s3.amazonaws.com' IN a.uri) > 0 THEN a.uri "
+            "ELSE 'https://bacchus1.ipac.caltech.edu/' || regexp_replace(a.uri, "
+            "'https.*edu/', '') END as access_url FROM caom.artifact a",
+
+            "SELECT POSITION('s3.amazonaws.com' IN a.uri) AS pos FROM caom.artifact a",
+
+            "SELECT artifactid FROM caom.artifact a WHERE POSITION('s3.amazonaws.com' "
+            "IN a.uri) > 0"
 
 #endif  // RUN_ALL
     };