jrgemignani commented on code in PR #895:
URL: https://github.com/apache/age/pull/895#discussion_r1189159431
##########
regress/expected/expr.out:
##########
@@ -1667,6 +1667,135 @@ SELECT agtype_in('[NaN, {"e": 2.718281::numeric, "one":
Infinity, "pie": 3.14159
[NaN, {"e": 2.718281::numeric, "one": Infinity, "pie": 3.1415927},
2::numeric, null]
(1 row)
+--
+-- Test typecast ::pg_float8
+--
+SELECT * FROM cypher('expr', $$
+RETURN 0::pg_float8
+$$) AS r(result agtype);
+ result
+--------
+ 0.0
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN '2.71'::pg_float8
+$$) AS r(result agtype);
+ result
+--------
+ 2.71
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN 2.71::pg_float8
+$$) AS r(result agtype);
+ result
+--------
+ 2.71
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN ([0, {one: 1, pie: 3.1415927, e: 2::numeric}, 2,
null][1].one)::pg_float8
+$$) AS r(result agtype);
+ result
+--------
+ 1.0
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN ([0, {one: 1::pg_float8, pie: 3.1415927, e: 2.718281::numeric}, 2,
null][1].one)
+$$) AS r(result agtype);
+ result
+--------
+ 1.0
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN ([0, {one: 1::pg_float8, pie: 3.1415927, e: 2.718281::numeric}, 2,
null][1].one)::float
+$$) AS r(result agtype);
+ result
+--------
+ 1.0
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN ([0, {one: 1, pie: 3.1415927, e: 2.718281::numeric}, 2,
null][3])::pg_float8
+$$) AS r(result agtype);
+ result
+--------
+
+(1 row)
+
+-- test NaN, Infinity and -Infinity
+SELECT * FROM cypher('expr', $$
+RETURN 'NaN'::pg_float8
+$$) AS r(result agtype);
+ result
+--------
+ NaN
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN 'inf'::pg_float8
+$$) AS r(result agtype);
+ result
+----------
+ Infinity
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN '-inf'::pg_float8
+$$) AS r(result agtype);
+ result
+-----------
+ -Infinity
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN 'infinity'::pg_float8
+$$) AS r(result agtype);
+ result
+----------
+ Infinity
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN '-infinity'::pg_float8
+$$) AS r(result agtype);
+ result
+-----------
+ -Infinity
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN null::pg_float8
+$$) AS r(result agtype);
+ result
+--------
+
+(1 row)
+
+-- these should fail
+SELECT * FROM cypher('expr', $$
+RETURN ''::pg_float8
+$$) AS r(result agtype);
+ERROR: invalid input syntax for type double precision: ""
+SELECT * FROM cypher('expr', $$
+RETURN '2:71'::pg_float8
+$$) AS r(result agtype);
+ERROR: invalid input syntax for type double precision: "2:71"
+SELECT * FROM cypher('expr', $$
+RETURN 'infi'::pg_float8
+$$) AS r(result agtype);
+ERROR: invalid input syntax for type double precision: "infi"
+SELECT * FROM cypher('expr', $$
Review Comment:
Should this fail or does it need to be in a different group?
##########
regress/expected/expr.out:
##########
@@ -1667,6 +1667,135 @@ SELECT agtype_in('[NaN, {"e": 2.718281::numeric, "one":
Infinity, "pie": 3.14159
[NaN, {"e": 2.718281::numeric, "one": Infinity, "pie": 3.1415927},
2::numeric, null]
(1 row)
+--
+-- Test typecast ::pg_float8
+--
+SELECT * FROM cypher('expr', $$
+RETURN 0::pg_float8
+$$) AS r(result agtype);
+ result
+--------
+ 0.0
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN '2.71'::pg_float8
+$$) AS r(result agtype);
+ result
+--------
+ 2.71
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN 2.71::pg_float8
+$$) AS r(result agtype);
+ result
+--------
+ 2.71
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN ([0, {one: 1, pie: 3.1415927, e: 2::numeric}, 2,
null][1].one)::pg_float8
+$$) AS r(result agtype);
+ result
+--------
+ 1.0
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN ([0, {one: 1::pg_float8, pie: 3.1415927, e: 2.718281::numeric}, 2,
null][1].one)
+$$) AS r(result agtype);
+ result
+--------
+ 1.0
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN ([0, {one: 1::pg_float8, pie: 3.1415927, e: 2.718281::numeric}, 2,
null][1].one)::float
+$$) AS r(result agtype);
+ result
+--------
+ 1.0
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+RETURN ([0, {one: 1, pie: 3.1415927, e: 2.718281::numeric}, 2,
null][3])::pg_float8
Review Comment:
what about casting a numeric?
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