add tests for a NUMERIC column that is converted as a DOUBLE because …

…no typmod is present
duckdb · May 12, 2024 · 50ba4f8 · 50ba4f8
1 parent b6a79e1
commit 50ba4f8
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diff --git a/expected/type_support.out b/expected/type_support.out
@@ -117,6 +117,29 @@ SELECT * FROM float8_tbl;
  4.582345020342342e+20
 (3 rows)
 
+-- NUMERIC as DOUBLE
+CREATE TABLE numeric_as_double(a NUMERIC);
+INSERT INTO numeric_as_double SELECT a FROM (VALUES
+	(0.234234234),
+	(NULL),
+	(458234502034234234234.000012)
+) t(a);
+select pg_typeof(a) from numeric_as_double;
+ pg_typeof 
+-----------
+ numeric
+ numeric
+ numeric
+(3 rows)
+
+SELECT * FROM numeric_as_double;
+              a               
+------------------------------
+                  0.234234234
+
+ 458234502034234234234.000012
+(3 rows)
+
 DROP TABLE chr;
 DROP TABLE small;
 DROP TABLE intgr;
@@ -126,3 +149,4 @@ DROP TABLE date_tbl;
 DROP TABLE timestamp_tbl;
 DROP TABLE float4_tbl;
 DROP TABLE float8_tbl;
+DROP TABLE numeric_as_double;
diff --git a/sql/type_support.sql b/sql/type_support.sql
@@ -57,6 +57,16 @@ INSERT INTO float8_tbl SELECT CAST(a AS FLOAT8) FROM (VALUES
 ) t(a);
 SELECT * FROM float8_tbl;
 
+-- NUMERIC as DOUBLE
+CREATE TABLE numeric_as_double(a NUMERIC);
+INSERT INTO numeric_as_double SELECT a FROM (VALUES
+	(0.234234234),
+	(NULL),
+	(458234502034234234234.000012)
+) t(a);
+select pg_typeof(a) from numeric_as_double;
+SELECT * FROM numeric_as_double;
+
 DROP TABLE chr;
 DROP TABLE small;
 DROP TABLE intgr;
@@ -66,3 +76,4 @@ DROP TABLE date_tbl;
 DROP TABLE timestamp_tbl;
 DROP TABLE float4_tbl;
 DROP TABLE float8_tbl;
+DROP TABLE numeric_as_double;