internal/dinosql: Add DATE support

Author: kyleconroy

internal/dinosql/gen.go

@@ -552,7 +552,7 @@ func (r Result) goInnerType(col core.Column) string {
 	case "bytea", "blob", "pg_catalog.bytea":
 		return "[]byte"
 
-	case "pg_catalog.timestamp", "pg_catalog.timestamptz", "timestamptz":
+	case "pg_catalog.timestamp", "pg_catalog.timestamptz", "timestamptz", "date":
 		if notNull {
 			return "time.Time"
 		}

internal/dinosql/gen_test.go

@@ -97,6 +97,7 @@ func TestInnerType(t *testing.T) {
 		"integer":         "int32",
 		"int":             "int32",
 		"pg_catalog.int4": "int32",
+		"date":            "time.Time",
 	}
 	for k, v := range types {
 		dbType := k
@@ -117,6 +118,7 @@ func TestNullInnerType(t *testing.T) {
 		"integer":         "sql.NullInt32",
 		"int":             "sql.NullInt32",
 		"pg_catalog.int4": "sql.NullInt32",
+		"date":            "sql.NullTime",
 	}
 	for k, v := range types {
 		dbType := k

internal/dinosql/query_test.go

@@ -813,6 +813,18 @@ func TestQueries(t *testing.T) {
 				SQL: "SELECT a, b, c, d FROM foo, bar",
 			},
 		},
+		{
+			"date",
+			`
+			CREATE TABLE users ( birthday DATE );
+			SELECT birthday FROM users;
+			`,
+			Query{
+				Columns: []core.Column{
+					{Table: public("users"), Name: "birthday", DataType: "date"},
+				},
+			},
+		},
 	} {
 		test := tc
 		t.Run(test.name, func(t *testing.T) {