From 4ebf1d2e0baa87ab6afbbf6a0947c9fb8a30e9d4 Mon Sep 17 00:00:00 2001
From: Jack Christensen <jack@jackchristensen.com>
Date: Sat, 18 Jul 2020 08:44:57 -0500
Subject: [PATCH] Passthrough all parameters directly to pgx

---
 stdlib/sql.go      | 5 +++++
 stdlib/sql_test.go | 9 +++++++++
 2 files changed, 14 insertions(+)

diff --git a/stdlib/sql.go b/stdlib/sql.go
index a45750ac..a1e966eb 100644
--- a/stdlib/sql.go
+++ b/stdlib/sql.go
@@ -373,6 +373,11 @@ func (c *Conn) Ping(ctx context.Context) error {
 	return c.conn.Ping(ctx)
 }
 
+func (c *Conn) CheckNamedValue(*driver.NamedValue) error {
+	// Underlying pgx supports sql.Scanner and driver.Valuer interfaces natively. So everything can be passed through directly.
+	return nil
+}
+
 type Stmt struct {
 	sd   *pgconn.StatementDescription
 	conn *Conn
diff --git a/stdlib/sql_test.go b/stdlib/sql_test.go
index 87d82943..bceb54a0 100644
--- a/stdlib/sql_test.go
+++ b/stdlib/sql_test.go
@@ -321,6 +321,15 @@ func TestConnQueryFailure(t *testing.T) {
 	})
 }
 
+func TestConnSimpleSlicePassThrough(t *testing.T) {
+	testWithAndWithoutPreferSimpleProtocol(t, func(t *testing.T, db *sql.DB) {
+		var n int64
+		err := db.QueryRow("select cardinality($1::text[])", []string{"a", "b", "c"}).Scan(&n)
+		require.NoError(t, err)
+		assert.EqualValues(t, 3, n)
+	})
+}
+
 // Test type that pgx would handle natively in binary, but since it is not a
 // database/sql native type should be passed through as a string
 func TestConnQueryRowPgxBinary(t *testing.T) {