Support text array parameters

Author: Nathan Gabrielson

server/doltgres_handler.go

@@ -26,6 +26,7 @@ import (
 	"regexp"
 	"runtime/trace"
 	"strconv"
+	"strings"
 	"sync"
 	"time"
 
@@ -413,6 +414,22 @@ func (h *DoltgresHandler) convertBindParameterToString(typ uint32, value []byte,
 			s := u.String()
 			bindVarString = &s
 		}
+	case typ == pgtype.TextArrayOID && isBinaryFormat:
+		if value != nil {
+			m := pgtype.NewMap()
+			var textArray []string
+			scanPlan := m.PlanScan(pgtype.TextArrayOID, pgtype.BinaryFormatCode, &textArray)
+			err = scanPlan.Scan(value, &textArray)
+			if err != nil {
+				return nil, err
+			}
+			quotedArray := make([]string, len(textArray))
+			for i, v := range textArray {
+				quotedArray[i] = `"` + strings.ReplaceAll(v, `"`, `\"`) + `"`
+			}
+			formattedArray := "{" + strings.Join(quotedArray, ",") + "}"
+			bindVarString = &formattedArray
+		}
 	default:
 		// For text format or types that can handle binary-to-string conversion
 		if err := h.pgTypeMap.Scan(typ, formatCode, value, &bindVarString); err != nil {

testing/go/binding_test.go

@@ -15,6 +15,7 @@
 package _go
 
 import (
+	"github.com/jackc/pgx/v5/pgtype"
 	"strconv"
 	"testing"
 
@@ -46,3 +47,25 @@ func TestBindingWithOidZero(t *testing.T) {
 	result := resultReader.Read()
 	require.NoError(t, result.Err)
 }
+
+func TestBindingWithTextArray(t *testing.T) {
+	ctx, connection, controller := CreateServer(t, "postgres")
+	defer controller.Stop()
+	conn := connection.Default
+
+	m := pgtype.NewMap()
+	textArray := []string{"foo", "bar"}
+
+	plan := m.PlanEncode(pgtype.TextArrayOID, pgtype.BinaryFormatCode, textArray)
+	encodedArr, err := plan.Encode(textArray, nil)
+	require.NoError(t, err)
+
+	args := [][]byte{encodedArr}
+	paramOIDs := []uint32{1009}
+	paramFormats := []int16{1}
+	sql := "SELECT $1::text[]"
+
+	resultReader := conn.PgConn().ExecParams(ctx, sql, args, paramOIDs, paramFormats, nil)
+	result := resultReader.Read()
+	require.NoError(t, result.Err)
+}