fix(sql): support sqlc.arg in ORDER BY expressions

Author: mujib77

internal/sql/rewrite/parameters_test.go

@@ -0,0 +1,39 @@
+package rewrite
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/sqlc-dev/sqlc/internal/config"
+	"github.com/sqlc-dev/sqlc/internal/engine/postgresql"
+)
+
+func TestNamedParametersInOrderBy(t *testing.T) {
+	query := `
+SELECT ID
+FROM Sequence
+WHERE SeriesID = sqlc.arg(series_id)
+ORDER BY (Name = sqlc.arg(name)) DESC, ID
+LIMIT 1;
+`
+
+	p := postgresql.NewParser()
+
+	stmts, err := p.Parse(strings.NewReader(query))
+	if err != nil {
+		t.Fatal(err)
+	}
+
+raw := stmts[0].Raw
+
+_, params, _ := NamedParameters(
+	config.EngineSQLite,
+	raw,
+	map[int]bool{},
+	false,
+)
+
+if params == nil {
+	t.Fatalf("params should not be nil")
+}
+}