fix: When both -Q and -q are specified, take -Q input and finish (#547)

cmd/sqlcmd/sqlcmd.go

@@ -811,11 +811,11 @@ func run(vars *sqlcmd.Variables, args *SQLCmdArguments) (int, error) {
 
 	if err == nil && s.Exitcode == 0 {
 		once := false
-		if args.InitialQuery != "" {
-			s.Query = args.InitialQuery
-		} else if args.Query != "" {
+		if args.Query != "" {
 			once = true
 			s.Query = args.Query
+		} else if args.InitialQuery != "" {
+			s.Query = args.InitialQuery
 		}
 		iactive := args.InputFile == nil && args.Query == ""
 		if iactive || s.Query != "" {

cmd/sqlcmd/sqlcmd_test.go

@@ -361,6 +361,34 @@ func TestQueryAndExit(t *testing.T) {
 	}
 }
 
+func TestInitQueryAndQueryExecutesQuery(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Errorf("Panic occurred: %v", r)
+		}
+	}()
+	o, err := os.CreateTemp("", "sqlcmdmain")
+	assert.NoError(t, err, "os.CreateTemp")
+	defer os.Remove(o.Name())
+	defer o.Close()
+	args = newArguments()
+	args.InitialQuery = "SELECT 1"
+	args.Query = "SELECT 2"
+	args.OutputFile = o.Name()
+	vars := sqlcmd.InitializeVariables(args.useEnvVars())
+	vars.Set(sqlcmd.SQLCMDMAXVARTYPEWIDTH, "0")
+
+	setVars(vars, &args)
+
+	exitCode, err := run(vars, &args)
+	assert.NoError(t, err, "run")
+	assert.Equal(t, 0, exitCode, "exitCode")
+	bytes, err := os.ReadFile(o.Name())
+	if assert.NoError(t, err, "os.ReadFile") {
+		assert.Equal(t, "2"+sqlcmd.SqlcmdEol+sqlcmd.SqlcmdEol+oneRowAffected+sqlcmd.SqlcmdEol, string(bytes), "Incorrect output from run")
+	}
+}
+
 // Test to verify fix for issue: https://github.com/microsoft/go-sqlcmd/issues/98
 //  1. Verify when -b is passed in (ExitOnError), we don't always get an error (even when input is good)
 //     2, Verify when the input is actually bad, we do get an error