[go-zero] 子查询,使用到Squirrel包

使用到

实现sql：

SELECT count(1) FROM (SELECT 1 FROM tb_map_total WHERE deleted = 0 AND seasonId IN (1000016) AND stageIdList IN ('10008','10007') GROUP BY useMapId) AS tmp

	subBuilder := squirrel.Select("1").From(m.table).Where(squirrel.Eq{"deleted": 0})
	if len(seasonIdList) > 0 {
		subBuilder = subBuilder.Where(squirrel.Eq{"seasonId": seasonIdList})
	}
	if len(stageIdList) > 0 {
		subBuilder = subBuilder.Where(squirrel.Eq{"stageIdList": stageIdList})
	}
	subBuilder = subBuilder.GroupBy("useMapId")

	builder := squirrel.Select("count(1)").FromSelect(subBuilder, "tmp")

	sql, args, err := builder.ToSql()

	if err != nil {
		return 0
	}

	var resp int64

	err = m.conn.QueryRowCtx(ctx, &resp, sql, args...)

	switch err {
	case nil:
		return resp
	default:
		return 0
	}