SQLite 中 FIND_IN_SET 的替代方案？

Question

在Mysql中，

FIND_IN_SET

用于查找集合中的值。我在 SQLite 中尝试过

FIND_IN_SET

，但它不是 SQL 关键字。我用谷歌搜索过，但没有得到答案。如果有人知道，请告诉我 SQLite 中

FIND_IN_SET

的替代方案。

Answer 1

如果您只需要 true / false 值而不是索引，那么您可以使用

LIKE

子句：

(',' || column_name || ',') LIKE '%,value,%'

Answer 2

我们可以将查询之类的更改写入hibernate critearea

我的旧查询

select * FROM game_detail WHERE content_id=176 and FIND_IN_SET(12,group_master_id)

新查询

select * 
  FROM game_detail
 WHERE content_id=176
   and (group_master_id LIKE '%12,%'|| group_master_id LIKE '%,12,'|| group_master_id LIKE '%12')

Answer 3

可能我迟到了，但是有 instr(X,Y) 函数 https://www.sqlite.org/lang_corefunc.html#instr

我用它来设置行的顺序 UPDATE table SET row_order = instr('321', rowid) WHERE rowid in (1,2,3)

Answer 4

这是我的旧查询

String query = "SELECT a.content_id,a.content_name,a.image_name,a.image_path,a.rating,d.content_type_name"
                + "from content_master a, category_content_mapping b, "
                + "game_detail c, content_type_master d "
                    + "where a.content_id=b.content_id "
                + "and c.content_id = a.content_id "
                + "and a.content_type_id = d.content_type_id "
                + "and b.category_id = '" + category_id + "' "
                + "and find_in_set('" + group_master_id + "',c.group_master_id) "
                + "and a.is_active='Y' and b.is_active = 'Y' and c.is_active = 'Y'"
                + "order by b.content_mapping_id DESC limit 0,3";

休眠中使用的标准，例如 find_in_set 的替代

    Session session=new Configuration().configure().buildSessionFactory().openSession();
    Criteria criteria=session.createCriteria(ContentMaster.class);
     criteria.setFetchMode("CategoryContentMapping", FetchMode.JOIN);
    criteria.setFetchMode("GameDetail", FetchMode.JOIN);
    criteria.createAlias("categoryContentMappings","cat");
     criteria.createAlias("contentTypeMaster", "ctm");
    criteria.createAlias("gameDetails","game");
    criteria.add(Restrictions.eq("cat.categoryMaster.categoryMasterId", 9));

    criteria.add(Restrictions.disjunction()
    .add(Restrictions.like("game.groupMasterId","%12,%"))
    .add(Restrictions.like("game.groupMasterId","%,12,%"))
    .add(Restrictions.like("game.groupMasterId","%12%")));
    criteria.add(Restrictions.eq("isActive", "y"));
    criteria.add(Restrictions.eq("cat.isActive", "y"));
    criteria.add(Restrictions.eq("ctm.isActive", "y"));
    criteria.addOrder(Order.desc("cat.contentMappingId"));