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错题集 数据思维刷题中答错的题目
| 模块 | 知识点 | 题目 | 你的答案 | 正确答案 | 操作 |
|---|---|---|---|---|---|
| 业务决策 | 特殊人为策略在Feed流中的作用 | 如何优化多内容类型推荐? | D | B | 重做 |
收藏
| 收藏日期 | 题目名称 | 解决状态 |
|---|---|---|
| 2025-09-03 | 海王发红包 | 已解决 |
评论笔记
| 评论日期 | 题目名称 | 评论内容 | 站长评论 |
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提交记录
| 提交日期 | 题目名称 | 提交代码 |
|---|---|---|
| 2026-06-10 | 条件过滤(1)异地男友有异常,数分闺蜜来帮忙  |
select * from cmb_usr_trx_rcd where trx_time between '2024-09-01 00:00:00' and '2024-09-30 23:59:59' and usr_id = 5201314520 |
| 2026-06-10 | 条件过滤(1)异地男友有异常,数分闺蜜来帮忙  |
select * from cmb_usr_trx_rcd where trx_time between '2024-09-01 00:00:00' and '2024-09-30 23:59:59' |
| 2026-06-10 | 条件过滤(1)异地男友有异常,数分闺蜜来帮忙  |
select * from cmb_usr_trx_rcd where trx_time between '2024-09-01 00:00:00' and '2024-09-30 23:59:59' limit 5; |
| 2025-09-03 | 美狗计  |
select replace(song_name,'人','狗') as new_song_name from song_info where song_name like '%人%' |
| 2025-09-03 | 按歌手名字字符长度统计歌手个数  |
select length (singer_name) ,count(singer_id) countfrom singer_info group by length (singer_name) |
| 2025-09-03 | 统计字符长度  |
select singer_name, char_length(singer_name) as len from singer_info |
| 2025-09-03 | 歌手名字大写  |
select upper(singer_name) as uppered_name from singer_info |
| 2025-09-03 | 海王发红包  |
SELECT snd_usr_id FROM tx_red_pkt_rcd GROUP BY snd_usr_id HAVING COUNT(CASE WHEN pkt_amt IN (520,200) THEN 1 END) >=5 |
| 2025-09-03 | 海王发红包  |
SELECT snd_usr_id FROM tx_red_pkt_rcd WHERE pkt_amt IN (200, 520) GROUP BY snd_usr_id HAVING COUNT(CASE WHEN pkt_amt IN (520,200) THEN 1 END) >=5 |
| 2025-08-28 | 输出特定日期上市的银行  |
select * from stock_info where list_date between '2006-01-01' and '2006-09-01' and industry = '银行' |
| 2025-08-28 | 输出特定日期上市的银行  |
select * from stock_info where list_date between '2006-01-01' and '2006-09-01' |
| 2025-08-28 | A和K之间的手牌(3)  |
select * from hand_permutations where card1 between 'A' and 'K' and card2 between 'A' and 'K' order by id |
| 2025-08-28 | A和K之间的手牌(2)  |
select * from hand_permutations where card1 between 'A' and 'K' or card2 between 'A' and 'K' |
| 2025-08-28 | A和K之间的手牌(1)  |
select * from hand_permutations where card1 between 'A' and 'K' order by id |
| 2025-08-28 | A和K之间的手牌(1)  |
select * from hand_permutations where card1 between 'J' and 'K' order by id |
| 2025-08-28 | A和K之间的手牌(1)  |
select * from hand_permutations where card1 between 'J' and 'K' |
| 2025-08-28 | A和K之间的手牌(1)  |
select * from hand_permutations where card1 between 'j' and 'k' |
| 2025-08-28 | 交易金额在5000至10000(含边界)的所有交易  |
select * from cmb_usr_trx_rcd where trx_amt between 5000 and 10000 order by trx_amt desc limit 5; |
| 2025-08-28 | 交易金额大于10000元的所有交易  |
select * from cmb_usr_trx_rcd where trx_amt > 100000 order by trx_amt desc |
| 2025-08-28 | 大于J小于K的手牌  |
select * from hand_permutations where (card1 > 'j' and card1 < 'k') and (card2 > 'j' and card2 < 'k') |