mysql

SQL 常用函数集合

--join函数具体的使用方法，对应的数据表，必须在同一个数据库中
SELECT vt.called_no,cr.check_total_label_list,cr.check_label_list,vt.voice_id,cr.partition_dt
FROM ailab_vqc.check_result_201908 as  cr 
JOIN  ailab_vqc.voice_tab_201908  as vt ON cr.voice_id=vt.voice_id
WHERE cr.check_status=0  AND vt.biz_model_type=4 and  cr.partition_dt="2019-08-30" 


--count(*)通计数据
SELECT count(*)
FROM ailab_vqc.check_result_201908 as  cr 
JOIN  ailab_vqc.voice_tab_201908  as vt ON cr.voice_id=vt.voice_id
WHERE   vt.biz_model_type= 4  and cr.partition_dt="2019-08-26" 

--where子式的写法
SELECT vt.called_no,cr.ai_total_label_list,cr.request_id,cr.ai_label_list,cr.partition_dt
FROM ailab_vqc.check_result_201908 as  cr 
JOIN  ailab_vqc.voice_tab_201908  as vt ON cr.voice_id=vt.voice_id
WHERE vt.bsp_org_id in ('20150708121351745f91d3',
'20150708130651747bc096',
'2015070813072616d94b3b',
'201507081307534748251d'
)   and vt.call_time_length > 60 AND  cr.partition_dt="2019-08-27" 

--between 子式的写法
select result.request_id, sample.editor_sentence_label_list,result.ai_sentence_label_list,sample.editor_asr_fix
from ailab_vqc.check_result_sample sample
join ailab_vqc.check_result_201909 result on sample.request_id = result.request_id 
and sample.paritition_dt='20190902' and result.partition_dt="20190902" and result.check_status=0 and sample_time BETWEEN "2019-09-05 08:00:00.0" and "2019-09-05 18:00:00.0"
  
---各种嵌套，输出在20190322日，被叫的号码中，截止到20190626，输出成单的号码和对应成单的日期；数据表限制数据在20000以内
select call_no_table.rt_called_no, oi.earliest_order_date
from (select rt_called_no from defaultdb.realtime_call_detail where partition_dt = "20190322" and rt_call_time_length > 0 
and rt_call_type = "dialout" and rt_product_line in (55,56) group by rt_called_no LIMIT 200000) call_no_table 
join guessulike.ai_voice oi on call_no_table.rt_called_no = oi.phone
where oi.partition_dt = "20190626" and oi.earliest_order_date > "2019-03-22"

---group by的用法，这个相当于去重
select rt_called_no from defaultdb.realtime_call_detail where partition_dt = "20190322"  group by rt_called_no

---group by的用法，查找某个部门有多少人
select dept,count(*) as 人数 from emp. group by dept;

---选取name中含有k的记录
SELECT * FROM table_  WHERE name LIKE '%k%';