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create or replace trigger dcs_batch_id_tri before insert into on dcs_collect_batch for each row when (new.dcs_id is null) begin select dcs_collect_bat 阅读全文
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falshback table dcs_collect_bash to timestamp to_timestamp('2020-11-06 18:00:00', 'yyyy-mm-dd hh24:mi:ss') alter table dcs_collect_batch enable row mo 阅读全文
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select * from (select a.* row_number() over(partition by a.task_type,to_char(a.oper_time,'yyyymmdd') order by a.oper_time desc) rank from test a ) t w 阅读全文
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with t1 as(select d.p-d.dlrt cha,d.* from (select c.*, rank() over(partition by c.cos_id order by c.dlrq desc) as rank2 from (select b.cos_id, b.dlrq, 阅读全文
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select date '2020-11-17' from dual; -- 2020/11/17 阅读全文
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SELECT SYSDATE ,TRUNC(SYSDATE),TRUNC(SYSDATE -1),SYSDATE-1/24 FROM DUAL;2020/11/17 10:58:06 2020/11/17 2020/11/16 2020/11/17 9:58:06 阅读全文
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1.instr('源字符串','目标字符串’，'开始位置','第几次出现')函数select instr('BRD_SOI_standard-202011120.xml','-') from dual;--172、TO_DATA(substr('BRD_SOI_standard-202011120. 阅读全文