树欲静而风不止

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select max(str) strfrom ( select ncol, wm_concat(PT_NAME) over ( partition by ncol order by lv) str from ( select 1 ncol, t.PT_NAME, o.lv from table_VB_T t, (select abc, lv .

select regexp_substr('85,125,2,15,66', '[^,]+', 1, level) abc, level lvfrom dualconnect by regexp_substr('85,125,2,15,66', '[^,]+', 1, LEVEL) is not null;

1、建表语句create table table_name( tk_id VARCHAR2(32) not null PRIMARY KEY, CREATE_REN_ID VARCHAR2(32), CREATE_TIME DATE, UPDATE_REN_ID VARCHAR2(32), UPDATE_TIME DATE);2、添加注释comment on table ta.

类似有一个字段 service_item ，里面存放的内容大致如下{"categoryId":"01","category":"其他","name":"费用","code":"01","desc":"实报实销","value":"250.00"}我想要根据这个字段内的字符串中的 id 和 code 进行匹配，然后取值 value1、获取idselect substr(service_item, instr(service_item,'"categoryId":"')+14, 2) c

由于Oracle授权问题，Maven不提供Oracle JDBC driver，为了在Maven项目中应用Oracle JDBC driver,必须手动添加到本地仓库。不需要下载Oracle，方法如下：首先你需要去oracle官网注册账号：https://login.oracle.com/oaam_server/login.do一、修改pom.xml文件，添加驱动依赖<depe...