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oracle中使用on delete cascade和on delete set null来建立外键 其面我们介绍了创建外键约束时如果使用oracle默认的创建方式,在删除被参照的数据时,将无法被删除,这一点在oracle9i中给了我们更多灵活的选择,我们可是使用on delete cascade ...
select a.constraint_name, a.table_name, b.constraint_name from user_constraints a, user_constraints b where a.constraint_type = 'R' and b.constraint_type = 'P' and a.r_constraint_name = b.constraint_name P 代表主键 R 代表外键
原来是SQL语句中加了双引号的原因,将值改为单引号就行了!看来对于SQL中,单引号与双引号的区别还得好好复习一下了!另外一个可能的原因是,将数据库表的列名写错了!
select t.examinee_id, t.batch_id, t.signcompany, t.signcompany_code, t.signposition, t.signposition_code, (select count(*) from ti_examinee_info b where t.examinee_id=b.examinee_id) as examsum from ti_examinee_info t
有个变通的做法 Loop ... if(true) then goto nextloop; end if; ... <<next_loop>> null; end loop;
我们在写SQL的时候经常会用到别的表的数据,都要通过关联来取,但如果关联表多的话,会SQL变的难于读懂: create or replace function f_sys_get_state(in_table_name VARCHAR2, --TS_STATE中配置的表名 in_col_name VARCHAR2, --TS_STATE中配置的字段名 in_state_value char) --TS_STAT ...
方法一. select a.idcard, SUM( CASE WHEN a.subject_code=2 THEN a.SCOPE ELSE 0 END ) , SUM( CASE WHEN a.subject_code=3 THEN a.SCOPE ELSE 0 END ) , SUM( CASE WHEN a.subject_code=4 THEN a.SCOPE ELSE 0 END ) , SUM( CASE WHEN a.subject_code=5 THEN a.SCOPE ELSE 0 END ) from cm_studen ...
运行该函数后就可以直接在SQL中使用 CREATE OR REPLACE TYPE ty_str_array IS TABLE OF VARCHAR2 (4000); CREATE OR REPLACE FUNCTION fn_split (p_str IN VARCHAR2, p_delimiter IN VARCHAR2) RETURN ty_str_split IS j INT := 0; i INT := 1; len INT := 0; len1 INT := 0; str VARCHAR2 (4000); ...
直接下载下面SQL文件运行即可: 运行顺序:vip_province.sql  -> vip_city.sql -> grp_area.sql

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将下面代码直接复制到相应的位置就可看效果 var comboxWithTree = new Ext.form.ComboBox({ fieldLabel:"使用科室", hiddenName:'entity.cuseDept', store:new Ext.data.SimpleStore({fields:[],data:[[]]}), editable:false, mode: 'local', tr ...
在CSS代码中加入   .x-grid-record-red table{ color: #FF0000; } 在GridPanel中加入 viewConfig : { autoFill : true, getRowClass : function(record,rowIndex,rowParams,store){ //禁用数据显示红色 if(record.get('tradeId')==null || record.get('tradeId') == ''){ return 'x- ...
select a.* from (select SCORE_ID,EX_EB_ID,EB_NAME,ss.ADMISSION_TICKET,SCOPE,EXAM_TIME,UPDATE_TIME, ei.examinee_id,ei.examinee_name, ei.register_dept,ei.dept_code,ei.register_station, ei.station_code, row_number() OVER(partition by dept_code, ei.station_code ORDER BY ss.scope desc) a_rownum from TM_ST ...
select i.sid,i.sname,i.birthday,i.schooltime,i.sphone,c.classname,a.assnname,sum(decode(subject,'语文',s.score,0)) as chin, sum(decode(subject,'数学',s.score,0)) as math, sum(decode(subject,'英语',s.score,0)) as eng from student_info i left join student_expand e on i.sid = e.sid left join student_class c ...
select a.constraint_name, a.table_name, b.constraint_name from user_constraints a, user_constraints b where a.constraint_type = 'R' and b.constraint_type = 'P' and a.r_constraint_name = b.constraint_name P 代表主键 R 代表外键
//删除用户drop user civilinterview cascade; //创建用户并指定表空间 create user username identified by password default tablespace test_data temporary tablespace test_temp; //给用户授予权限 grant connect,resource to username;
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