oracle保留小数点后两位的函数
在日常开发中经常用到百分比做数据对比，但是有可能得到的数据是一个多位小数，结果如下所示：
如果想截取部分小数如保留小数点后两位可以怎么做呢？
在Oracle中，可以使用ROUND函数来四舍五入保留小数点后两位，或者使用TRUNC函数来截断小数点后多余的位数。
例子：
使用ROUND函数：
SELECT ROUND(123.4567, 2) FROM DUAL;
-- 结果: 123.46
使用TRUNC函数：
SELECT TRUNC(123.4567, 2) FROM DUAL;
-- 结果: 123.45
在这里，DUAL是Oracle提供的一个虚拟表，可以用来进行这种单行选择操作。ROUND函数进行四舍五入，而TRUNC函数则直接截断多余的小数位数。两者的区别在于如何处理.5的情况，ROUND会四舍五入到最接近的偶数，而TRUNC则简单地截断。
【注意】截取的先后顺序也有讲究，如果是百分比需要*100，建议先*100再截取，否则结果精确度会受影响
(select distinct ROUND((select sum(CONSUMED)from JA_PROJECT_MANAGER_OF_GROUP_TASK_Vwhere PRODUCTID = C.PRODUCTIDand TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW'))/ (select sum(CONSUMED)from JA_PROJECT_MANAGER_OF_GROUP_TASK_Vwhere TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW'))* 100,2)from JA_PROJECT_MANAGER_OF_GROUP_TASK_V)AS ACTUAL_RATE_DEVELOPMENT--“开发投入实际占比”：当前统计周期内当前专项上投入的开发资源工时/当前统计周期内所有开发资源工时 * 100%from JAS_PROJECT_MASTER Mleft join JA_PROJECt_MAPPING B on B.PROJECT_ID = M.PROJECT_IDleft join JA_PROJECT_MANAGER_OF_GROUP_TASK_V C on C.PRODUCTID = B.PRODUCT_ID实际取值:8.26%
错误示范：
取值：8%
【不想拼接为空的数】
现状：当查询到的内容为空依然会拼接%，但是很突兀
原代码：直接拼接，并未判断，为空也展示%
改进：判断是否为空，若为空则赋值0
改进后效果：
【本周计划完成度与状态关联，当本周计划完成度小于100状态显示为异常（1），反之则正常（0）】
之前的做法是在两个项（本周计划完成度，状态）都设置动态操作，在里面设置对应的动态操作，设置值-JavaScript表达式-
if (utils.checkNull($v('P203_WEEK_PERCENTAGE')) ) {
return 0;
} else{
if (($v('P203_WEEK_PERCENTAGE')) >= 100) {
return 0;
}else{
return 1;
}
}
最后设置-刷新
受影响的元素-项-状态
但是这样太麻烦不说，js返回的0和1在项-本周计划完成度 中没有意义
于是有了
方案二
直接对本周计划完成度做判断然后给状态赋值
JavaScript表达式-
if (($v('P203_WEEK_PERCENTAGE')) >= 100) {
$s('P203_STATUS',0);
}else{
$s('P203_STATUS',1);
}
效果：
完成度100为正常
完成度小于100为异常
【在APEX页面实现鼠标指到悬浮展示数据】
APEX也可以实现
属性-高级-初始化JavaS函数-
function(config) {config.defaultGridViewOptions = {tooltip: {// when the tooltip is integrated with the grid view the content callback// gets some extra helpful parameterscontent: function(callback, model, recordMeta, colMeta, columnDef ) {var text = null;// if in/over the row header display a tooltip based on // the record edit state metadataif (recordMeta && $(this).hasClass( "a-GV-rowHeader" ) ) {if ( recordMeta.deleted ) {text = "This record has been deleted";} else if ( recordMeta.inserted ) {text = "This record has been added";} else if ( recordMeta.updated ) {text = "This record has been changed";}} else {if ( columnDef && recordMeta) {// if in/over the DEFAULT_VALUE column put the DEFAULT_VALUE in a tooltip so more of the DEFAULT_VALUE can be seen// if in/over the name column show the hire dateif ( columnDef.property === "ACTUAL_RATE_DEVELOPMENT" ) {text = model.getValue( recordMeta.record, "DETAILS" );}}// if in/over any other column display a tooltip based on // the changed state metadataif ( colMeta && colMeta.changed ) {if ( text !== null) {text += "<br>";} else {text = "";}text += "This cell has been changed";}}return text;}}};return config;
}【汉字拼接多个查询值输出为一个值】
1.0版本
SELECT LISTAGG(label, ',') WITHIN GROUP (ORDER BY label) AS labels
FROM (SELECT '该项目本周总开发工时：' || sum(CONSUMED) AS labelFROM JAS_PROJECT_MASTER Mleft join JA_PROJECt_MAPPING B on B.PROJECT_ID = M.PROJECT_IDleft join JA_PROJECT_MANAGER_OF_GROUP_TASK_V C on C.PRODUCTID = B.PRODUCT_IDwhere TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')and M.PROJECT_ID = :P205_PROJECT_IDUNION ALLSELECT '晶品研发组本周开发工时(小时)：' || nvl((select sum(CONSUMED)from JA_PROJECT_MANAGER_OF_GROUP_TASK_Vwhere PRODUCTID = C.PRODUCTIDand code = 'kaifa-2024'and TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')),0)FROM JAS_PROJECT_MASTER Mleft join JA_PROJECt_MAPPING B on B.PROJECT_ID = M.PROJECT_IDleft join JA_PROJECT_MANAGER_OF_GROUP_TASK_V C on C.PRODUCTID = B.PRODUCT_IDwhere TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')and M.PROJECT_ID = :P205_PROJECT_IDUNION ALLSELECT '晶品支撑组本周开发工时(小时)：' || nvl((select sum(CONSUMED)from JA_PROJECT_MANAGER_OF_GROUP_TASK_Vwhere PRODUCTID = C.PRODUCTIDand code = 'LCODEDEV-2024'and TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')),0)FROM JAS_PROJECT_MASTER Mleft join JA_PROJECt_MAPPING B on B.PROJECT_ID = M.PROJECT_IDleft join JA_PROJECT_MANAGER_OF_GROUP_TASK_V C on C.PRODUCTID = B.PRODUCT_IDwhere TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')and M.PROJECT_ID = :P205_PROJECT_ID)
;输出
都在同一行，页面不美观
改进2.0版本：在分结果之后面拼接|| CHR(10)
SELECT LISTAGG(label, ',') WITHIN GROUP (ORDER BY label) AS labels
FROM (SELECT '该项目本周总开发工时：' || sum(CONSUMED) AS labelFROM JAS_PROJECT_MASTER Mleft join JA_PROJECt_MAPPING B on B.PROJECT_ID = M.PROJECT_IDleft join JA_PROJECT_MANAGER_OF_GROUP_TASK_V C on C.PRODUCTID = B.PRODUCT_IDwhere TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')and M.PROJECT_ID = :P205_PROJECT_IDUNION ALLSELECT '晶品研发组本周开发工时(小时)：' || nvl((select sum(CONSUMED)from JA_PROJECT_MANAGER_OF_GROUP_TASK_Vwhere PRODUCTID = C.PRODUCTIDand code = 'kaifa-2024'and TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')),0) || CHR(10)FROM JAS_PROJECT_MASTER Mleft join JA_PROJECt_MAPPING B on B.PROJECT_ID = M.PROJECT_IDleft join JA_PROJECT_MANAGER_OF_GROUP_TASK_V C on C.PRODUCTID = B.PRODUCT_IDwhere TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')and M.PROJECT_ID = :P205_PROJECT_IDUNION ALLSELECT '晶品支撑组本周开发工时(小时)：' || nvl((select sum(CONSUMED)from JA_PROJECT_MANAGER_OF_GROUP_TASK_Vwhere PRODUCTID = C.PRODUCTIDand code = 'LCODEDEV-2024'and TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')),0) || CHR(10)FROM JAS_PROJECT_MASTER Mleft join JA_PROJECt_MAPPING B on B.PROJECT_ID = M.PROJECT_IDleft join JA_PROJECT_MANAGER_OF_GROUP_TASK_V C on C.PRODUCTID = B.PRODUCT_IDwhere TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')and M.PROJECT_ID = :P205_PROJECT_ID)
;在数据库层面实现了换行，但是在Oracle APEX页面还是紧密排序的，看来无法使用。
改进3.0版本：拼接|| '<br/>'，在APEX页面层面实现拼接换行
SELECT LISTAGG(label, ',') WITHIN GROUP (ORDER BY label) AS labels
FROM (SELECT '该项目本周总开发工时：' || sum(CONSUMED) AS labelFROM JAS_PROJECT_MASTER Mleft join JA_PROJECt_MAPPING B on B.PROJECT_ID = M.PROJECT_IDleft join JA_PROJECT_MANAGER_OF_GROUP_TASK_V C on C.PRODUCTID = B.PRODUCT_IDwhere TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')and M.PROJECT_ID = :P205_PROJECT_IDUNION ALLSELECT '晶品研发组本周开发工时(小时)：' || nvl((select sum(CONSUMED)from JA_PROJECT_MANAGER_OF_GROUP_TASK_Vwhere PRODUCTID = C.PRODUCTIDand code = 'kaifa-2024'and TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')),0)|| '<br/>'FROM JAS_PROJECT_MASTER Mleft join JA_PROJECt_MAPPING B on B.PROJECT_ID = M.PROJECT_IDleft join JA_PROJECT_MANAGER_OF_GROUP_TASK_V C on C.PRODUCTID = B.PRODUCT_IDwhere TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')and M.PROJECT_ID = :P205_PROJECT_IDUNION ALLSELECT '晶品支撑组本周开发工时(小时)：' || nvl((select sum(CONSUMED)from JA_PROJECT_MANAGER_OF_GROUP_TASK_Vwhere PRODUCTID = C.PRODUCTIDand code = 'LCODEDEV-2024'and TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')),0)|| '<br/>'FROM JAS_PROJECT_MASTER Mleft join JA_PROJECt_MAPPING B on B.PROJECT_ID = M.PROJECT_IDleft join JA_PROJECT_MANAGER_OF_GROUP_TASK_V C on C.PRODUCTID = B.PRODUCT_IDwhere TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')and M.PROJECT_ID = :P205_PROJECT_ID)改进4.0版本：想优先展示总开发工时，再展示各组
去掉分组和排序条件，按照想要的顺序查询数据并拼接即可
select *
from (select d.project_detail_id project_detail_id,m.project_id project_id,m.project_name project_name,m.project_class project_class,--工作类型 专项，事务，推广/内部专项、外部专项m.important_grade important_grade, --重要等级（仅内部人员可见）m.project_status project_status,--当前阶段m.project_scope project_scope,--项目范围m.leading_unit leading_unit,--需求单位(CASEWHEN plan_to_end_date IS NULL THEN NULLwhen SYSDATE > plan_to_end_date then '100%'ELSEFLOOR((SYSDATE - start_date) / (plan_to_end_date - start_date) * 100) || '%'END) AS progress, --项目进度（%）(SELECT next_planFROM (SELECT f.project_id project_id,f.next_plan next_plan,ROW_NUMBER() OVER (PARTITION BY t.project_id ORDER BY f.CREATE_DATE DESC NULLS LAST) AS rnFROM JAS_PROJECT_MASTER tJOINJAS_PROJECT_DETAIL f ON t.project_id = f.project_id and to_char(t.start_date, 'yyyy') = '2024')WHERE rn = 2and project_id = m.project_id) plan,--上周的“下周计划”即——本周计划d.current_progress as current_progress_week, --本周工作总结(casewhen d.WEEK_PERCENTAGE is null then ''else d.WEEK_PERCENTAGE || '%' end) as WEEK_PERCENTAGE, --本周计划内工作完成度（%）(casewhen d.ACTUAL_RATE_WEEK is null then ''else d.ACTUAL_RATE_WEEK || '%' end) ACTUAL_RATE_WEEK, --本周实际工作完成度（%）d.next_plan next_plan, --下周工作计划m.project_owner project_owner, --项目负责人m.project_target project_target,--项目目标m.progress_memo progress_memo,--进度说明m.start_date start_date,--开始时间m.plan_to_end_date plan_to_end_date,--计划完成时间m.actual_end_date actual_end_date,--实际完成时间m.REQUEST_CONTACT_POINT, --需求方对接人（必填）m.HQIT_TEAM,--总部IT对接组m.HQIT_TEAM_CP,--总部IT对接人m.VENDOR,--厂商m.VENDOR_CP,--厂商对接人m.WEIGHT_COEFFICIENT WEIGHT_COEFFICIENT, --权重系数d.NEXT_PLAN_ORG,--下周工作责任方/对接方d.NEXT_PLAN_OWNER,--下周工作责任人/对接人(case when d.STATUS = 0 or d.STATUS is null then 0 else 1 end) as STATUS,d.project_comment project_comment,--异常说明d.update_date update_date,(casewhen m.WEIGHT_COEFFICIENT = 0 then ''else NVL(ROUND((select m.WEIGHT_COEFFICIENT /sum(WEIGHT_COEFFICIENT) * 100from JAS_PROJECT_MASTER Dwhere PROJECT_CLASS = '内部专项'group by PROJECT_CLASS),2), 0) || '%' end)AS REASONABLE_RATE_DEVELOPMENT,--“开发投入合理占比”：当前内部专项权重系数 / 所有内部专项的权重之和 * 100%(select distinct NVL(ROUND((select sum(CONSUMED)from JA_PROJECT_MANAGER_OF_GROUP_TASK_V2where PRODUCTID = B.PRODUCT_IDand TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW'))/ (select sum(CONSUMED)from JA_PROJECT_MANAGER_OF_GROUP_TASK_V2where TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')) *100, 2), 0)from JA_PROJECT_MANAGER_OF_GROUP_TASK_V2) || '%'AS ACTUAL_RATE_DEVELOPMENT,--“开发投入实际占比”：当前统计周期内当前专项上投入的开发资源工时/当前统计周期内所有开发资源工时 * 100%
(SELECT LISTAGG(label, '') AS labels
FROM (SELECT distinct '该项目本周总开发工时：' || sum(CONSUMED) || '<br/>' AS labelFROM JAS_PROJECT_MASTER M2left join JA_PROJECt_MAPPING B on B.PROJECT_ID = M2.PROJECT_IDleft join JA_PROJECT_MANAGER_OF_GROUP_TASK_V2 C on C.PRODUCTID = B.PRODUCT_IDwhere TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')and M.PROJECT_ID = M2.PROJECT_IDUNION ALLSELECT distinct '晶品研发组本周开发工时(小时)：' || nvl((select sum(CONSUMED)from JA_PROJECT_MANAGER_OF_GROUP_TASK_V2where PRODUCTID = C.PRODUCTIDand code = 'kaifa-2024'and TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')),0) || '<br/>'FROM JAS_PROJECT_MASTER M0left join JA_PROJECt_MAPPING B on B.PROJECT_ID = M0.PROJECT_IDleft join JA_PROJECT_MANAGER_OF_GROUP_TASK_V2 C on C.PRODUCTID = B.PRODUCT_IDwhere TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')and M.PROJECT_ID = M0.PROJECT_IDUNION ALLSELECT distinct '晶品支撑组本周开发工时(小时)：' || nvl((select sum(CONSUMED)from JA_PROJECT_MANAGER_OF_GROUP_TASK_V2where PRODUCTID = C.PRODUCTIDand code = 'LCODEDEV-2024'and TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')),0) || '<br/>'FROM JAS_PROJECT_MASTER M1left join JA_PROJECt_MAPPING B on B.PROJECT_ID = M1.PROJECT_IDleft join JA_PROJECT_MANAGER_OF_GROUP_TASK_V2 C on C.PRODUCTID = B.PRODUCT_IDwhere TO_CHAR(WORK_DATE, 'YYYYIW') = TO_CHAR(TRUNC(SYSDATE), 'YYYYIW')and M.PROJECT_ID = M1.PROJECT_ID) ) DETAILSfrom JAS_PROJECT_MASTER Mleft join JA_PROJECt_MAPPING B on B.PROJECT_ID = M.PROJECT_ID
-- left join JA_PROJECT_MANAGER_OF_GROUP_TASK_V2 C on C.PRODUCTID = B.PRODUCT_IDleft join (select *from (select rank() over (partition by e.project_id order by e.CREATE_DATE desc NULLS LAST ) rn,e.project_detail_id,e.project_id,e.update_date,e.updator,e.project_comment,e.STATUS,e.NEXT_PLAN_ORG,e.NEXT_PLAN_OWNER,e.WEEK_PERCENTAGE,e.next_plan,e.current_progress,e.CREATE_BY,e.CREATE_DATE,e.ACTUAL_RATE_WEEKfrom JAS_PROJECT_DETAIL e)where rn = 1) don m.project_id = d.project_idleft join JA_PROJECt_MAPPING P on P.PROJECT_ID = M.PROJECT_IDwhere start_date >= to_date('2024-01-01', 'yyyy-mm-dd')and start_date <= to_date('2024-12-31', 'yyyy-mm-dd')and m.PROJECT_OWNER is not nulland m.DEL_FLAG is nulland (m.important_grade = :P205_IMPORTANT_GRADE or :P205_IMPORTANT_GRADE is null)and (m.project_class = :P205_CLASSIFY or :P205_CLASSIFY is null)and (m.project_status = :P205_PROJECT_STATUS or :P205_PROJECT_STATUS is null)order by M.IMPORTANT_GRADE);
