ORACLE SQL CAST IN CASE语句
有没有办法在CASE语句中强制转换为整数ORACLE SQL CAST IN CASE语句,sql,oracle,casting,integer,case,Sql,Oracle,Casting,Integer,Case,有没有办法在CASE语句中强制转换为整数 CASE WHEN SV.END_DATE IS NOT NULL THEN SV.END_DATE - SV.START_DATE ELSE 0 END AS DAYDIFF 是的,您可以将值转换为无小数部分的数字数据类型: CASE WHEN SV.END_DATE IS NOT NULL THEN CAST(SV.END_DATE - SV.START_DATE AS NUMBER(38)) ELSE 0 END AS DA
CASE
WHEN SV.END_DATE IS NOT NULL THEN SV.END_DATE - SV.START_DATE
ELSE 0
END AS DAYDIFF
是的,您可以将值转换为无小数部分的数字数据类型:
CASE
WHEN SV.END_DATE IS NOT NULL THEN
CAST(SV.END_DATE - SV.START_DATE AS NUMBER(38))
ELSE 0
END AS DAYDIFF
或者您也可以,这也会去除值的小数部分:
CASE
WHEN SV.END_DATE IS NOT NULL THEN
TRUNC(SV.END_DATE - SV.START_DATE)
ELSE 0
END AS DAYDIFF
您想做什么-取整或截断
结束日期
和开始日期
之间的差异?获取他们之间的完整天数?还是别的什么?样本数据和预期结果也可能让事情变得更清楚。非常感谢您,感谢您的支持。