ABAP透明表里的时间戳,数据类型为dec:
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举个例子:如果时间戳是20180918173132,丢弃173132,只保留20180918, 然后再计算天数间隔。
直接用CDS view的字符串操作函数substring是不行的,因为时间戳类型dec和substring期待的字符串类型不匹配。
解决方案:
先将时间戳字段类型从dec强制转换成abap.dats:
@AbapCatalog.sqlViewName: 'zproday' @AbapCatalog.compiler.compareFilter: true @AccessControl.authorizationCheck: #CHECK@EndUserText.label: 'Day between'define view zdate_day_between as select from comm_product {key comm_product.product_id as prod_id, comm_product.product_guid as prod_guid, comm_product.valid_from as valid_from, comm_product.valid_to as valid_to,cast(substring(cast(valid_from as abap.char(32)),1,8) as abap.dats) as from_date,cast(substring(cast(valid_to as abap.char(32)),1,8) as abap.dats) as to_date}
然后再用CDS view标准的时间处理函数DATS_DAYS_BETWEEN:
@AbapCatalog.sqlViewName: 'zdbetw' @AbapCatalog.compiler.compareFilter: true @AccessControl.authorizationCheck: #CHECK@EndUserText.label: 'Day between'define view zc_date_day_between as select from zdate_day_between as host{key host.prod_guid, host.prod_id, host.from_date, host.to_date, DATS_DAYS_BETWEEN(host.from_date, host.to_date) as no_of_days }
测试结果:
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