如何在 SOQL 中將日期照著年份或月份分組 How to group by year or month in SOQL?
範例 SELECT count(id), CALENDAR_YEAR(createddate ) FROM Opportunity group by CALENDAR_YEAR(createddate ) 其它你可能不知道但很好用的 SOQL 函數 Count_Distinct() HOUR_IN_DAY() GROUPING() <---用來算 subtotal 的 參考資料 Aggregate Functions https://developer.salesforce.com/docs/atlas.en-us.soql_sosl.meta/soql_sosl/sforce_api_calls_soql_select_agg_functions.htm Date Functions https://developer.salesforce.com/docs/atlas.en-us.soql_sosl.meta/soql_sosl/sforce_api_calls_soql_select_date_functions.htm