Apex SOQL 查询中的变量引用

要在查询中引用变量，请在变量名称前添加冒号（:)。

Datetime targetDate = Datetime.now().addDays(-7);
List<Lead> recentLeads = [SELECT Id FROM Lead WHERE CreatedDate > :targetDate];

string targetName = 'Unknown';
List<Contact> incompleteContacts = [SELECT Id FROM Contact WHERE FirstName = :targetName];