我正在尝试查找字符串的子字符串作为ADF中活动的一部分。举例来说,我想从字符串'de'
中提取出'abcde'
。我试过了:
@substring(variables('target_folder_name'), 3, (int(variables('target_folder_name_length'))-3))
其中int(variables('target_folder_name_length'))
的值为5,variables('target_folder_name')
的值为'abcde'
但是它给了我:Unrecognized expression: (int(variables('target_folder_name_length'))-3)
另一方面,如果我尝试这样做:@substring(variables('target_folder_name'), 2, int(variables('target_folder_name_length'))-3)
这给了我:'int' is a primitive and doesn't support nested properties
我要去哪里错了?