标签：catalog 情况下 walk val record ice code 查询条件 pre
ServiceNow开发中我们在写代码查询request_item表时，经常会遇到想要根据variable的值来作为查询条件。但是官方文档有强调：You cannot directly query the variables of the Service Catalog Request Item table [screqitem]. Instead, query the Variable Ownership table, [scitemoptionmtom], by adding two queries, one for the variable name and another for the value. The query returns the many-to-many relationship, which you can dot-walk to the requested item.
Wrong example:
var gr = new GlideRecord(‘sc_req_item‘);
gr.addQuery(‘variables.variable_iem‘,item_value);
......Right example:
var request_item_id;
var gr = new GlideRecord(‘sc_item_option_mtom‘);
gr.addQuery(‘sc_item_option.item_option_new.name‘,‘item_name‘);
gr.addQuery(‘sc_item_option.value‘,‘item_value‘);
gr.query();
while(gr.next()) {
request_item_id = gr.request_item.sys_id+‘‘;
}总结：
1 Variables.variable_name不能作为record 查询条件。
2 在确定record的情况下，可以使用gr.variables.variable_name。
Querying Service Catalog Tables
标签：catalog 情况下 walk val record ice code 查询条件 pre
原文地址：https://blog.51cto.com/13716461/2485498
