select * from bb ${if(len(cc) == 0,"","where bb.物料名称 in ('" + cc + "')")} 代码执行没问题，但下拉框复选多个就没数据咋回事
应该是没设置分隔符，换个写法
select * from bb ${if(len(cc) == 0,"","where bb.物料名称 in ('" + replace(cc,",","','") + "')")}
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