获取一个表的所有字段信息

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select b.name as tablename,a.name as columnname,c.name as columntype,c.max_length as columnmaxlen from sys.columns a,sys.tables b,sys.types c where a.object_id=b.object_id and b.name='fieldConfig' and a.system_type_id=c.system_type_id and c.name<>'sysname'

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