通过本文主要向大家介绍了db2修改字段类型,db2修改字段长度,db2增加字段,db2 删除字段,db2修改表字段长度等相关知识,希望本文的分享对您有所帮助
获取所有表、字段、索引等详细信息
SELECT d.name tbName, COALESCE(d.remarks, '') tbDesc, a.name columnName, a.coltype columnType , decode(a.nulls,'Y','1','0') notNull, decode(a.identity,'Y','1','0') auto, a.longlength width, a.scale precision, COALESCE(a.remarks, '') comment, decode(n.unique_colcount,'1','1','0') unique, decode(n.uniquerule,'P','1','0') masterKey, COALESCE(n.name, '') indexName FROM sysibm.syscolumns a INNER JOIN sysibm.systables d on a.tbname=d.name LEFT JOIN sysibm.sysindexes n on n.tbname=d.name and SUBSTR(colnames,2)=a.name where d.type='T'and d.tbspace='USERSPACE1'</div> </div>