獲取所有表、字段、索引等詳細信息

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"