-- 查询某表的数据字典
SELECT A.TABLE_NAME AS "表名",A.COLUMN_NAME AS "字段名",
DECODE(A.CHAR_LENGTH,0,DECODE(A.DATA_SCALE,NULL,A.DATA_TYPE,A.DATA_TYPE||'('||A.DATA_PRECISION||','||A.DATA_SCALE||')'),
A.DATA_TYPE||'('||A.CHAR_LENGTH||')') as "字段类型1",A.DATA_TYPE AS "字段类型",A.DATA_PRECISION AS "有效位",A.DATA_SCALE AS "精度值",
A.CHAR_LENGTH AS "字段长度",A.NULLABLE AS "能否为空"
from sys.user_tab_columns A where A.table_name = 'TAM_ADDRESS'
-- 具有dba权限用户导出数据字典
SELECT A.TABLE_NAME AS "表名",A.COLUMN_NAME AS "字段名",
DECODE(A.CHAR_LENGTH,0,DECODE(A.DATA_SCALE,NULL,A.DATA_TYPE,A.DATA_TYPE||'('||A.DATA_PRECISION||','||A.DATA_SCALE||')'),
A.DATA_TYPE||'('||A.CHAR_LENGTH||')') as "字段类型",A.DATA_DEFAULT AS "默认值",
A.NULLABLE AS "能否为空",B.comments AS "备注"
from sys.all_tab_columns A,sys.DBA_COL_COMMENTS B
WHERE A.owner=B.owner AND A.table_name=B.table_name AND A.COLUMN_NAME=B.COLUMN_NAME AND A.owner='guoqiang' AND
A.TABLE_NAME IN (
'TB_SUBJECT', 'TB_SUBJECT_BALANCE', 'TB_VOUCHER', 'TB_VOUCHER_DETAILS',
'TB_CUSTOMER', 'TB_VOUCHER_CLASSIFY_MODE', 'TB_VOUCHER_TYPE', 'TB_ASSET',
'TB_ASSET_CATALOG', 'TB_M_DM_ASSETS_LIABI_RPT', 'TB_M_DM_PROFIT_RPT',
'TB_M_DM_REVENUE_RPT', 'TB_M_DM_COST_RPT'
)
ORDER BY A.TABLE_NAME
--一般用户导出该用户下的数据字典
SELECT A.TABLE_NAME AS "表名",A.COLUMN_NAME AS "字段名",
DECODE(A.CHAR_LENGTH,0,DECODE(A.DATA_SCALE,NULL,A.DATA_TYPE,A.DATA_TYPE||'('||A.DATA_PRECISION||','||A.DATA_SCALE||')'),
A.DATA_TYPE||'('||A.CHAR_LENGTH||')') as "字段类型",A.DATA_DEFAULT AS "默认值",
A.NULLABLE AS "能否为空",B.comments AS "备注"
from sys.user_tab_columns A,sys.user_col_comments B
WHERE A.table_name=B.table_name AND A.COLUMN_NAME=B.COLUMN_NAME AND
A.TABLE_NAME IN (
'TB_SUBJECT', 'TB_SUBJECT_BALANCE', 'TB_VOUCHER', 'TB_VOUCHER_DETAILS',
'TB_CUSTOMER', 'TB_VOUCHER_CLASSIFY_MODE', 'TB_VOUCHER_TYPE', 'T
虽然学习Java很久了，自己也连接过一些数据库，比如mysql之类的，如今呢，也学习了一段时间的Oracle，然而呢，今天是我第一次连接Oracle，嘿嘿，应该还不算太迟吧。
今天呢，有点笨拙，大家莫笑！
我这是一个查询例子
首先，� ......
