查询Oracle 表字段

得过且过

　　Select ROWNUM, T.*
　　From (Select column_name,
　　Case
　　When data_type = 'NUMBER' Then
　　data_type || '(' || nvl(to_char(data_precision), '*') || ',' ||
　　nvl(to_char(data_scale), 0) || ')'
　　When data_type In ('VARCHAR2', 'CHAR') Then
　　data_type || '(' || to_char(CHAR_LENGTH) || ')'
　　Else
　　DATA_TYPE
　　End As DATA_TYPE,
　　decode(NULLABLE, 'Y', 'N', 'N', 'Y') As Mandatory,
　　data_type AS data_type1,
　　char_length,
　　data_precision,
　　data_scale
　　From user_tab_columns c
　　Where table_name = 'CIS_1WMP_ASM_ADDR_UM_RN'
　　Order By c.COLUMN_ID) T
　　;