在SQLPLUS中格式化输出查询结果(水平方向)----从使用column format中解放出来

一：过程代码

Create Or Replace Procedure Format_Sql(i_Sql In Varchar2) Is
  i_Cursor       Integer Default Dbms_Sql.Open_Cursor();
  Desc_Cols      Dbms_Sql.Desc_Tab;
  i_Status       Integer; --执行状态
  n_Colcnt       Number; --列数
  i_Col_Width    Integer := 3; --列间距,如果觉得太小可以调大一些
  n_Rowcnt       Number := 0; --记录结果行数
  Vc_Columnname  Varchar2(4000); --列头名字
  Vc_Col_Split   Varchar2(4000) := '---'; --记录和列头之间的分割线
  Vc_Columnvalue Varchar2(4000); --列值
  Type Typ_Collength Is Table Of Number Index By Binary_Integer;
  Tab_Typ_Collength Typ_Collength; --存放每一列值的最大长度
  l_Results         Long; --输出结果
Begin
  --第一次循环获取每列值的最大长度
  i_Cursor := Dbms_Sql.Open_Cursor; --打开游标；
  Dbms_Sql.Parse(i_Cursor, i_Sql, Dbms_Sql.Native);
  Dbms_Sql.Describe_Columns(i_Cursor, n_Colcnt, Desc_Cols);
  For i In 1 .. n_Colcnt Loop
    Dbms_Sql.Define_Column(i_Cursor, i, Vc_Columnvalue, 4000);
    Tab_Typ_Collength(i) := Length(Desc_Cols(i).Col_Name);
  End Loop;
  i_Status := Dbms_Sql.Execute(i_Cursor);
  Loop
    Exit When Dbms_Sql.Fetch_Rows(i_Cursor) < 1;
    For i In 1 .. n_Colcnt Loop
      Dbms_Sql.Column_Value(i_Cursor, i, Vc_Columnvalue);
      If Length(Vc_Columnvalue) > Tab_Typ_Collength(i) Then
        Tab_Typ_Collength(i) := Length(Vc_Columnvalue);
      End If;
    End Loop;
  End Loop;
  Dbms_Sql.Close_Cursor(i_Cursor);
  --第二次循环拼接输出结果
  i_Cursor := Dbms_Sql.Open_Cursor; --打开游标；
  Dbms_Sql.Parse(i_Cursor, i_Sql, Dbms_Sql.Native);
  Dbms_Sql.Describe_Columns(i_Cursor, n_Colcnt, Desc_Cols);
  For i In 1 .. n_Colcnt Loop
    Dbms_Sql.Define_Column(i_Cursor, i, Vc_Columnvalue, 4000);
  End Loop;
  i_Status := Dbms_Sql.Execute(i_Cursor);
  Loop
    Exit When Dbms_Sql.Fetch_Rows(i_Cursor) < 1;
    n_Rowcnt  := n_Rowcnt + 1;
    l_Results := l_Results || Rpad(n_Rowcnt, i_Col_Width + 3);
    For i In 1 .. n_Colcnt Loop
      Dbms_Sql.Column_Value(i_Cursor, i, Vc_Columnvalue);
      l_Results := l_Results ||
                   Rpad(Vc_Columnvalue || ' ',
                        Tab_Typ_Collength(i) + i_Col_Width);
    End Loop;
    l_Results := l_Results || Chr(10);
  End Loop;
  --定义列头
  Vc_Columnname := Rpad('NO', i_Col_Width + 3, ' ');
  For i In 1 .. n_Colcnt Loop
    Vc_Columnname := Vc_Columnname ||
                     Rpad(Desc_Cols(i).Col_Name,
                          Tab_Typ_Collength(i) + i_Col_Width,
                          ' ');
    Vc_Col_Split  := Rpad(Vc_Col_Split,
                          Length(Vc_Col_Split) + i_Col_Width,
                          ' ');
    Vc_Col_Split  := Rpad(Vc_Col_Split,
                          Length(Vc_Col_Split) + Tab_Typ_Collength(i),
                          '-');
  End Loop;
  Dbms_Sql.Close_Cursor(i_Cursor);
  --  Vc_Columnname := Vc_Columnname || Chr(10);
  --输出结果
  Dbms_Output.Put_Line('Total Row: ' || n_Rowcnt);
  Dbms_Output.Put_Line(Vc_Columnname);
  Dbms_Output.Put_Line(Vc_Col_Split);
  Dbms_Output.Put_Line(l_Results);
Exception
  When Others Then
    Dbms_Sql.Close_Cursor(i_Cursor);
    Raise;
End;
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二：测试结果

TS@PROD> set serveroutput on size 999999
TS@PROD> select sql_text,sql_id,child_number,hash_value from v$sql Where sql_text Like'select * from emp%';
SQL_TEXT
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
SQL_ID        CHILD_NUMBER HASH_VALUE
------------- ------------ ----------
select * from emp
a2dk8bdn0ujx7            0 1745700775
select * from emp
a2dk8bdn0ujx7            1 1745700775
select * from emp e,dept d where e.deptno = d.deptno
4cs33ya9vumkh            0 2478657104
TS@PROD> exec Format_Sql('select sql_text,sql_id,child_number,hash_value from v$sql Where sql_text Like''select * from emp%''');
Total Row: 3
NO    SQL_TEXT                                               SQL_ID          CHILD_NUMBER   HASH_VALUE
---   ----------------------------------------------------   -------------   ------------   ----------
1     select * from emp                                      a2dk8bdn0ujx7   0              1745700775   
2     select * from emp                                      a2dk8bdn0ujx7   1              1745700775   
3     select * from emp e,dept d where e.deptno = d.deptno   4cs33ya9vumkh   0              2478657104   
PL/SQL procedure successfully completed.
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