Error executing pl sql block

Question

Hii All,
I'm facing the following error
ERROR at line 66:
ORA-06550: line 66, column 20:
PLS-00306: wrong number or types of arguments in call to '||'
ORA-06550: line 66, column 11:
PL/SQL: Statement ignoredVersion Details
SQL> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit Production
PL/SQL Release 11.1.0.7.0 - Production
CORE    11.1.0.7.0      Production
TNS for Solaris: Version 11.1.0.7.0 - Production
NLSRTL Version 11.1.0.7.0 - ProductionMy pl sql block
Declare
    p_table_name  clob := 'CP_CA_DTLS' ;
    Type t_column_name_tab is table of varchar2(4000)
    index by binary_integer;
    l_table_tab      t_column_name_tab;
    l_file_name constant varchar2(5000) := 'column_counts';
    l_count      number;
    l_tab_count    number;
    l_str    varchar2(32000);
    l_tbl_str  varchar2(32000);
  Cursor c_table_columns(c_table_name user_tables.table_name%type)
  Is
    Select  column_name
    from  user_tab_cols
    where  table_name = upper(c_table_name);
  Type t_table_columns is table of c_table_columns%rowtype;
   l_column_name_tab  t_table_columns;
Begin
    --Splitting comma seperated data
    Select  regexp_substr(p_table_name,'[^,]+{1}',1,level)
    bulk collect into  l_table_tab
    from  dual
    connect by level <= length(regexp_replace(p_table_name,'[^,]*'))+1;
    for k in 1..l_table_tab.count
    loop
     -- dbg_print(l_file_name,'***'||l_table_tab(k)||'***');   
      Begin
          l_tbl_str := 'Select count(*) from '||l_table_tab(k);
          execute immediate l_tbl_str into l_tab_count;
        --  dbg_print(l_file_name,'Overall Count of table '||l_table_tab(k)||' is '||l_tab_count);   
      End;
   -- dbg_print(l_file_name,'Column Name '||','||'Count'); 
    Open c_table_columns(l_table_tab(k));
    loop
      Fetch c_table_columns bulk collect into l_column_name_tab limit 50;
      exit when l_column_name_tab.count = 0;
      dbms_output.put_line('l_column_name_tab.count count is : '||l_column_name_tab.count);
        for i in 1..l_column_name_tab.count
        loop
        Begin
          l_str := 'Select count(*) ' ;
          l_str := l_str||' from  '||l_table_tab(k) ;
          l_str := l_str||' where '||l_column_name_tab(i);
          l_str := l_str||' is null'  ;
          Execute Immediate l_str into l_count;
        End;
        --dbg_print(l_file_name,l_column_name_tab(i)||','||l_count);
        end loop;
    end loop;
    Close c_table_columns;
  end loop;
      dbms_output.put_line('l_column_name_tab.count count is : '||l_column_name_tab.count);
End;Even I'm not able to print l_column_name_tab(i) using dbms_output.
(Later I came to know that this information can be achieved using user_tab_col_statistics table)
But would like to know whats wrong with my code.???
Plz help me .
Edited by: 792353 on Dec 3, 2010 1:26 AM

Answer 1

Hii RDB,
when I comment this part of code
  --   l_str := l_str||' where '||l_column_name_tab(i);
       --   l_str := l_str||' is null'  ;
SQL> Declare
  2 
  3 
  4      p_table_name  clob := 'CP_CA_DTLS' ;
  5 
  6      Type t_column_name_tab is table of varchar2(4000)
  7      index by binary_integer;
  8     
  9      l_table_tab      t_column_name_tab;
10    
11 
12 
13 
14      l_file_name constant varchar2(5000) := 'column_counts';
15      l_count      number;
16      l_tab_count    number;
17      l_str    varchar2(32000);
18      l_tbl_str  varchar2(32000);
19   
20    Cursor c_table_columns(c_table_name user_tables.table_name%type)
21    Is
22      Select  column_name
23      from  user_tab_cols
24      where  table_name = upper(c_table_name);
25     
26     
27    Type t_table_columns is table of c_table_columns%rowtype;
28   
29   
30     l_column_name_tab  t_table_columns;
31   
32  Begin
33      --Splitting comma seperated data
34     
35      Select  regexp_substr(p_table_name,'[^,]+{1}',1,level)
36      bulk collect into  l_table_tab
37      from  dual
38      connect by level <= length(regexp_replace(p_table_name,'[^,]*'))+1;
39     
40      for k in 1..l_table_tab.count
41      loop
42       -- dbg_print(l_file_name,'***'||l_table_tab(k)||'***');   
43       
44        Begin
45            l_tbl_str := 'Select count(*) from '||l_table_tab(k);
46       
47            execute immediate l_tbl_str into l_tab_count;
48       
49          --  dbg_print(l_file_name,'Overall Count of table '||l_table_tab(k)||' is '||l_tab_coun
t);   
50 
51        End;
52 
53     -- dbg_print(l_file_name,'Column Name '||','||'Count'); 
54 
55      Open c_table_columns(l_table_tab(k));
56      loop
57        Fetch c_table_columns bulk collect into l_column_name_tab limit 50;
58        exit when l_column_name_tab.count = 0;
59        dbms_output.put_line('l_column_name_tab.count count is : '||l_column_name_tab.count);
60          for i in 1..l_column_name_tab.count
61          loop
62          
63          Begin
64            l_str := 'Select count(*) ' ;
65            l_str := l_str||' from  '||l_table_tab(k) ;
66         --   l_str := l_str||' where '||l_column_name_tab(i);
67         --   l_str := l_str||' is null'  ;
68         
69            Execute Immediate l_str into l_count;
70 
71          End;
72         
73          --dbg_print(l_file_name,l_column_name_tab(i)||','||l_count);
74       
75          end loop;
76      end loop;
77      Close c_table_columns;
78    end loop;
79 
80        dbms_output.put_line('l_column_name_tab.count count is : '||l_column_name_tab.count);
81  End;
82  /
PL/SQL procedure successfully completed.its running fine so the problem is l_column_name_tab(i) !!!!!!
and there is nothing wrong with l_table_tab(k) and its declaration.
Edited by: 792353 on Dec 3, 2010 2:17 AM