table col name get the details of the table column and inserting of values depending on the data type of the column

Hello

I am train to write a procedure where I would spend the table as a parameter name and then the code would determine it is column names, and then he would insert records in each column depending on the data type. could someone help me with this.

Thank you

SM

Hello

Perhaps you need to dummy data just for the table.

Here is my exercise

create or replace
procedure generate_rows(p_table_name varchar2, p_count number)
is
  --
  function insert_statement(p_table_name varchar2) return clob
  is
    l_columns clob;
    l_expressions clob;
    l_sql clob default
      'insert into p_table_name (l_columns) select l_expressions from dual connect by level <= :p_count';
  begin
    select
      -- l_columns
      listagg(lower(column_name), ',') within group (order by column_id),
      -- l_expressions
      listagg(
        case
        when data_type = 'DATE'
          then  'sysdate'
        when data_type like 'TIMESTAMP%'
          then  'systimestamp'
        when data_type = 'NUMBER'
          then  replace('dbms_random.value(1,max)',
                  'max', nvl(data_precision - data_scale, data_length)
                )
        when data_type = 'VARCHAR2'
          then  replace(q'|dbms_random.string('a',data_length)|',
                  'data_length', data_length
                )
        else
                'NULL'
        end, ',') within group (order by column_id)
    into
      l_columns,
      l_expressions
    from user_tab_columns
    where table_name = upper(p_table_name);
    --
    l_sql := replace(replace(replace(l_sql,
      'p_table_name', p_table_name),
      'l_columns', l_columns),
      'l_expressions', l_expressions);
    -- debug
    dbms_output.put_line(l_sql);
    --
    return l_sql;
  end;
begin
  execute immediate insert_statement(p_table_name) using p_count;
end;
/

-- test
create table mytable(
  id number(4,0),
  txt varchar2(10),
  tstz timestamp with time zone,
  dt date,
  xml clob
)
;
set serveroutput on
exec generate_rows('mytable', 10);
select id, txt from mytable
;
drop procedure generate_rows
;
drop table mytable purge
;

Procedure GENERATE_ROWS compiled
Table MYTABLE created.
PL/SQL procedure successfully completed.

insert into mytable (id,txt,tstz,dt,xml) select dbms_random.value(1,4),dbms_random.string('a',10),systimestamp,sysdate,NULL from dual connect by level <= :p_count
        ID TXT
---------- ----------
         3 WnSbyiZRkC
         2 UddzkhktLf
         1 zwfWigHxUp
         2 VlUMPHHotN
         3 adGCKDeokj
         3 CKAHGfuHAY
         2 pqsHrVeHwF
         3 FypZMVshxs
         3 WtbsJPHMDC
         3 TlxYoKbuWp

10 rows selected

Procedure GENERATE_ROWS dropped.
Table MYTABLE dropped.

and here is the vision of Tom Kyte for the same https://asktom.oracle.com/pls/asktom/f?p=100:11:0:P11_QUESTION_ID:2151576678914

Edit: to improve my code, it must use p_count as bind as Tom.

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    Capture.PNG

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    Capture.PNG

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  5  ,menuid      number(5,0)
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30        SYS.DBMS_SQL.RETURN_RESULT(rc);
31*    END;
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PL/SQL procedure successfully completed.

ResultSet #1

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---------- ---------- ---------- ---------- ----------
EMPLOYEENAME
--------------------------------------------------------------------------------
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