Thursday, November 24, 2011

Noetix: Generating a (XU2) Column-Addition Script

In order to use the code below you need to replace the values for v_ViewLabel and v_ColumnLabel in the block with values that are relevant to the column you are trying to add. This script uses the standard DBMS_OUTPUT package to output the script - depending on the nature of the column you're copying this could be quite big.

If you want to include new tables in your column addition script then set the v_IncludeWhere clause to Y (otherwise only the new column script will be generated).

The script is below;

declare
  v_ViewLabel    n_view_column_templates.view_label%TYPE := 'GMF_Order_Details_Base'; -- Must be direct value from table, case sensitive!
  v_ColumnLabel  n_view_column_templates.column_label%TYPE := 'Location';
  v_IncludeWhere varchar2(1) := 'N'; -- Must be either Y or N
  v_ColumnCount  number := 1;

  v_HeaderSQL varchar2(4000);
  v_DataSQL   varchar2(4000);
  v_SQL       varchar2(4000);
  v_result    varchar2(4000);

  procedure AddToHeader(v_Text in varchar) as
  begin
    if length(v_HeaderSQL) > 100 then
      dbms_output.put_line(v_headerSQL);
      v_headerSQL := '  ';
    end if;
    v_headerSQL := v_headerSQL || v_Text;
  end;
begin
  dbms_output.put_line('@utlspon ' || lower(v_ViewLabel) || '_' ||
                       lower(v_ColumnLabel) || '_xu2');
  dbms_output.put_line('');
  dbms_output.put_line('COLUMN max_col NEW_VALUE max_col_position');
  dbms_output.put_line('');
  dbms_output.put_line('SELECT MAX(column_position) max_col');
  dbms_output.put_line('FROM   n_view_column_templates');
  dbms_output.put_line('WHERE  view_label = ''' || v_ViewLabel || ''';');
  dbms_output.put_line('');

  if (v_IncludeWhere = 'Y') then
    dbms_output.put_line('COLUMN max_where NEW_VALUE max_where_position');
    dbms_output.put_line('');
    dbms_output.put_line('SELECT MAX(where_clause_position) max_where');
    dbms_output.put_line('FROM   n_view_where_templates');
    dbms_output.put_line('WHERE  view_label = ''' || v_ViewLabel || ''';');
    dbms_output.put_line('');
    dbms_output.put_line('COLUMN max_from NEW_VALUE max_from_position');
    dbms_output.put_line('');
    dbms_output.put_line('SELECT MAX(from_clause_position) max_from');
    dbms_output.put_line('FROM   n_view_table_templates');
    dbms_output.put_line('WHERE  view_label = ''' || v_ViewLabel || ''';');
    dbms_output.put_line('');
 
    for v_Data in (select n.*, n.rowid
                     from n_view_table_templates n
                    where n.view_label = v_ViewLabel
                      and n.table_alias in
                          (select n.table_alias
                             from n_view_column_templates n
                            where n.view_label = v_ViewLabel
                              and n.column_label = v_ColumnLabel)) loop
      v_HeaderSQL := '  ';
      v_DataSQL   := '';
      dbms_output.put_line('INSERT INTO n_view_table_templates(');
      for v_Column in (select atc.column_name,
                              atc.data_type,
                              atc.column_id,
                              (select max(atc2.column_id)
                                 from all_tab_columns atc2
                                where atc2.owner = USER
                                  AND atc2.column_name not in
                                      ('INCLUDE_FLAG',
                                       'GEN_SEARCH_BY_COL_FLAG')
                                  and atc2.table_name = atc.table_name) as max_column_id
                         from all_tab_columns atc
                        where atc.owner = USER
                          and atc.table_name = 'N_VIEW_TABLE_TEMPLATES'
                          AND atc.column_name not in
                              ('INCLUDE_FLAG', 'GEN_SEARCH_BY_COL_FLAG')
                        order by atc.column_id) loop
        v_SQL := 'SELECT T.' || V_Column.Column_name ||
                 ' FROM N_VIEW_TABLE_TEMPLATES T WHERE T.ROWID = ''' ||
                 v_Data.rowid || '''';
        EXECUTE IMMEDIATE v_SQL
          into v_result;
        if instr(v_Result, '''') > 0 then
          v_Result := Replace(v_result, '''', '''''');
        end if;
        if v_Column.Column_Name = 'FROM_CLAUSE_POSITION' then
          v_result := '(&max_from_position + ' || to_char(v_ColumnCount) || ')';
        end if;
        if v_Column.Column_Name = 'LAST_UPDATE_DATE' then
          v_result := SYSDATE;
        end if;
     
        if (v_result is not null) then
          if (v_Column.Column_Id = v_Column.Max_Column_Id) then
            AddToheader(lower(V_Column.Column_name) || ')');
            v_DataSQL := v_DataSQL || case
                           when v_Column.Data_Type = 'VARCHAR2' then
                            '  ''' || v_result || ''') -- ' ||
                            lower(V_Column.Column_name)
                           when v_Column.Data_Type = 'NUMBER' then
                            '  ' || v_result || ') -- ' || lower(V_Column.Column_name)
                           when v_Column.Data_Type = 'DATE' then
                            '  TO_DATE(''' || v_result || ''')) -- ' ||
                            lower(V_Column.Column_name)
                           else
                            '** ERROR **' || v_Result
                         end;
          else
            AddToHeader(lower(V_Column.Column_name) || ', ');
            v_DataSQL := v_DataSQL || case
                           when v_Column.Data_Type = 'VARCHAR2' then
                            '  ''' || v_result || ''', -- ' ||
                            lower(V_Column.Column_name)
                           when v_Column.Data_Type = 'NUMBER' then
                            '  ' || v_result || ', -- ' || lower(V_Column.Column_name)
                           when v_Column.Data_Type = 'DATE' then
                            '  TO_DATE(''' || v_result || '''), -- ' ||
                            lower(V_Column.Column_name)
                           else
                            '** ERROR **' || v_Result
                         end || chr(13);
          end if;
        end if;
      end loop;
      dbms_output.put_line(v_headerSQL);
      dbms_output.put_line('VALUES(');
      dbms_output.put_line(v_DataSQL);
      dbms_output.put_line(';');
      v_ColumnCount := v_ColumnCount + 1;
      dbms_output.put_line('');
    end loop;
 
    v_ColumnCount := 1;
    for v_Data in (select n.*, n.rowid
                     from n_view_where_templates n
                    where n.view_label = v_ViewLabel
                      and n.where_clause like
                          '%' ||
                          (select q.table_alias
                             from n_view_column_templates q
                            where q.view_label = v_ViewLabel
                              and q.column_label = v_ColumnLabel
                              and q.QUERY_POSITION  = n.QUERY_POSITION) || '%') loop
      v_HeaderSQL := '  ';
      v_DataSQL   := '';
      dbms_output.put_line('INSERT INTO n_view_where_templates(');
      for v_Column in (select atc.column_name,
                              atc.data_type,
                              atc.column_id,
                              (select max(atc2.column_id)
                                 from all_tab_columns atc2
                                where atc2.owner = USER
                                  AND atc2.column_name not in
                                      ('INCLUDE_FLAG')
                                  and atc2.table_name = atc.table_name) as max_column_id
                         from all_tab_columns atc
                        where atc.owner = USER
                          and atc.table_name = 'N_VIEW_WHERE_TEMPLATES'
                          AND atc.column_name not in ('INCLUDE_FLAG')
                        order by atc.column_id) loop
        v_SQL := 'SELECT T.' || V_Column.Column_name ||
                 ' FROM N_VIEW_WHERE_TEMPLATES T WHERE T.ROWID = ''' ||
                 v_Data.rowid || '''';
        EXECUTE IMMEDIATE v_SQL
          into v_result;
        if instr(v_Result, '''') > 0 then
          v_Result := Replace(v_result, '''', '''''');
        end if;
        if v_Column.Column_Name = 'WHERE_CLAUSE_POSITION' then
          v_result := '(&max_where_position + ' || to_char(v_ColumnCount) || ')';
        end if;
        if v_Column.Column_Name = 'LAST_UPDATE_DATE' then
          v_result := SYSDATE;
        end if;
     
        if (v_result is not null) then
          if (v_Column.Column_Id = v_Column.Max_Column_Id) then
            AddToheader(lower(V_Column.Column_name) || ')');
            v_DataSQL := v_DataSQL || case
                           when v_Column.Data_Type = 'VARCHAR2' then
                            '  ''' || v_result || ''') -- ' ||
                            lower(V_Column.Column_name)
                           when v_Column.Data_Type = 'NUMBER' then
                            '  ' || v_result || ') -- ' || lower(V_Column.Column_name)
                           when v_Column.Data_Type = 'DATE' then
                            '  TO_DATE(''' || v_result || ''')) -- ' ||
                            lower(V_Column.Column_name)
                           else
                            '** ERROR **' || v_Result
                         end;
          else
            AddToHeader(lower(V_Column.Column_name) || ', ');
            v_DataSQL := v_DataSQL || case
                           when v_Column.Data_Type = 'VARCHAR2' then
                            '  ''' || v_result || ''', -- ' ||
                            lower(V_Column.Column_name)
                           when v_Column.Data_Type = 'NUMBER' then
                            '  ' || v_result || ', -- ' || lower(V_Column.Column_name)
                           when v_Column.Data_Type = 'DATE' then
                            '  TO_DATE(''' || v_result || '''), -- ' ||
                            lower(V_Column.Column_name)
                           else
                            '** ERROR **' || v_Result
                         end || chr(13);
          end if;
        end if;
      end loop;
      dbms_output.put_line(v_headerSQL);
      dbms_output.put_line('VALUES(');
      dbms_output.put_line(v_DataSQL);
      dbms_output.put_line(';');
      v_ColumnCount := v_ColumnCount + 1;
      dbms_output.put_line('');
    end loop;
  end if;
  v_ColumnCount := 1;
  for v_Data in (select n.*, n.rowid
                   from n_view_column_templates n
                  where n.view_label = v_ViewLabel
                    and lower(n.column_label) = lower(v_ColumnLabel)) loop
    v_HeaderSQL := '  ';
    v_DataSQL   := '';
    dbms_output.put_line('INSERT INTO n_view_column_templates(');
    for v_Column in (select atc.column_name,
                            atc.data_type,
                            atc.column_id,
                            (select max(atc2.column_id)
                               from all_tab_columns atc2
                              where atc2.owner = USER
                                AND atc2.column_name not in ('INCLUDE_FLAG')
                                and atc2.table_name = atc.table_name) as max_column_id
                       from all_tab_columns atc
                      where atc.owner = USER
                        and atc.table_name = 'N_VIEW_COLUMN_TEMPLATES'
                        AND atc.column_name not in ('INCLUDE_FLAG')
                      order by atc.column_id) loop
      v_SQL := 'SELECT T.' || V_Column.Column_name ||
               ' FROM N_VIEW_COLUMN_TEMPLATES T WHERE T.ROWID = ''' ||
               v_Data.rowid || '''';
      EXECUTE IMMEDIATE v_SQL
        into v_result;
      if instr(v_Result, '''') > 0 then
        v_Result := Replace(v_result, '''', '''''');
      end if;
      if v_Column.Column_Name = 'COLUMN_POSITION' then
        v_result := '(&max_from_position + ' || to_char(v_ColumnCount) || ')';
      end if;
      if v_Column.Column_Name = 'LAST_UPDATE_DATE' then
        v_result := SYSDATE;
      end if;
   
      if (v_result is not null) then
        if (v_Column.Column_Id = v_Column.Max_Column_Id) then
          AddToheader(lower(V_Column.Column_name) || ')');
          v_DataSQL := v_DataSQL || case
                         when v_Column.Data_Type = 'VARCHAR2' then
                          '  ''' || v_result || ''') -- ' ||
                          lower(V_Column.Column_name)
                         when v_Column.Data_Type = 'NUMBER' then
                          '  ' || v_result || ') -- ' || lower(V_Column.Column_name)
                         when v_Column.Data_Type = 'DATE' then
                          '  TO_DATE(''' || v_result || ''')) -- ' ||
                          lower(V_Column.Column_name)
                         else
                          '** ERROR **' || v_Result
                       end;
        else
          AddToHeader(lower(V_Column.Column_name) || ', ');
          v_DataSQL := v_DataSQL || case
                         when v_Column.Data_Type = 'VARCHAR2' then
                          '  ''' || v_result || ''', -- ' ||
                          lower(V_Column.Column_name)
                         when v_Column.Data_Type = 'NUMBER' then
                          '  ' || v_result || ', -- ' || lower(V_Column.Column_name)
                         when v_Column.Data_Type = 'DATE' then
                          '  TO_DATE(''' || v_result || '''), -- ' ||
                          lower(V_Column.Column_name)
                         else
                          '** ERROR **' || v_Result
                       end || chr(13);
        end if;
      end if;
    end loop;
    dbms_output.put_line(v_headerSQL);
    dbms_output.put_line('VALUES(');
    dbms_output.put_line(v_DataSQL);
    dbms_output.put_line(';');
 
    v_ColumnCount := v_ColumnCount + 1;
    dbms_output.put_line('');
  end loop;

  dbms_output.put_line('COMMIT;');
  dbms_output.put_line('');
  dbms_output.put_line('@utlspoff');

end;

Post a Comment