ABAP Select data from SAP table P01C_BZYAN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P01C_BZYAN table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to P01C_BZYAN. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the P01C_BZYAN table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_P01C_BZYAN TYPE STANDARD TABLE OF P01C_BZYAN,
      WA_P01C_BZYAN TYPE P01C_BZYAN,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <P01C_BZYAN> TYPE P01C_BZYAN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P01C_BZYAN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P01C_BZYAN
  INTO TABLE IT_P01C_BZYAN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P01C_BZYAN
*  INTO TABLE @DATA(IT_P01C_BZYAN2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_P01C_BZYAN INDEX 1 INTO DATA(WA_P01C_BZYAN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P01C_BZYAN ASSIGNING <P01C_BZYAN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P01C_BZYAN>-HANSP = 1.
<P01C_BZYAN>-AANSP = 1.
<P01C_BZYAN>-ANGRP = 1.
<P01C_BZYAN>-ATEXT = 1.
<P01C_BZYAN>-LURSP = 1.

ENDLOOP.

LOOP AT IT_P01C_BZYAN INTO WA_P01C_BZYAN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P01C_BZYAN-LURTY, sy-vline,
  WA_P01C_BZYAN-LURTE, sy-vline,
  WA_P01C_BZYAN-LTRGR, sy-vline,
  WA_P01C_BZYAN-LTRTY, sy-vline,
  WA_P01C_BZYAN-LTRTE, sy-vline,
  WA_P01C_BZYAN-LGART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P01C_BZYAN you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_P01C_BZYAN TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_P01C_BZYAN INTO WA_P01C_BZYAN.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_P01C_BZYAN_STR, 
HANSP TYPE STRING,
AANSP TYPE STRING,
ANGRP TYPE STRING,
ATEXT TYPE STRING,
LURSP TYPE STRING,
LURTY TYPE STRING,
LURTE TYPE STRING,
LTRGR TYPE STRING,
LTRTY TYPE STRING,
LTRTE TYPE STRING,
LGART TYPE STRING,
ANWRT TYPE STRING,
DIFCV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P01C_BZYAN_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_P01C_BZYAN_STR-HANSP sy-vline 
WA_P01C_BZYAN_STR-AANSP sy-vline 
WA_P01C_BZYAN_STR-ANGRP sy-vline 
WA_P01C_BZYAN_STR-ATEXT sy-vline 
WA_P01C_BZYAN_STR-LURSP sy-vline 
WA_P01C_BZYAN_STR-LURTY sy-vline 
WA_P01C_BZYAN_STR-LURTE sy-vline 
WA_P01C_BZYAN_STR-LTRGR sy-vline 
WA_P01C_BZYAN_STR-LTRTY sy-vline 
WA_P01C_BZYAN_STR-LTRTE sy-vline 
WA_P01C_BZYAN_STR-LGART sy-vline 
WA_P01C_BZYAN_STR-ANWRT sy-vline 
WA_P01C_BZYAN_STR-DIFCV sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.