ABAP Select data from SAP table P01C_ICHRG into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P01C_ICHRG 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_ICHRG. 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_ICHRG 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_ICHRG TYPE STANDARD TABLE OF P01C_ICHRG,
      WA_P01C_ICHRG TYPE P01C_ICHRG,
      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_ICHRG> TYPE P01C_ICHRG.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P01C_ICHRG.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P01C_ICHRG
  INTO TABLE IT_P01C_ICHRG.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P01C_ICHRG
*  INTO TABLE @DATA(IT_P01C_ICHRG2).
*--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_ICHRG INDEX 1 INTO DATA(WA_P01C_ICHRG2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P01C_ICHRG ASSIGNING <P01C_ICHRG>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P01C_ICHRG>-PERNR = 1.
<P01C_ICHRG>-ATNEW_VAR = 1.
<P01C_ICHRG>-PRIOA = 1.
<P01C_ICHRG>-PRIOL = 1.
<P01C_ICHRG>-HANSP = 1.

ENDLOOP.

LOOP AT IT_P01C_ICHRG INTO WA_P01C_ICHRG.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P01C_ICHRG-AANSP, sy-vline,
  WA_P01C_ICHRG-STGRP, sy-vline,
  WA_P01C_ICHRG-MODBV, sy-vline,
  WA_P01C_ICHRG-ANGRP, sy-vline,
  WA_P01C_ICHRG-ANTYP, sy-vline,
  WA_P01C_ICHRG-ANSPR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P01C_ICHRG 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_ICHRG 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_ICHRG INTO WA_P01C_ICHRG.


*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_ICHRG_STR, 
PERNR TYPE STRING,
ATNEW_VAR TYPE STRING,
PRIOA TYPE STRING,
PRIOL TYPE STRING,
HANSP TYPE STRING,
AANSP TYPE STRING,
STGRP TYPE STRING,
MODBV TYPE STRING,
ANGRP TYPE STRING,
ANTYP TYPE STRING,
ANSPR TYPE STRING,
BASNR TYPE STRING,
RESNR TYPE STRING,
GPENR TYPE STRING,
LURSP TYPE STRING,
LUTYP TYPE STRING,
LTRGR TYPE STRING,
LTTYP TYPE STRING,
RELDT TYPE STRING,
KEYTA TYPE STRING,
RELAG TYPE STRING,
GATYP TYPE STRING,
RELAE TYPE STRING,
EATYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P01C_ICHRG_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_ICHRG_STR-PERNR sy-vline 
WA_P01C_ICHRG_STR-ATNEW_VAR sy-vline 
WA_P01C_ICHRG_STR-PRIOA sy-vline 
WA_P01C_ICHRG_STR-PRIOL sy-vline 
WA_P01C_ICHRG_STR-HANSP sy-vline 
WA_P01C_ICHRG_STR-AANSP sy-vline 
WA_P01C_ICHRG_STR-STGRP sy-vline 
WA_P01C_ICHRG_STR-MODBV sy-vline 
WA_P01C_ICHRG_STR-ANGRP sy-vline 
WA_P01C_ICHRG_STR-ANTYP sy-vline 
WA_P01C_ICHRG_STR-ANSPR sy-vline 
WA_P01C_ICHRG_STR-BASNR sy-vline 
WA_P01C_ICHRG_STR-RESNR sy-vline 
WA_P01C_ICHRG_STR-GPENR sy-vline 
WA_P01C_ICHRG_STR-LURSP sy-vline 
WA_P01C_ICHRG_STR-LUTYP sy-vline 
WA_P01C_ICHRG_STR-LTRGR sy-vline 
WA_P01C_ICHRG_STR-LTTYP sy-vline 
WA_P01C_ICHRG_STR-RELDT sy-vline 
WA_P01C_ICHRG_STR-KEYTA sy-vline 
WA_P01C_ICHRG_STR-RELAG sy-vline 
WA_P01C_ICHRG_STR-GATYP sy-vline 
WA_P01C_ICHRG_STR-RELAE sy-vline 
WA_P01C_ICHRG_STR-EATYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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