ABAP Select data from SAP table P01C_BALOG into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P01C_BALOG 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_BALOG. 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_BALOG 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_BALOG TYPE STANDARD TABLE OF P01C_BALOG,
      WA_P01C_BALOG TYPE P01C_BALOG,
      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_BALOG> TYPE P01C_BALOG.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P01C_BALOG.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P01C_BALOG
  INTO TABLE IT_P01C_BALOG.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P01C_BALOG
*  INTO TABLE @DATA(IT_P01C_BALOG2).
*--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_BALOG INDEX 1 INTO DATA(WA_P01C_BALOG2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P01C_BALOG ASSIGNING <P01C_BALOG>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P01C_BALOG>-SEITE = 1.
<P01C_BALOG>-SEQNR = 1.
<P01C_BALOG>-LTTYP = 1.
<P01C_BALOG>-LTRGR = 1.
<P01C_BALOG>-LOGO1 = 1.

ENDLOOP.

LOOP AT IT_P01C_BALOG INTO WA_P01C_BALOG.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P01C_BALOG-LOGO2, sy-vline,
  WA_P01C_BALOG-MAKR1, sy-vline,
  WA_P01C_BALOG-MAKR2, sy-vline,
  WA_P01C_BALOG-ADRS1, sy-vline,
  WA_P01C_BALOG-VKPF1, sy-vline,
  WA_P01C_BALOG-VKPF2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P01C_BALOG 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_BALOG 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_BALOG INTO WA_P01C_BALOG.


*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_BALOG_STR, 
SEITE TYPE STRING,
SEQNR TYPE STRING,
LTTYP TYPE STRING,
LTRGR TYPE STRING,
LOGO1 TYPE STRING,
LOGO2 TYPE STRING,
MAKR1 TYPE STRING,
MAKR2 TYPE STRING,
ADRS1 TYPE STRING,
VKPF1 TYPE STRING,
VKPF2 TYPE STRING,
VFSS1 TYPE STRING,
VFSS2 TYPE STRING,
ANRE1 TYPE STRING,
ANRE2 TYPE STRING,
SIGN1 TYPE STRING,
SIGN2 TYPE STRING,
FUNK1 TYPE STRING,
FUNK2 TYPE STRING,
FUNKA TYPE STRING,
FUNKB TYPE STRING,
SBAN1 TYPE STRING,
SBAN2 TYPE STRING,
SACH1 TYPE STRING,
SACH2 TYPE STRING,
TELE1 TYPE STRING,
TELE2 TYPE STRING,
SPAGE TYPE STRING,
AVERE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P01C_BALOG_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_BALOG_STR-SEITE sy-vline 
WA_P01C_BALOG_STR-SEQNR sy-vline 
WA_P01C_BALOG_STR-LTTYP sy-vline 
WA_P01C_BALOG_STR-LTRGR sy-vline 
WA_P01C_BALOG_STR-LOGO1 sy-vline 
WA_P01C_BALOG_STR-LOGO2 sy-vline 
WA_P01C_BALOG_STR-MAKR1 sy-vline 
WA_P01C_BALOG_STR-MAKR2 sy-vline 
WA_P01C_BALOG_STR-ADRS1 sy-vline 
WA_P01C_BALOG_STR-VKPF1 sy-vline 
WA_P01C_BALOG_STR-VKPF2 sy-vline 
WA_P01C_BALOG_STR-VFSS1 sy-vline 
WA_P01C_BALOG_STR-VFSS2 sy-vline 
WA_P01C_BALOG_STR-ANRE1 sy-vline 
WA_P01C_BALOG_STR-ANRE2 sy-vline 
WA_P01C_BALOG_STR-SIGN1 sy-vline 
WA_P01C_BALOG_STR-SIGN2 sy-vline 
WA_P01C_BALOG_STR-FUNK1 sy-vline 
WA_P01C_BALOG_STR-FUNK2 sy-vline 
WA_P01C_BALOG_STR-FUNKA sy-vline 
WA_P01C_BALOG_STR-FUNKB sy-vline 
WA_P01C_BALOG_STR-SBAN1 sy-vline 
WA_P01C_BALOG_STR-SBAN2 sy-vline 
WA_P01C_BALOG_STR-SACH1 sy-vline 
WA_P01C_BALOG_STR-SACH2 sy-vline 
WA_P01C_BALOG_STR-TELE1 sy-vline 
WA_P01C_BALOG_STR-TELE2 sy-vline 
WA_P01C_BALOG_STR-SPAGE sy-vline 
WA_P01C_BALOG_STR-AVERE sy-vline      INTO ld_text SEPARATED BY SPACE.

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