ABAP Select data from SAP table BALHDR_OLD into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP BALHDR_OLD 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 BALHDR_OLD. 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 BALHDR_OLD 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_BALHDR_OLD TYPE STANDARD TABLE OF BALHDR_OLD,
      WA_BALHDR_OLD TYPE BALHDR_OLD,
      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: <BALHDR_OLD> TYPE BALHDR_OLD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BALHDR_OLD
*  INTO TABLE @DATA(IT_BALHDR_OLD2).
*--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_BALHDR_OLD INDEX 1 INTO DATA(WA_BALHDR_OLD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BALHDR_OLD>-MANDANT = 1.
<BALHDR_OLD>-LOGNUMBER = 1.
<BALHDR_OLD>-OBJECT = 1.
<BALHDR_OLD>-SUBOBJECT = 1.
<BALHDR_OLD>-EXTNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BALHDR_OLD-ALDATE, sy-vline,
  WA_BALHDR_OLD-ALTIME, sy-vline,
  WA_BALHDR_OLD-ALUSER, sy-vline,
  WA_BALHDR_OLD-ALTCODE, sy-vline,
  WA_BALHDR_OLD-ALPROG, sy-vline,
  WA_BALHDR_OLD-ALMODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BALHDR_OLD 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_BALHDR_OLD 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_BALHDR_OLD INTO WA_BALHDR_OLD.


*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_BALHDR_OLD_STR, 
MANDANT TYPE STRING,
LOGNUMBER TYPE STRING,
OBJECT TYPE STRING,
SUBOBJECT TYPE STRING,
EXTNUMBER TYPE STRING,
ALDATE TYPE STRING,
ALTIME TYPE STRING,
ALUSER TYPE STRING,
ALTCODE TYPE STRING,
ALPROG TYPE STRING,
ALMODE TYPE STRING,
ALTEXT TYPE STRING,
USEREXITP TYPE STRING,
USEREXITF TYPE STRING,
PROBCLASS TYPE STRING,
ALDATE_DEL TYPE STRING,
DEL_BEFORE TYPE STRING,
ALSTATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BALHDR_OLD_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_BALHDR_OLD_STR-MANDANT sy-vline 
WA_BALHDR_OLD_STR-LOGNUMBER sy-vline 
WA_BALHDR_OLD_STR-OBJECT sy-vline 
WA_BALHDR_OLD_STR-SUBOBJECT sy-vline 
WA_BALHDR_OLD_STR-EXTNUMBER sy-vline 
WA_BALHDR_OLD_STR-ALDATE sy-vline 
WA_BALHDR_OLD_STR-ALTIME sy-vline 
WA_BALHDR_OLD_STR-ALUSER sy-vline 
WA_BALHDR_OLD_STR-ALTCODE sy-vline 
WA_BALHDR_OLD_STR-ALPROG sy-vline 
WA_BALHDR_OLD_STR-ALMODE sy-vline 
WA_BALHDR_OLD_STR-ALTEXT sy-vline 
WA_BALHDR_OLD_STR-USEREXITP sy-vline 
WA_BALHDR_OLD_STR-USEREXITF sy-vline 
WA_BALHDR_OLD_STR-PROBCLASS sy-vline 
WA_BALHDR_OLD_STR-ALDATE_DEL sy-vline 
WA_BALHDR_OLD_STR-DEL_BEFORE sy-vline 
WA_BALHDR_OLD_STR-ALSTATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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