ABAP Select data from SAP table BALTB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BALTB
*  INTO TABLE @DATA(IT_BALTB2).
*--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_BALTB INDEX 1 INTO DATA(WA_BALTB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BALTB>-MANDT = 1.
<BALTB>-BUKRS = 1.
<BALTB>-ANLKL = 1.
<BALTB>-OLDN1 = 1.
<BALTB>-OLDN2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BALTB-TCODE, sy-vline,
  WA_BALTB-RCTYP, sy-vline,
  WA_BALTB-BWASL, sy-vline,
  WA_BALTB-BZDAT, sy-vline,
  WA_BALTB-ANBTR01, sy-vline,
  WA_BALTB-ANBTR02, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BALTB 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_BALTB 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_BALTB INTO WA_BALTB.


*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.

*Conversion exit ALPHA, internal->external for field ANLKL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BALTB-ANLKL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BALTB-ANLKL.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_BALTB_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
ANLKL TYPE STRING,
OLDN1 TYPE STRING,
OLDN2 TYPE STRING,
TCODE TYPE STRING,
RCTYP TYPE STRING,
BWASL TYPE STRING,
BZDAT TYPE STRING,
ANBTR01 TYPE STRING,
ANBTR02 TYPE STRING,
ANBTR03 TYPE STRING,
ANBTR04 TYPE STRING,
ANBTR05 TYPE STRING,
ANBTR06 TYPE STRING,
ANBTR07 TYPE STRING,
ANBTR08 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BALTB_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_BALTB_STR-MANDT sy-vline 
WA_BALTB_STR-BUKRS sy-vline 
WA_BALTB_STR-ANLKL sy-vline 
WA_BALTB_STR-OLDN1 sy-vline 
WA_BALTB_STR-OLDN2 sy-vline 
WA_BALTB_STR-TCODE sy-vline 
WA_BALTB_STR-RCTYP sy-vline 
WA_BALTB_STR-BWASL sy-vline 
WA_BALTB_STR-BZDAT sy-vline 
WA_BALTB_STR-ANBTR01 sy-vline 
WA_BALTB_STR-ANBTR02 sy-vline 
WA_BALTB_STR-ANBTR03 sy-vline 
WA_BALTB_STR-ANBTR04 sy-vline 
WA_BALTB_STR-ANBTR05 sy-vline 
WA_BALTB_STR-ANBTR06 sy-vline 
WA_BALTB_STR-ANBTR07 sy-vline 
WA_BALTB_STR-ANBTR08 sy-vline      INTO ld_text SEPARATED BY SPACE.

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