ABAP Select data from SAP table KBALHDR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KBALHDR 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 KBALHDR. 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 KBALHDR 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_KBALHDR TYPE STANDARD TABLE OF KBALHDR,
      WA_KBALHDR TYPE KBALHDR,
      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: <KBALHDR> TYPE KBALHDR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KBALHDR
*  INTO TABLE @DATA(IT_KBALHDR2).
*--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_KBALHDR INDEX 1 INTO DATA(WA_KBALHDR2).


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

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

ENDLOOP.

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

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


*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 ISOLA, internal->external for field SPRSL
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_KBALHDR-SPRSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KBALHDR-SPRSL.
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_KBALHDR_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,
USEREXITT TYPE STRING,
ALCHDATE TYPE STRING,
ALCHTIME TYPE STRING,
ALCHUSER TYPE STRING,
LOG_HANDLE TYPE STRING,
TABNAME TYPE STRING,
MSG_CNT_AL TYPE STRING,
MSG_CNT_A TYPE STRING,
MSG_CNT_E TYPE STRING,
MSG_CNT_W TYPE STRING,
MSG_CNT_I TYPE STRING,
MSG_CNT_S TYPE STRING,
LAST_MSGNR TYPE STRING,
TIM_STMP TYPE STRING,
DB_VERSION TYPE STRING,
MSG_CNT_P1 TYPE STRING,
MSG_CNT_P2 TYPE STRING,
MSG_CNT_P3 TYPE STRING,
MSG_CNT_P4 TYPE STRING,
CLIENT_CRE TYPE STRING,
CHAR_SIZE TYPE STRING,
_DATAAGING TYPE STRING,
KZ TYPE STRING,
SPRSL TYPE STRING,
ARBGB TYPE STRING,
MSGNR TYPE STRING,
TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KBALHDR_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_KBALHDR_STR-MANDANT sy-vline 
WA_KBALHDR_STR-LOGNUMBER sy-vline 
WA_KBALHDR_STR-OBJECT sy-vline 
WA_KBALHDR_STR-SUBOBJECT sy-vline 
WA_KBALHDR_STR-EXTNUMBER sy-vline 
WA_KBALHDR_STR-ALDATE sy-vline 
WA_KBALHDR_STR-ALTIME sy-vline 
WA_KBALHDR_STR-ALUSER sy-vline 
WA_KBALHDR_STR-ALTCODE sy-vline 
WA_KBALHDR_STR-ALPROG sy-vline 
WA_KBALHDR_STR-ALMODE sy-vline 
WA_KBALHDR_STR-ALTEXT sy-vline 
WA_KBALHDR_STR-USEREXITP sy-vline 
WA_KBALHDR_STR-USEREXITF sy-vline 
WA_KBALHDR_STR-PROBCLASS sy-vline 
WA_KBALHDR_STR-ALDATE_DEL sy-vline 
WA_KBALHDR_STR-DEL_BEFORE sy-vline 
WA_KBALHDR_STR-ALSTATE sy-vline 
WA_KBALHDR_STR-USEREXITT sy-vline 
WA_KBALHDR_STR-ALCHDATE sy-vline 
WA_KBALHDR_STR-ALCHTIME sy-vline 
WA_KBALHDR_STR-ALCHUSER sy-vline 
WA_KBALHDR_STR-LOG_HANDLE sy-vline 
WA_KBALHDR_STR-TABNAME sy-vline 
WA_KBALHDR_STR-MSG_CNT_AL sy-vline 
WA_KBALHDR_STR-MSG_CNT_A sy-vline 
WA_KBALHDR_STR-MSG_CNT_E sy-vline 
WA_KBALHDR_STR-MSG_CNT_W sy-vline 
WA_KBALHDR_STR-MSG_CNT_I sy-vline 
WA_KBALHDR_STR-MSG_CNT_S sy-vline 
WA_KBALHDR_STR-LAST_MSGNR sy-vline 
WA_KBALHDR_STR-TIM_STMP sy-vline 
WA_KBALHDR_STR-DB_VERSION sy-vline 
WA_KBALHDR_STR-MSG_CNT_P1 sy-vline 
WA_KBALHDR_STR-MSG_CNT_P2 sy-vline 
WA_KBALHDR_STR-MSG_CNT_P3 sy-vline 
WA_KBALHDR_STR-MSG_CNT_P4 sy-vline 
WA_KBALHDR_STR-CLIENT_CRE sy-vline 
WA_KBALHDR_STR-CHAR_SIZE sy-vline 
WA_KBALHDR_STR-_DATAAGING sy-vline 
WA_KBALHDR_STR-KZ sy-vline 
WA_KBALHDR_STR-SPRSL sy-vline 
WA_KBALHDR_STR-ARBGB sy-vline 
WA_KBALHDR_STR-MSGNR sy-vline 
WA_KBALHDR_STR-TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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