ABAP Select data from SAP table BAPITOHEAD 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 BAPITOHEAD 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 BAPITOHEAD. 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 BAPITOHEAD 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_BAPITOHEAD TYPE STANDARD TABLE OF BAPITOHEAD,
      WA_BAPITOHEAD TYPE BAPITOHEAD,
      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: <BAPITOHEAD> TYPE BAPITOHEAD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPITOHEAD
*  INTO TABLE @DATA(IT_BAPITOHEAD2).
*--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_BAPITOHEAD INDEX 1 INTO DATA(WA_BAPITOHEAD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPITOHEAD>-CLIENT = 1.
<BAPITOHEAD>-WHSENUMBER = 1.
<BAPITOHEAD>-TRANS_ORD = 1.
<BAPITOHEAD>-MOVE_TYPE = 1.
<BAPITOHEAD>-WHSE_MVMT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPITOHEAD-TR_PRIOR, sy-vline,
  WA_BAPITOHEAD-TRANS_TYPE, sy-vline,
  WA_BAPITOHEAD-TO_DATE, sy-vline,
  WA_BAPITOHEAD-TO_TIME, sy-vline,
  WA_BAPITOHEAD-TO_USER, sy-vline,
  WA_BAPITOHEAD-GROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPITOHEAD 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_BAPITOHEAD 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_BAPITOHEAD INTO WA_BAPITOHEAD.


*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 GROUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPITOHEAD-GROUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPITOHEAD-GROUP.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit GJAHR, internal->external for field DOC_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_BAPITOHEAD-DOC_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPITOHEAD-DOC_YEAR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field TIMEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BAPITOHEAD-TIMEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPITOHEAD-TIMEUNIT.
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_BAPITOHEAD_STR, 
CLIENT TYPE STRING,
WHSENUMBER TYPE STRING,
TRANS_ORD TYPE STRING,
MOVE_TYPE TYPE STRING,
WHSE_MVMT TYPE STRING,
TR_PRIOR TYPE STRING,
TRANS_TYPE TYPE STRING,
TO_DATE TYPE STRING,
TO_TIME TYPE STRING,
TO_USER TYPE STRING,
GROUP TYPE STRING,
TRANS_REQ TYPE STRING,
POST_CHANG TYPE STRING,
SD_DOC TYPE STRING,
CONF_IND TYPE STRING,
CONF_DATE TYPE STRING,
MAT_DOC TYPE STRING,
DOC_YEAR TYPE STRING,
REGMT_TYPE TYPE STRING,
REGMT_NO TYPE STRING,
PRINT_CODE TYPE STRING,
PRINT_IND TYPE STRING,
PART_SUPPLY TYPE STRING,
IND_IMMED TYPE STRING,
IND_ACCUM TYPE STRING,
IND_DIFF TYPE STRING,
IND_PLND TYPE STRING,
DATE_PLND TYPE STRING,
RESERV_NO TYPE STRING,
ADDIT_NO TYPE STRING,
REQ_TYPE TYPE STRING,
KANBANCONTROLCYCLE TYPE STRING,
KANBAN_NO TYPE STRING,
PERF_DATA TYPE STRING,
ACT_TIMETO TYPE STRING,
REQACTDATA TYPE STRING,
PERSNO TYPE STRING,
PLAN_TIME TYPE STRING,
PLAN_EXT TYPE STRING,
ACTLTIME TYPE STRING,
TIMEUNIT TYPE STRING,
TIMEUNIT_ISO TYPE STRING,
HR_STATUS TYPE STRING,
START_DATE TYPE STRING,
END_DATE TYPE STRING,
START_TIME TYPE STRING,
END_TIME TYPE STRING,
TO_TYPE2 TYPE STRING,
LEAN_WM TYPE STRING,
DOOR TYPE STRING,
STGINGAREA TYPE STRING,
PACK_WM TYPE STRING,
DEV_P_A TYPE STRING,
COMMENT TYPE STRING,
SPECIFIC TYPE STRING,
SD_DOC_CAT TYPE STRING,
QUEUE TYPE STRING,
SEP_CONF TYPE STRING,
DLV_PRIO TYPE STRING,
PICK_CNFMD TYPE STRING,
CONFIRM_HU TYPE STRING,
NO_ITEM TYPE STRING,
SD_DOC_CAT_LONG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPITOHEAD_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_BAPITOHEAD_STR-CLIENT sy-vline 
WA_BAPITOHEAD_STR-WHSENUMBER sy-vline 
WA_BAPITOHEAD_STR-TRANS_ORD sy-vline 
WA_BAPITOHEAD_STR-MOVE_TYPE sy-vline 
WA_BAPITOHEAD_STR-WHSE_MVMT sy-vline 
WA_BAPITOHEAD_STR-TR_PRIOR sy-vline 
WA_BAPITOHEAD_STR-TRANS_TYPE sy-vline 
WA_BAPITOHEAD_STR-TO_DATE sy-vline 
WA_BAPITOHEAD_STR-TO_TIME sy-vline 
WA_BAPITOHEAD_STR-TO_USER sy-vline 
WA_BAPITOHEAD_STR-GROUP sy-vline 
WA_BAPITOHEAD_STR-TRANS_REQ sy-vline 
WA_BAPITOHEAD_STR-POST_CHANG sy-vline 
WA_BAPITOHEAD_STR-SD_DOC sy-vline 
WA_BAPITOHEAD_STR-CONF_IND sy-vline 
WA_BAPITOHEAD_STR-CONF_DATE sy-vline 
WA_BAPITOHEAD_STR-MAT_DOC sy-vline 
WA_BAPITOHEAD_STR-DOC_YEAR sy-vline 
WA_BAPITOHEAD_STR-REGMT_TYPE sy-vline 
WA_BAPITOHEAD_STR-REGMT_NO sy-vline 
WA_BAPITOHEAD_STR-PRINT_CODE sy-vline 
WA_BAPITOHEAD_STR-PRINT_IND sy-vline 
WA_BAPITOHEAD_STR-PART_SUPPLY sy-vline 
WA_BAPITOHEAD_STR-IND_IMMED sy-vline 
WA_BAPITOHEAD_STR-IND_ACCUM sy-vline 
WA_BAPITOHEAD_STR-IND_DIFF sy-vline 
WA_BAPITOHEAD_STR-IND_PLND sy-vline 
WA_BAPITOHEAD_STR-DATE_PLND sy-vline 
WA_BAPITOHEAD_STR-RESERV_NO sy-vline 
WA_BAPITOHEAD_STR-ADDIT_NO sy-vline 
WA_BAPITOHEAD_STR-REQ_TYPE sy-vline 
WA_BAPITOHEAD_STR-KANBANCONTROLCYCLE sy-vline 
WA_BAPITOHEAD_STR-KANBAN_NO sy-vline 
WA_BAPITOHEAD_STR-PERF_DATA sy-vline 
WA_BAPITOHEAD_STR-ACT_TIMETO sy-vline 
WA_BAPITOHEAD_STR-REQACTDATA sy-vline 
WA_BAPITOHEAD_STR-PERSNO sy-vline 
WA_BAPITOHEAD_STR-PLAN_TIME sy-vline 
WA_BAPITOHEAD_STR-PLAN_EXT sy-vline 
WA_BAPITOHEAD_STR-ACTLTIME sy-vline 
WA_BAPITOHEAD_STR-TIMEUNIT sy-vline 
WA_BAPITOHEAD_STR-TIMEUNIT_ISO sy-vline 
WA_BAPITOHEAD_STR-HR_STATUS sy-vline 
WA_BAPITOHEAD_STR-START_DATE sy-vline 
WA_BAPITOHEAD_STR-END_DATE sy-vline 
WA_BAPITOHEAD_STR-START_TIME sy-vline 
WA_BAPITOHEAD_STR-END_TIME sy-vline 
WA_BAPITOHEAD_STR-TO_TYPE2 sy-vline 
WA_BAPITOHEAD_STR-LEAN_WM sy-vline 
WA_BAPITOHEAD_STR-DOOR sy-vline 
WA_BAPITOHEAD_STR-STGINGAREA sy-vline 
WA_BAPITOHEAD_STR-PACK_WM sy-vline 
WA_BAPITOHEAD_STR-DEV_P_A sy-vline 
WA_BAPITOHEAD_STR-COMMENT sy-vline 
WA_BAPITOHEAD_STR-SPECIFIC sy-vline 
WA_BAPITOHEAD_STR-SD_DOC_CAT sy-vline 
WA_BAPITOHEAD_STR-QUEUE sy-vline 
WA_BAPITOHEAD_STR-SEP_CONF sy-vline 
WA_BAPITOHEAD_STR-DLV_PRIO sy-vline 
WA_BAPITOHEAD_STR-PICK_CNFMD sy-vline 
WA_BAPITOHEAD_STR-CONFIRM_HU sy-vline 
WA_BAPITOHEAD_STR-NO_ITEM sy-vline 
WA_BAPITOHEAD_STR-SD_DOC_CAT_LONG sy-vline      INTO ld_text SEPARATED BY SPACE.

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