ABAP Select data from SAP table BAPITSWPARTCOMM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPITSWPARTCOMM
*  INTO TABLE @DATA(IT_BAPITSWPARTCOMM2).
*--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_BAPITSWPARTCOMM INDEX 1 INTO DATA(WA_BAPITSWPARTCOMM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPITSWPARTCOMM>-COMMUNICATION_ID_INTERNAL = 1.
<BAPITSWPARTCOMM>-COMMUNICATION_ID_EXTERNAL = 1.
<BAPITSWPARTCOMM>-NOMINATIONTECHNICALKEY = 1.
<BAPITSWPARTCOMM>-NOMINATIONITEMNUMBER = 1.
<BAPITSWPARTCOMM>-ROLETYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPITSWPARTCOMM-NOMINATIONSCHEDULEDATEFROM, sy-vline,
  WA_BAPITSWPARTCOMM-NOMINATIONSCHEDULEDATETO, sy-vline,
  WA_BAPITSWPARTCOMM-LOCATIONID, sy-vline,
  WA_BAPITSWPARTCOMM-SCHEDULEMATERIAL, sy-vline,
  WA_BAPITSWPARTCOMM-SCHEDULEQUANTITY, sy-vline,
  WA_BAPITSWPARTCOMM-SCHEDULEUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPITSWPARTCOMM 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_BAPITSWPARTCOMM 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_BAPITSWPARTCOMM INTO WA_BAPITSWPARTCOMM.


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

*Conversion exit MATN5, internal->external for field SCHEDULEMATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN5_OUTPUT'
  EXPORTING
    input =                      WA_BAPITSWPARTCOMM-SCHEDULEMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPITSWPARTCOMM-SCHEDULEMATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SCHEDULEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BAPITSWPARTCOMM-SCHEDULEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPITSWPARTCOMM-SCHEDULEUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SCHEDULERATETIMEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BAPITSWPARTCOMM-SCHEDULERATETIMEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPITSWPARTCOMM-SCHEDULERATETIMEUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field SCHEDULEMATERIAL_LONG
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_BAPITSWPARTCOMM-SCHEDULEMATERIAL_LONG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPITSWPARTCOMM-SCHEDULEMATERIAL_LONG.
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_BAPITSWPARTCOMM_STR, 
COMMUNICATION_ID_INTERNAL TYPE STRING,
COMMUNICATION_ID_EXTERNAL TYPE STRING,
NOMINATIONTECHNICALKEY TYPE STRING,
NOMINATIONITEMNUMBER TYPE STRING,
ROLETYPE TYPE STRING,
NOMINATIONSCHEDULEDATEFROM TYPE STRING,
NOMINATIONSCHEDULEDATETO TYPE STRING,
LOCATIONID TYPE STRING,
SCHEDULEMATERIAL TYPE STRING,
SCHEDULEQUANTITY TYPE STRING,
SCHEDULEUNIT TYPE STRING,
SCHEDULEUNIT_ISO TYPE STRING,
SCHEDULERATEQUANTITY TYPE STRING,
SCHEDULERATETIMEUNIT TYPE STRING,
SCHEDULERATETIMEUNIT_ISO TYPE STRING,
COMMUNICATIONSTATUS TYPE STRING,
COMMUNICATIONDATE TYPE STRING,
CONFIRMQUANTITY TYPE STRING,
TECHNICALSCHEDQUANITY TYPE STRING,
SCHEDULEMATERIAL_LONG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPITSWPARTCOMM_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_BAPITSWPARTCOMM_STR-COMMUNICATION_ID_INTERNAL sy-vline 
WA_BAPITSWPARTCOMM_STR-COMMUNICATION_ID_EXTERNAL sy-vline 
WA_BAPITSWPARTCOMM_STR-NOMINATIONTECHNICALKEY sy-vline 
WA_BAPITSWPARTCOMM_STR-NOMINATIONITEMNUMBER sy-vline 
WA_BAPITSWPARTCOMM_STR-ROLETYPE sy-vline 
WA_BAPITSWPARTCOMM_STR-NOMINATIONSCHEDULEDATEFROM sy-vline 
WA_BAPITSWPARTCOMM_STR-NOMINATIONSCHEDULEDATETO sy-vline 
WA_BAPITSWPARTCOMM_STR-LOCATIONID sy-vline 
WA_BAPITSWPARTCOMM_STR-SCHEDULEMATERIAL sy-vline 
WA_BAPITSWPARTCOMM_STR-SCHEDULEQUANTITY sy-vline 
WA_BAPITSWPARTCOMM_STR-SCHEDULEUNIT sy-vline 
WA_BAPITSWPARTCOMM_STR-SCHEDULEUNIT_ISO sy-vline 
WA_BAPITSWPARTCOMM_STR-SCHEDULERATEQUANTITY sy-vline 
WA_BAPITSWPARTCOMM_STR-SCHEDULERATETIMEUNIT sy-vline 
WA_BAPITSWPARTCOMM_STR-SCHEDULERATETIMEUNIT_ISO sy-vline 
WA_BAPITSWPARTCOMM_STR-COMMUNICATIONSTATUS sy-vline 
WA_BAPITSWPARTCOMM_STR-COMMUNICATIONDATE sy-vline 
WA_BAPITSWPARTCOMM_STR-CONFIRMQUANTITY sy-vline 
WA_BAPITSWPARTCOMM_STR-TECHNICALSCHEDQUANITY sy-vline 
WA_BAPITSWPARTCOMM_STR-SCHEDULEMATERIAL_LONG sy-vline      INTO ld_text SEPARATED BY SPACE.

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