ABAP Select data from SAP table BBP_PDS_DEMAND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BBP_PDS_DEMAND
*  INTO TABLE @DATA(IT_BBP_PDS_DEMAND2).
*--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_BBP_PDS_DEMAND INDEX 1 INTO DATA(WA_BBP_PDS_DEMAND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BBP_PDS_DEMAND>-EXT_DEM_LOGSYS = 1.
<BBP_PDS_DEMAND>-EXT_DEMID = 1.
<BBP_PDS_DEMAND>-EXT_DEM_POSID = 1.
<BBP_PDS_DEMAND>-CTR_NUMBER = 1.
<BBP_PDS_DEMAND>-CTR_ITEM_NUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BBP_PDS_DEMAND-CTR_ITEM_GUID, sy-vline,
  WA_BBP_PDS_DEMAND-BUP_VENDOR_ID, sy-vline,
  WA_BBP_PDS_DEMAND-BUP_VENDOR_GUID, sy-vline,
  WA_BBP_PDS_DEMAND-BUP_LOCATION_ID, sy-vline,
  WA_BBP_PDS_DEMAND-BUP_LOCATION_GUID, sy-vline,
  WA_BBP_PDS_DEMAND-SUBTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BBP_PDS_DEMAND 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_BBP_PDS_DEMAND 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_BBP_PDS_DEMAND INTO WA_BBP_PDS_DEMAND.


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

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

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

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

*Conversion exit PRID1, internal->external for field PRODUCT_ID
CALL FUNCTION 'CONVERSION_EXIT_PRID1_OUTPUT'
  EXPORTING
    input =                      WA_BBP_PDS_DEMAND-PRODUCT_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BBP_PDS_DEMAND-PRODUCT_ID.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ABPSN, internal->external for field WBS_ELEM_E
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_BBP_PDS_DEMAND-WBS_ELEM_E
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BBP_PDS_DEMAND-WBS_ELEM_E.
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_BBP_PDS_DEMAND_STR, 
EXT_DEM_LOGSYS TYPE STRING,
EXT_DEMID TYPE STRING,
EXT_DEM_POSID TYPE STRING,
CTR_NUMBER TYPE STRING,
CTR_ITEM_NUMBER TYPE STRING,
CTR_ITEM_GUID TYPE STRING,
BUP_VENDOR_ID TYPE STRING,
BUP_VENDOR_GUID TYPE STRING,
BUP_LOCATION_ID TYPE STRING,
BUP_LOCATION_GUID TYPE STRING,
SUBTYPE TYPE STRING,
PRODUCT_GUID TYPE STRING,
PRODUCT_ID TYPE STRING,
QUANTITY TYPE STRING,
UNIT TYPE STRING,
DELIV_DATE TYPE STRING,
DELIV_TIME TYPE STRING,
DP_STGE_LOC TYPE STRING,
DP_SP_STK_IND TYPE STRING,
ACC_CAT TYPE STRING,
SD_DOC TYPE STRING,
SDOC_ITEM TYPE STRING,
SCHED_LINE TYPE STRING,
WBS_ELEM_E TYPE STRING,
PRODUCT_SRC_SYS TYPE STRING,
APPR_VENDOR_IDS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BBP_PDS_DEMAND_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_BBP_PDS_DEMAND_STR-EXT_DEM_LOGSYS sy-vline 
WA_BBP_PDS_DEMAND_STR-EXT_DEMID sy-vline 
WA_BBP_PDS_DEMAND_STR-EXT_DEM_POSID sy-vline 
WA_BBP_PDS_DEMAND_STR-CTR_NUMBER sy-vline 
WA_BBP_PDS_DEMAND_STR-CTR_ITEM_NUMBER sy-vline 
WA_BBP_PDS_DEMAND_STR-CTR_ITEM_GUID sy-vline 
WA_BBP_PDS_DEMAND_STR-BUP_VENDOR_ID sy-vline 
WA_BBP_PDS_DEMAND_STR-BUP_VENDOR_GUID sy-vline 
WA_BBP_PDS_DEMAND_STR-BUP_LOCATION_ID sy-vline 
WA_BBP_PDS_DEMAND_STR-BUP_LOCATION_GUID sy-vline 
WA_BBP_PDS_DEMAND_STR-SUBTYPE sy-vline 
WA_BBP_PDS_DEMAND_STR-PRODUCT_GUID sy-vline 
WA_BBP_PDS_DEMAND_STR-PRODUCT_ID sy-vline 
WA_BBP_PDS_DEMAND_STR-QUANTITY sy-vline 
WA_BBP_PDS_DEMAND_STR-UNIT sy-vline 
WA_BBP_PDS_DEMAND_STR-DELIV_DATE sy-vline 
WA_BBP_PDS_DEMAND_STR-DELIV_TIME sy-vline 
WA_BBP_PDS_DEMAND_STR-DP_STGE_LOC sy-vline 
WA_BBP_PDS_DEMAND_STR-DP_SP_STK_IND sy-vline 
WA_BBP_PDS_DEMAND_STR-ACC_CAT sy-vline 
WA_BBP_PDS_DEMAND_STR-SD_DOC sy-vline 
WA_BBP_PDS_DEMAND_STR-SDOC_ITEM sy-vline 
WA_BBP_PDS_DEMAND_STR-SCHED_LINE sy-vline 
WA_BBP_PDS_DEMAND_STR-WBS_ELEM_E sy-vline 
WA_BBP_PDS_DEMAND_STR-PRODUCT_SRC_SYS sy-vline 
WA_BBP_PDS_DEMAND_STR-APPR_VENDOR_IDS sy-vline      INTO ld_text SEPARATED BY SPACE.

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