ABAP Select data from SAP table /ISDFPS/ME_MM_EKPO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ISDFPS/ME_MM_EKPO 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 /ISDFPS/ME_MM_EKPO. 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 /ISDFPS/ME_MM_EKPO 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_/ISDFPS/ME_MM_EKPO TYPE STANDARD TABLE OF /ISDFPS/ME_MM_EKPO,
      WA_/ISDFPS/ME_MM_EKPO TYPE /ISDFPS/ME_MM_EKPO,
      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: </ISDFPS/ME_MM_EKPO> TYPE /ISDFPS/ME_MM_EKPO.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ISDFPS/ME_MM_EKPO
  INTO TABLE IT_/ISDFPS/ME_MM_EKPO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ISDFPS/ME_MM_EKPO
*  INTO TABLE @DATA(IT_/ISDFPS/ME_MM_EKPO2).
*--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_/ISDFPS/ME_MM_EKPO INDEX 1 INTO DATA(WA_/ISDFPS/ME_MM_EKPO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ISDFPS/ME_MM_EKPO ASSIGNING </ISDFPS/ME_MM_EKPO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ISDFPS/ME_MM_EKPO>-PO_NUMBER = 1.
</ISDFPS/ME_MM_EKPO>-PO_ITEM = 1.
</ISDFPS/ME_MM_EKPO>-DELETE_IND = 1.
</ISDFPS/ME_MM_EKPO>-CHANGED_ON = 1.
</ISDFPS/ME_MM_EKPO>-SHORT_TEXT = 1.

ENDLOOP.

LOOP AT IT_/ISDFPS/ME_MM_EKPO INTO WA_/ISDFPS/ME_MM_EKPO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ISDFPS/ME_MM_EKPO-MATERIAL, sy-vline,
  WA_/ISDFPS/ME_MM_EKPO-MAT_GRP, sy-vline,
  WA_/ISDFPS/ME_MM_EKPO-MAT_GRP_EXT, sy-vline,
  WA_/ISDFPS/ME_MM_EKPO-VEND_MAT, sy-vline,
  WA_/ISDFPS/ME_MM_EKPO-QUANTITY, sy-vline,
  WA_/ISDFPS/ME_MM_EKPO-UNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ISDFPS/ME_MM_EKPO 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_/ISDFPS/ME_MM_EKPO 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_/ISDFPS/ME_MM_EKPO INTO WA_/ISDFPS/ME_MM_EKPO.


*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 PO_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/ME_MM_EKPO-PO_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/ME_MM_EKPO-PO_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/ME_MM_EKPO-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/ME_MM_EKPO-MATERIAL.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit ABPSN, internal->external for field WBS_ELEM
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/ME_MM_EKPO-WBS_ELEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/ME_MM_EKPO-WBS_ELEM.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field SAKTO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/ME_MM_EKPO-SAKTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/ME_MM_EKPO-SAKTO.
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_/ISDFPS/ME_MM_EKPO_STR, 
PO_NUMBER TYPE STRING,
PO_ITEM TYPE STRING,
DELETE_IND TYPE STRING,
CHANGED_ON TYPE STRING,
SHORT_TEXT TYPE STRING,
MATERIAL TYPE STRING,
MAT_GRP TYPE STRING,
MAT_GRP_EXT TYPE STRING,
VEND_MAT TYPE STRING,
QUANTITY TYPE STRING,
UNIT TYPE STRING,
PLANT TYPE STRING,
STGE_LOC TYPE STRING,
SUPPL_STGE_LOC TYPE STRING,
NO_MORE_GR TYPE STRING,
PREQ_NO TYPE STRING,
PREQ_ITEM TYPE STRING,
PREQ_NAME TYPE STRING,
PRIO_REQ TYPE STRING,
ADVICE_CODE TYPE STRING,
BASE_UNIT TYPE STRING,
QUANTITY_BME TYPE STRING,
REQ_DOC_CAT_R3 TYPE STRING,
ORDERID TYPE STRING,
COSTCENTER TYPE STRING,
REQ_PLVAR TYPE STRING,
REQ_OTYPE TYPE STRING,
REQ_OBJID TYPE STRING,
SUPPL_PLVAR TYPE STRING,
SUPPL_OTYPE TYPE STRING,
SUPPL_OBJID TYPE STRING,
SERVICE TYPE STRING,
ITEM_CAT TYPE STRING,
DELIV_DATE TYPE STRING,
WBS_ELEM TYPE STRING,
REQ_REF_KEY TYPE STRING,
SUPPL_PLNT TYPE STRING,
SAKTO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ISDFPS/ME_MM_EKPO_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_/ISDFPS/ME_MM_EKPO_STR-PO_NUMBER sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-PO_ITEM sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-DELETE_IND sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-CHANGED_ON sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-SHORT_TEXT sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-MATERIAL sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-MAT_GRP sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-MAT_GRP_EXT sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-VEND_MAT sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-QUANTITY sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-UNIT sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-PLANT sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-STGE_LOC sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-SUPPL_STGE_LOC sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-NO_MORE_GR sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-PREQ_NO sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-PREQ_ITEM sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-PREQ_NAME sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-PRIO_REQ sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-ADVICE_CODE sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-BASE_UNIT sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-QUANTITY_BME sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-REQ_DOC_CAT_R3 sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-ORDERID sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-COSTCENTER sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-REQ_PLVAR sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-REQ_OTYPE sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-REQ_OBJID sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-SUPPL_PLVAR sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-SUPPL_OTYPE sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-SUPPL_OBJID sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-SERVICE sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-ITEM_CAT sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-DELIV_DATE sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-WBS_ELEM sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-REQ_REF_KEY sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-SUPPL_PLNT sy-vline 
WA_/ISDFPS/ME_MM_EKPO_STR-SAKTO sy-vline      INTO ld_text SEPARATED BY SPACE.

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