ABAP Select data from SAP table MMPUR_OTLNE_EKAB_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_OTLNE_EKAB_S
*  INTO TABLE @DATA(IT_MMPUR_OTLNE_EKAB_S2).
*--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_MMPUR_OTLNE_EKAB_S INDEX 1 INTO DATA(WA_MMPUR_OTLNE_EKAB_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_OTLNE_EKAB_S>-MANDT = 1.
<MMPUR_OTLNE_EKAB_S>-PURCHASEOUTLINEAGREEMENT = 1.
<MMPUR_OTLNE_EKAB_S>-PURCHASEOUTLINEAGREEMENTITEM = 1.
<MMPUR_OTLNE_EKAB_S>-PURCHASINGDOCUMENT = 1.
<MMPUR_OTLNE_EKAB_S>-PURCHASINGDOCUMENTITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_OTLNE_EKAB_S-SCHEDULELINEORDERDATE, sy-vline,
  WA_MMPUR_OTLNE_EKAB_S-PURCHASINGDOCUMENTORDERQTY, sy-vline,
  WA_MMPUR_OTLNE_EKAB_S-MATERIALORDERUNIT, sy-vline,
  WA_MMPUR_OTLNE_EKAB_S-PURCHASEORDERNETAMOUNT, sy-vline,
  WA_MMPUR_OTLNE_EKAB_S-DOCUMENTCURRENCY, sy-vline,
  WA_MMPUR_OTLNE_EKAB_S-EXCHANGERATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_OTLNE_EKAB_S 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_MMPUR_OTLNE_EKAB_S 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_MMPUR_OTLNE_EKAB_S INTO WA_MMPUR_OTLNE_EKAB_S.


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

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

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

*Conversion exit EXCRT, internal->external for field EXCHANGERATE
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_OTLNE_EKAB_S-EXCHANGERATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_OTLNE_EKAB_S-EXCHANGERATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGICALSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_OTLNE_EKAB_S-LOGICALSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_OTLNE_EKAB_S-LOGICALSYSTEM.
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_MMPUR_OTLNE_EKAB_S_STR, 
MANDT TYPE STRING,
PURCHASEOUTLINEAGREEMENT TYPE STRING,
PURCHASEOUTLINEAGREEMENTITEM TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
PURCHASINGDOCUMENTITEM TYPE STRING,
SCHEDULELINEORDERDATE TYPE STRING,
PURCHASINGDOCUMENTORDERQTY TYPE STRING,
MATERIALORDERUNIT TYPE STRING,
PURCHASEORDERNETAMOUNT TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
EXCHANGERATE TYPE STRING,
PURCHASINGDOCUMENTDELETIONCODE TYPE STRING,
RELEASEORDERNUMBERINLOCALSYST TYPE STRING,
LOGICALSYSTEM TYPE STRING,
COMPANYCODE TYPE STRING,
PLANT TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
LASTCHANGEDDATE TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
INCOMPLETENESSCATEGORY TYPE STRING,
DATAAGINGOBJECT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_OTLNE_EKAB_S_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_MMPUR_OTLNE_EKAB_S_STR-MANDT sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-PURCHASEOUTLINEAGREEMENT sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-PURCHASEOUTLINEAGREEMENTITEM sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-PURCHASINGDOCUMENT sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-PURCHASINGDOCUMENTITEM sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-SCHEDULELINEORDERDATE sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-PURCHASINGDOCUMENTORDERQTY sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-MATERIALORDERUNIT sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-PURCHASEORDERNETAMOUNT sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-DOCUMENTCURRENCY sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-EXCHANGERATE sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-PURCHASINGDOCUMENTDELETIONCODE sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-RELEASEORDERNUMBERINLOCALSYST sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-LOGICALSYSTEM sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-COMPANYCODE sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-PLANT sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-PURCHASINGORGANIZATION sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-LASTCHANGEDDATE sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-INCOMPLETENESSCATEGORY sy-vline 
WA_MMPUR_OTLNE_EKAB_S_STR-DATAAGINGOBJECT sy-vline      INTO ld_text SEPARATED BY SPACE.

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