ABAP Select data from SAP table MMPUR_S_SA_HDR_WFL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMPUR_S_SA_HDR_WFL 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_S_SA_HDR_WFL. 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_S_SA_HDR_WFL 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_S_SA_HDR_WFL TYPE STANDARD TABLE OF MMPUR_S_SA_HDR_WFL,
      WA_MMPUR_S_SA_HDR_WFL TYPE MMPUR_S_SA_HDR_WFL,
      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_S_SA_HDR_WFL> TYPE MMPUR_S_SA_HDR_WFL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_S_SA_HDR_WFL
*  INTO TABLE @DATA(IT_MMPUR_S_SA_HDR_WFL2).
*--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_S_SA_HDR_WFL INDEX 1 INTO DATA(WA_MMPUR_S_SA_HDR_WFL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_S_SA_HDR_WFL>-MANDT = 1.
<MMPUR_S_SA_HDR_WFL>-SCHEDULINGAGREEMENT = 1.
<MMPUR_S_SA_HDR_WFL>-COMPANYCODE = 1.
<MMPUR_S_SA_HDR_WFL>-PURCHASINGDOCUMENTCATEGORY = 1.
<MMPUR_S_SA_HDR_WFL>-PURCHASINGDOCUMENTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_S_SA_HDR_WFL-PURCHASINGDOCUMENTTYPENAME, sy-vline,
  WA_MMPUR_S_SA_HDR_WFL-CREATEDBYUSER, sy-vline,
  WA_MMPUR_S_SA_HDR_WFL-CREATIONDATE, sy-vline,
  WA_MMPUR_S_SA_HDR_WFL-LANGUAGE, sy-vline,
  WA_MMPUR_S_SA_HDR_WFL-PURCHASINGORGANIZATION, sy-vline,
  WA_MMPUR_S_SA_HDR_WFL-PURCHASINGGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_S_SA_HDR_WFL 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_S_SA_HDR_WFL 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_S_SA_HDR_WFL INTO WA_MMPUR_S_SA_HDR_WFL.


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

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_S_SA_HDR_WFL-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_SA_HDR_WFL-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field SUPPLYINGSUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_S_SA_HDR_WFL-SUPPLYINGSUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_SA_HDR_WFL-SUPPLYINGSUPPLIER.
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_S_SA_HDR_WFL_STR, 
MANDT TYPE STRING,
SCHEDULINGAGREEMENT TYPE STRING,
COMPANYCODE TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASINGDOCUMENTTYPE TYPE STRING,
PURCHASINGDOCUMENTTYPENAME TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
LANGUAGE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
INCOTERMSCLASSIFICATION TYPE STRING,
INCOTERMSTRANSFERLOCATION TYPE STRING,
PAYMENTTERMS TYPE STRING,
CASHDISCOUNT2DAYS TYPE STRING,
CASHDISCOUNT1PERCENT TYPE STRING,
CASHDISCOUNT1DAYS TYPE STRING,
CASHDISCOUNT2PERCENT TYPE STRING,
NETPAYMENTDAYS TYPE STRING,
TARGETAMOUNT TYPE STRING,
EXCHANGERATE TYPE STRING,
EXCHANGERATEISFIXED TYPE STRING,
INCOTERMSLOCATION1 TYPE STRING,
INCOTERMSLOCATION2 TYPE STRING,
INCOTERMSVERSION TYPE STRING,
PURCHASINGDOCUMENTORDERDATE TYPE STRING,
SCHEDULEAGREEMENTHASRELEASEDOC TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERADDRESSID TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
PURCHASINGDOCUMENTORIGIN TYPE STRING,
PURCHASINGDOCUMENTDELETIONCODE TYPE STRING,
QUOTATIONSUBMISSIONDATE TYPE STRING,
SUPPLIERQUOTATIONEXTERNALID TYPE STRING,
SUPPLIERRESPSALESPERSONNAME TYPE STRING,
SUPPLIERPHONENUMBER TYPE STRING,
INVOICINGPARTY TYPE STRING,
SUPPLYINGSUPPLIER TYPE STRING,
COMPANYVATREGISTRATION TYPE STRING,
VATREGISTRATIONCOUNTRY TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
DUMMY_EKKO_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_S_SA_HDR_WFL_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_S_SA_HDR_WFL_STR-MANDT sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-SCHEDULINGAGREEMENT sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-COMPANYCODE sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-PURCHASINGDOCUMENTTYPE sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-PURCHASINGDOCUMENTTYPENAME sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-CREATEDBYUSER sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-CREATIONDATE sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-LANGUAGE sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-PURCHASINGORGANIZATION sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-PURCHASINGGROUP sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-DOCUMENTCURRENCY sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-INCOTERMSCLASSIFICATION sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-INCOTERMSTRANSFERLOCATION sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-PAYMENTTERMS sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-CASHDISCOUNT2DAYS sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-CASHDISCOUNT1PERCENT sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-CASHDISCOUNT1DAYS sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-CASHDISCOUNT2PERCENT sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-NETPAYMENTDAYS sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-TARGETAMOUNT sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-EXCHANGERATE sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-EXCHANGERATEISFIXED sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-INCOTERMSLOCATION1 sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-INCOTERMSLOCATION2 sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-INCOTERMSVERSION sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-PURCHASINGDOCUMENTORDERDATE sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-SCHEDULEAGREEMENTHASRELEASEDOC sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-SUPPLIER sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-SUPPLIERADDRESSID sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-VALIDITYSTARTDATE sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-VALIDITYENDDATE sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-PURCHASINGDOCUMENTORIGIN sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-PURCHASINGDOCUMENTDELETIONCODE sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-QUOTATIONSUBMISSIONDATE sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-SUPPLIERQUOTATIONEXTERNALID sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-SUPPLIERRESPSALESPERSONNAME sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-SUPPLIERPHONENUMBER sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-INVOICINGPARTY sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-SUPPLYINGSUPPLIER sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-COMPANYVATREGISTRATION sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-VATREGISTRATIONCOUNTRY sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-LASTCHANGEDATETIME sy-vline 
WA_MMPUR_S_SA_HDR_WFL_STR-DUMMY_EKKO_INCL_EEW_PS sy-vline      INTO ld_text SEPARATED BY SPACE.

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