ABAP Select data from SAP table MMPUR_CENTRAL_SOURCING into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMPUR_CENTRAL_SOURCING 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_CENTRAL_SOURCING. 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_CENTRAL_SOURCING 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_CENTRAL_SOURCING TYPE STANDARD TABLE OF MMPUR_CENTRAL_SOURCING,
      WA_MMPUR_CENTRAL_SOURCING TYPE MMPUR_CENTRAL_SOURCING,
      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_CENTRAL_SOURCING> TYPE MMPUR_CENTRAL_SOURCING.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_CENTRAL_SOURCING
*  INTO TABLE @DATA(IT_MMPUR_CENTRAL_SOURCING2).
*--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_CENTRAL_SOURCING INDEX 1 INTO DATA(WA_MMPUR_CENTRAL_SOURCING2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_CENTRAL_SOURCING>-CREATE_CENTRAL_PO = 1.
<MMPUR_CENTRAL_SOURCING>-PURCHASINGDOCUMENT = 1.
<MMPUR_CENTRAL_SOURCING>-COMPANYCODE = 1.
<MMPUR_CENTRAL_SOURCING>-CREATIONDATE = 1.
<MMPUR_CENTRAL_SOURCING>-CREATEDBYUSER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_CENTRAL_SOURCING-PROCMTHUBSUPPLIER, sy-vline,
  WA_MMPUR_CENTRAL_SOURCING-PROCMTHUBPURCHASINGORG, sy-vline,
  WA_MMPUR_CENTRAL_SOURCING-PROCMTHUBPURCHASINGGROUP, sy-vline,
  WA_MMPUR_CENTRAL_SOURCING-LANGUAGE, sy-vline,
  WA_MMPUR_CENTRAL_SOURCING-PROCMTHUBDOCUMENTCURRENCY, sy-vline,
  WA_MMPUR_CENTRAL_SOURCING-PROCMTHUBPAYMENTTERMS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_CENTRAL_SOURCING 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_CENTRAL_SOURCING 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_CENTRAL_SOURCING INTO WA_MMPUR_CENTRAL_SOURCING.


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

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

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

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

*Conversion exit ALPHA, internal->external for field PURCHASINGDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_CENTRAL_SOURCING-PURCHASINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_CENTRAL_SOURCING-PURCHASINGDOCUMENT.
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_CENTRAL_SOURCING_STR, 
CREATE_CENTRAL_PO TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
COMPANYCODE TYPE STRING,
CREATIONDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
PROCMTHUBSUPPLIER TYPE STRING,
PROCMTHUBPURCHASINGORG TYPE STRING,
PROCMTHUBPURCHASINGGROUP TYPE STRING,
LANGUAGE TYPE STRING,
PROCMTHUBDOCUMENTCURRENCY TYPE STRING,
PROCMTHUBPAYMENTTERMS TYPE STRING,
CASHDISCOUNT1DAYS TYPE STRING,
CASHDISCOUNT2DAYS TYPE STRING,
CASHDISCOUNTDAYS TYPE STRING,
CASHDISCOUNT1PERCENT TYPE STRING,
CASHDISCOUNT2PERCENT TYPE STRING,
PROCMTHUBINCOTERMSCLASSFCTN TYPE STRING,
PROCMTHUBINCOTERMSLOCATION1 TYPE STRING,
FOLLOWONDOCHDRX TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
PURCHASINGDOCUMENTX TYPE STRING,
COMPANYCODE TYPE STRING,
CREATIONDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
PROCMTHUBSUPPLIER TYPE STRING,
PROCMTHUBPURCHASINGORG TYPE STRING,
PROCMTHUBPURCHASINGGROUP TYPE STRING,
LANGUAGE TYPE STRING,
PROCMTHUBDOCUMENTCURRENCY TYPE STRING,
PROCMTHUBPAYMENTTERMS TYPE STRING,
CASHDISCOUNT1DAYS TYPE STRING,
CASHDISCOUNT2DAYS TYPE STRING,
CASHDISCOUNTDAYS TYPE STRING,
CASHDISCOUNT1PERCENT TYPE STRING,
CASHDISCOUNT2PERCENT TYPE STRING,
PROCMTHUBINCOTERMSCLASSFCTN TYPE STRING,
PROCMTHUBINCOTERMSLOCATION1 TYPE STRING,
FOLLOWONDOCITMSET TYPE STRING,
FOLLOWONDOCITMSETX TYPE STRING,
FOLLOWONDOCSCHEDULELINESET TYPE STRING,
FOLLOWONDOCSCHEDULELINESETX TYPE STRING,
FOLLOWONDOCCONDITIONSET TYPE STRING,
FOLLOWONDOCCONDITIONSETX TYPE STRING,
FOLLOWONDOCADDRSET TYPE STRING,
FOLLOWONDOCADDRSETX TYPE STRING,
FOLLOWONDOCCONTROL TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
PURCHASINGDOCISCONSISTENT TYPE STRING,
PURCHASINGDOCISINCONSISTENT TYPE STRING,
PURCHASINGDOCUMENTISPARKED TYPE STRING,
FOLLOWONDOCMESSAGESET TYPE STRING,
FOLLOWONDOCEXTNINCLUDE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_CENTRAL_SOURCING_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_CENTRAL_SOURCING_STR-CREATE_CENTRAL_PO sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PURCHASINGDOCUMENT sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-COMPANYCODE sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-CREATIONDATE sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-CREATEDBYUSER sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PROCMTHUBSUPPLIER sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PROCMTHUBPURCHASINGORG sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PROCMTHUBPURCHASINGGROUP sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-LANGUAGE sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PROCMTHUBDOCUMENTCURRENCY sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PROCMTHUBPAYMENTTERMS sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-CASHDISCOUNT1DAYS sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-CASHDISCOUNT2DAYS sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-CASHDISCOUNTDAYS sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-CASHDISCOUNT1PERCENT sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-CASHDISCOUNT2PERCENT sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PROCMTHUBINCOTERMSCLASSFCTN sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PROCMTHUBINCOTERMSLOCATION1 sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-FOLLOWONDOCHDRX sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PURCHASINGDOCUMENT sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PURCHASINGDOCUMENTX sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-COMPANYCODE sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-CREATIONDATE sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-CREATEDBYUSER sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PROCMTHUBSUPPLIER sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PROCMTHUBPURCHASINGORG sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PROCMTHUBPURCHASINGGROUP sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-LANGUAGE sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PROCMTHUBDOCUMENTCURRENCY sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PROCMTHUBPAYMENTTERMS sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-CASHDISCOUNT1DAYS sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-CASHDISCOUNT2DAYS sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-CASHDISCOUNTDAYS sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-CASHDISCOUNT1PERCENT sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-CASHDISCOUNT2PERCENT sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PROCMTHUBINCOTERMSCLASSFCTN sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PROCMTHUBINCOTERMSLOCATION1 sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-FOLLOWONDOCITMSET sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-FOLLOWONDOCITMSETX sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-FOLLOWONDOCSCHEDULELINESET sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-FOLLOWONDOCSCHEDULELINESETX sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-FOLLOWONDOCCONDITIONSET sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-FOLLOWONDOCCONDITIONSETX sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-FOLLOWONDOCADDRSET sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-FOLLOWONDOCADDRSETX sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-FOLLOWONDOCCONTROL sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PURCHASINGDOCUMENT sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PURCHASINGDOCISCONSISTENT sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PURCHASINGDOCISINCONSISTENT sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-PURCHASINGDOCUMENTISPARKED sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-FOLLOWONDOCMESSAGESET sy-vline 
WA_MMPUR_CENTRAL_SOURCING_STR-FOLLOWONDOCEXTNINCLUDE sy-vline      INTO ld_text SEPARATED BY SPACE.

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