ABAP Select data from SAP table IPURREQREPLMSG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPURREQREPLMSG
*  INTO TABLE @DATA(IT_IPURREQREPLMSG2).
*--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_IPURREQREPLMSG INDEX 1 INTO DATA(WA_IPURREQREPLMSG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPURREQREPLMSG>-MANDT = 1.
<IPURREQREPLMSG>-PURCHASEREQUISITION = 1.
<IPURREQREPLMSG>-PURCHASEREQUISITIONITEM = 1.
<IPURREQREPLMSG>-PURREQNMESSAGESEQUENCENUMBER = 1.
<IPURREQREPLMSG>-SYSTEMMESSAGETYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPURREQREPLMSG-SYSTEMMESSAGEIDENTIFICATION, sy-vline,
  WA_IPURREQREPLMSG-SYSTEMMESSAGENUMBER, sy-vline,
  WA_IPURREQREPLMSG-SYSTEMMESSAGEVARIABLE1, sy-vline,
  WA_IPURREQREPLMSG-SYSTEMMESSAGEVARIABLE2, sy-vline,
  WA_IPURREQREPLMSG-SYSTEMMESSAGEVARIABLE3, sy-vline,
  WA_IPURREQREPLMSG-SYSTEMMESSAGEVARIABLE4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPURREQREPLMSG 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_IPURREQREPLMSG 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_IPURREQREPLMSG INTO WA_IPURREQREPLMSG.


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

*Conversion exit ALPHA, internal->external for field PURREQNEXTERNALREFERENCE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPURREQREPLMSG-PURREQNEXTERNALREFERENCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPURREQREPLMSG-PURREQNEXTERNALREFERENCE.
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_IPURREQREPLMSG_STR, 
MANDT TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
PURREQNMESSAGESEQUENCENUMBER TYPE STRING,
SYSTEMMESSAGETYPE TYPE STRING,
SYSTEMMESSAGEIDENTIFICATION TYPE STRING,
SYSTEMMESSAGENUMBER TYPE STRING,
SYSTEMMESSAGEVARIABLE1 TYPE STRING,
SYSTEMMESSAGEVARIABLE2 TYPE STRING,
SYSTEMMESSAGEVARIABLE3 TYPE STRING,
SYSTEMMESSAGEVARIABLE4 TYPE STRING,
SYSTEMMESSAGETEXT TYPE STRING,
SYSTEMMESSAGECREATIONDATETIME TYPE STRING,
PURREQNEXTERNALREFERENCE TYPE STRING,
PURREQNITEMEXTERNALREFERENCE TYPE STRING,
PURREQNEXTERNALSYSTEMID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPURREQREPLMSG_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_IPURREQREPLMSG_STR-MANDT sy-vline 
WA_IPURREQREPLMSG_STR-PURCHASEREQUISITION sy-vline 
WA_IPURREQREPLMSG_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_IPURREQREPLMSG_STR-PURREQNMESSAGESEQUENCENUMBER sy-vline 
WA_IPURREQREPLMSG_STR-SYSTEMMESSAGETYPE sy-vline 
WA_IPURREQREPLMSG_STR-SYSTEMMESSAGEIDENTIFICATION sy-vline 
WA_IPURREQREPLMSG_STR-SYSTEMMESSAGENUMBER sy-vline 
WA_IPURREQREPLMSG_STR-SYSTEMMESSAGEVARIABLE1 sy-vline 
WA_IPURREQREPLMSG_STR-SYSTEMMESSAGEVARIABLE2 sy-vline 
WA_IPURREQREPLMSG_STR-SYSTEMMESSAGEVARIABLE3 sy-vline 
WA_IPURREQREPLMSG_STR-SYSTEMMESSAGEVARIABLE4 sy-vline 
WA_IPURREQREPLMSG_STR-SYSTEMMESSAGETEXT sy-vline 
WA_IPURREQREPLMSG_STR-SYSTEMMESSAGECREATIONDATETIME sy-vline 
WA_IPURREQREPLMSG_STR-PURREQNEXTERNALREFERENCE sy-vline 
WA_IPURREQREPLMSG_STR-PURREQNITEMEXTERNALREFERENCE sy-vline 
WA_IPURREQREPLMSG_STR-PURREQNEXTERNALSYSTEMID sy-vline      INTO ld_text SEPARATED BY SPACE.

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