ABAP Select data from SAP table MMPUR_SSP_REQN_ACCTASSIGNMT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMPUR_SSP_REQN_ACCTASSIGNMT 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_SSP_REQN_ACCTASSIGNMT. 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_SSP_REQN_ACCTASSIGNMT 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_SSP_REQN_ACCTASSIGNMT TYPE STANDARD TABLE OF MMPUR_SSP_REQN_ACCTASSIGNMT,
      WA_MMPUR_SSP_REQN_ACCTASSIGNMT TYPE MMPUR_SSP_REQN_ACCTASSIGNMT,
      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_SSP_REQN_ACCTASSIGNMT> TYPE MMPUR_SSP_REQN_ACCTASSIGNMT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_SSP_REQN_ACCTASSIGNMT
*  INTO TABLE @DATA(IT_MMPUR_SSP_REQN_ACCTASSIGNMT2).
*--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_SSP_REQN_ACCTASSIGNMT INDEX 1 INTO DATA(WA_MMPUR_SSP_REQN_ACCTASSIGNMT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_SSP_REQN_ACCTASSIGNMT>-PURCHASEREQUISITION = 1.
<MMPUR_SSP_REQN_ACCTASSIGNMT>-PURCHASEREQUISITIONITEM = 1.
<MMPUR_SSP_REQN_ACCTASSIGNMT>-ACCOUNTASSIGNMENTCATEGORY = 1.
<MMPUR_SSP_REQN_ACCTASSIGNMT>-COSTCENTER = 1.
<MMPUR_SSP_REQN_ACCTASSIGNMT>-GLACCOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_SSP_REQN_ACCTASSIGNMT-UNLOADINGPOINTNAME, sy-vline,
  WA_MMPUR_SSP_REQN_ACCTASSIGNMT-GOODSRECIPIENTNAME, sy-vline,
  WA_MMPUR_SSP_REQN_ACCTASSIGNMT-CONTROLLINGAREA, sy-vline,
  WA_MMPUR_SSP_REQN_ACCTASSIGNMT-WBSELEMENT, sy-vline,
  WA_MMPUR_SSP_REQN_ACCTASSIGNMT-PROJECTNETWORK, sy-vline,
  WA_MMPUR_SSP_REQN_ACCTASSIGNMT-MASTERFIXEDASSET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_SSP_REQN_ACCTASSIGNMT 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_SSP_REQN_ACCTASSIGNMT 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_SSP_REQN_ACCTASSIGNMT INTO WA_MMPUR_SSP_REQN_ACCTASSIGNMT.


*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_MMPUR_SSP_REQN_ACCTASSIGNMT-PURCHASEREQUISITION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_SSP_REQN_ACCTASSIGNMT-PURCHASEREQUISITION.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field ORDERID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_SSP_REQN_ACCTASSIGNMT-ORDERID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_SSP_REQN_ACCTASSIGNMT-ORDERID.
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_SSP_REQN_ACCTASSIGNMT_STR, 
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
ACCOUNTASSIGNMENTCATEGORY TYPE STRING,
COSTCENTER TYPE STRING,
GLACCOUNT TYPE STRING,
UNLOADINGPOINTNAME TYPE STRING,
GOODSRECIPIENTNAME TYPE STRING,
CONTROLLINGAREA TYPE STRING,
WBSELEMENT TYPE STRING,
PROJECTNETWORK TYPE STRING,
MASTERFIXEDASSET TYPE STRING,
FIXEDASSET TYPE STRING,
ORDERID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_SSP_REQN_ACCTASSIGNMT_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_SSP_REQN_ACCTASSIGNMT_STR-PURCHASEREQUISITION sy-vline 
WA_MMPUR_SSP_REQN_ACCTASSIGNMT_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_MMPUR_SSP_REQN_ACCTASSIGNMT_STR-ACCOUNTASSIGNMENTCATEGORY sy-vline 
WA_MMPUR_SSP_REQN_ACCTASSIGNMT_STR-COSTCENTER sy-vline 
WA_MMPUR_SSP_REQN_ACCTASSIGNMT_STR-GLACCOUNT sy-vline 
WA_MMPUR_SSP_REQN_ACCTASSIGNMT_STR-UNLOADINGPOINTNAME sy-vline 
WA_MMPUR_SSP_REQN_ACCTASSIGNMT_STR-GOODSRECIPIENTNAME sy-vline 
WA_MMPUR_SSP_REQN_ACCTASSIGNMT_STR-CONTROLLINGAREA sy-vline 
WA_MMPUR_SSP_REQN_ACCTASSIGNMT_STR-WBSELEMENT sy-vline 
WA_MMPUR_SSP_REQN_ACCTASSIGNMT_STR-PROJECTNETWORK sy-vline 
WA_MMPUR_SSP_REQN_ACCTASSIGNMT_STR-MASTERFIXEDASSET sy-vline 
WA_MMPUR_SSP_REQN_ACCTASSIGNMT_STR-FIXEDASSET sy-vline 
WA_MMPUR_SSP_REQN_ACCTASSIGNMT_STR-ORDERID sy-vline      INTO ld_text SEPARATED BY SPACE.

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