ABAP Select data from SAP table MMPUR_SES_HCM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMPUR_SES_HCM 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_SES_HCM. 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_SES_HCM 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_SES_HCM TYPE STANDARD TABLE OF MMPUR_SES_HCM,
      WA_MMPUR_SES_HCM TYPE MMPUR_SES_HCM,
      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_SES_HCM> TYPE MMPUR_SES_HCM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_SES_HCM
*  INTO TABLE @DATA(IT_MMPUR_SES_HCM2).
*--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_SES_HCM INDEX 1 INTO DATA(WA_MMPUR_SES_HCM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_SES_HCM>-SERVICEENTRYSHEETNAME = 1.
<MMPUR_SES_HCM>-APPROVALSTATUS = 1.
<MMPUR_SES_HCM>-RESPONSIBLEPERSON = 1.
<MMPUR_SES_HCM>-REFERENCEPURCHASEORDER = 1.
<MMPUR_SES_HCM>-SERVICEPERFORMER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_SES_HCM-PURCHASEORDERITEM, sy-vline,
  WA_MMPUR_SES_HCM-ISDELETED, sy-vline,
  WA_MMPUR_SES_HCM-SERVICE, sy-vline,
  WA_MMPUR_SES_HCM-SERVICEENTRYSHEETITEMDESC, sy-vline,
  WA_MMPUR_SES_HCM-CONFIRMEDQUANTITY, sy-vline,
  WA_MMPUR_SES_HCM-QUANTITYUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_SES_HCM 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_SES_HCM 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_SES_HCM INTO WA_MMPUR_SES_HCM.


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

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

*Conversion exit MATN1, internal->external for field SERVICE
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_SES_HCM-SERVICE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_SES_HCM-SERVICE.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ABPSP, internal->external for field WBSELEMENTINTERNALID
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_SES_HCM-WBSELEMENTINTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_SES_HCM-WBSELEMENTINTERNALID.
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_SES_HCM_STR, 
SERVICEENTRYSHEETNAME TYPE STRING,
APPROVALSTATUS TYPE STRING,
RESPONSIBLEPERSON TYPE STRING,
REFERENCEPURCHASEORDER TYPE STRING,
SERVICEPERFORMER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
ISDELETED TYPE STRING,
SERVICE TYPE STRING,
SERVICEENTRYSHEETITEMDESC TYPE STRING,
CONFIRMEDQUANTITY TYPE STRING,
QUANTITYUNIT TYPE STRING,
SERVICEPERFORMANCEDATE TYPE STRING,
ORIGINOBJECT TYPE STRING,
ORIGINOBJECTTYPE TYPE STRING,
ACCOUNTASSIGNMENTCATEGORY TYPE STRING,
COSTCENTER TYPE STRING,
GLACCOUNT TYPE STRING,
SALESORDER TYPE STRING,
SALESORDERITEM TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_SES_HCM_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_SES_HCM_STR-SERVICEENTRYSHEETNAME sy-vline 
WA_MMPUR_SES_HCM_STR-APPROVALSTATUS sy-vline 
WA_MMPUR_SES_HCM_STR-RESPONSIBLEPERSON sy-vline 
WA_MMPUR_SES_HCM_STR-REFERENCEPURCHASEORDER sy-vline 
WA_MMPUR_SES_HCM_STR-SERVICEPERFORMER sy-vline 
WA_MMPUR_SES_HCM_STR-PURCHASEORDERITEM sy-vline 
WA_MMPUR_SES_HCM_STR-ISDELETED sy-vline 
WA_MMPUR_SES_HCM_STR-SERVICE sy-vline 
WA_MMPUR_SES_HCM_STR-SERVICEENTRYSHEETITEMDESC sy-vline 
WA_MMPUR_SES_HCM_STR-CONFIRMEDQUANTITY sy-vline 
WA_MMPUR_SES_HCM_STR-QUANTITYUNIT sy-vline 
WA_MMPUR_SES_HCM_STR-SERVICEPERFORMANCEDATE sy-vline 
WA_MMPUR_SES_HCM_STR-ORIGINOBJECT sy-vline 
WA_MMPUR_SES_HCM_STR-ORIGINOBJECTTYPE sy-vline 
WA_MMPUR_SES_HCM_STR-ACCOUNTASSIGNMENTCATEGORY sy-vline 
WA_MMPUR_SES_HCM_STR-COSTCENTER sy-vline 
WA_MMPUR_SES_HCM_STR-GLACCOUNT sy-vline 
WA_MMPUR_SES_HCM_STR-SALESORDER sy-vline 
WA_MMPUR_SES_HCM_STR-SALESORDERITEM sy-vline 
WA_MMPUR_SES_HCM_STR-WBSELEMENTINTERNALID sy-vline      INTO ld_text SEPARATED BY SPACE.

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