ABAP Select data from SAP table PMTVLPERIODS into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PMTVLPERIODS 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 PMTVLPERIODS. 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 PMTVLPERIODS 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_PMTVLPERIODS TYPE STANDARD TABLE OF PMTVLPERIODS,
      WA_PMTVLPERIODS TYPE PMTVLPERIODS,
      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: <PMTVLPERIODS> TYPE PMTVLPERIODS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMTVLPERIODS
*  INTO TABLE @DATA(IT_PMTVLPERIODS2).
*--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_PMTVLPERIODS INDEX 1 INTO DATA(WA_PMTVLPERIODS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMTVLPERIODS>-MANDT = 1.
<PMTVLPERIODS>-COSTESTIMATE = 1.
<PMTVLPERIODS>-FISCALYEAR = 1.
<PMTVLPERIODS>-FISCALPERIOD = 1.
<PMTVLPERIODS>-LEDGERVALUATIONCURRENCYROLE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMTVLPERIODS-VALUATIONAREA, sy-vline,
  WA_PMTVLPERIODS-LEDGER, sy-vline,
  WA_PMTVLPERIODS-CURRENCYROLE, sy-vline,
  WA_PMTVLPERIODS-MATERIALPRICEUNITQTY, sy-vline,
  WA_PMTVLPERIODS-MOVINGAVERAGEPRICE, sy-vline,
  WA_PMTVLPERIODS-INVTRYVALNSPECIALSTOCKTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMTVLPERIODS 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_PMTVLPERIODS 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_PMTVLPERIODS INTO WA_PMTVLPERIODS.


*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 GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PMTVLPERIODS-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMTVLPERIODS-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PMTVLPERIODS-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMTVLPERIODS-MATERIAL.
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_PMTVLPERIODS_STR, 
MANDT TYPE STRING,
COSTESTIMATE TYPE STRING,
FISCALYEAR TYPE STRING,
FISCALPERIOD TYPE STRING,
LEDGERVALUATIONCURRENCYROLE TYPE STRING,
VALUATIONAREA TYPE STRING,
LEDGER TYPE STRING,
CURRENCYROLE TYPE STRING,
MATERIALPRICEUNITQTY TYPE STRING,
MOVINGAVERAGEPRICE TYPE STRING,
INVTRYVALNSPECIALSTOCKTYPE TYPE STRING,
INVENTORYSPECIALSTOCKVALNTYPE TYPE STRING,
MATERIALPRICECONTROL TYPE STRING,
STANDARDPRICE TYPE STRING,
PRICEDETERMINATIONCONTROL TYPE STRING,
MATERIALPRICE TYPE STRING,
FUTUREPRICE TYPE STRING,
FUTUREPLANNEDPRICE TYPE STRING,
FUTUREPRICEVALIDITYSTARTDATE TYPE STRING,
TOTALVLTDSTOCKQUANTITY TYPE STRING,
TOTALVALUATEDSTOCKAMOUNT TYPE STRING,
BASEUNIT TYPE STRING,
VALUATIONQUANTITYUNIT TYPE STRING,
COMPANYCODE TYPE STRING,
MATERIAL TYPE STRING,
INVENTORYVALUATIONTYPE TYPE STRING,
INVENTORYVALUATIONCATEGORY TYPE STRING,
PLANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMTVLPERIODS_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_PMTVLPERIODS_STR-MANDT sy-vline 
WA_PMTVLPERIODS_STR-COSTESTIMATE sy-vline 
WA_PMTVLPERIODS_STR-FISCALYEAR sy-vline 
WA_PMTVLPERIODS_STR-FISCALPERIOD sy-vline 
WA_PMTVLPERIODS_STR-LEDGERVALUATIONCURRENCYROLE sy-vline 
WA_PMTVLPERIODS_STR-VALUATIONAREA sy-vline 
WA_PMTVLPERIODS_STR-LEDGER sy-vline 
WA_PMTVLPERIODS_STR-CURRENCYROLE sy-vline 
WA_PMTVLPERIODS_STR-MATERIALPRICEUNITQTY sy-vline 
WA_PMTVLPERIODS_STR-MOVINGAVERAGEPRICE sy-vline 
WA_PMTVLPERIODS_STR-INVTRYVALNSPECIALSTOCKTYPE sy-vline 
WA_PMTVLPERIODS_STR-INVENTORYSPECIALSTOCKVALNTYPE sy-vline 
WA_PMTVLPERIODS_STR-MATERIALPRICECONTROL sy-vline 
WA_PMTVLPERIODS_STR-STANDARDPRICE sy-vline 
WA_PMTVLPERIODS_STR-PRICEDETERMINATIONCONTROL sy-vline 
WA_PMTVLPERIODS_STR-MATERIALPRICE sy-vline 
WA_PMTVLPERIODS_STR-FUTUREPRICE sy-vline 
WA_PMTVLPERIODS_STR-FUTUREPLANNEDPRICE sy-vline 
WA_PMTVLPERIODS_STR-FUTUREPRICEVALIDITYSTARTDATE sy-vline 
WA_PMTVLPERIODS_STR-TOTALVLTDSTOCKQUANTITY sy-vline 
WA_PMTVLPERIODS_STR-TOTALVALUATEDSTOCKAMOUNT sy-vline 
WA_PMTVLPERIODS_STR-BASEUNIT sy-vline 
WA_PMTVLPERIODS_STR-VALUATIONQUANTITYUNIT sy-vline 
WA_PMTVLPERIODS_STR-COMPANYCODE sy-vline 
WA_PMTVLPERIODS_STR-MATERIAL sy-vline 
WA_PMTVLPERIODS_STR-INVENTORYVALUATIONTYPE sy-vline 
WA_PMTVLPERIODS_STR-INVENTORYVALUATIONCATEGORY sy-vline 
WA_PMTVLPERIODS_STR-PLANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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