ABAP Select data from SAP table CMATINVVAP into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMATINVVAP
*  INTO TABLE @DATA(IT_CMATINVVAP2).
*--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_CMATINVVAP INDEX 1 INTO DATA(WA_CMATINVVAP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMATINVVAP>-MANDT = 1.
<CMATINVVAP>-CREATEDBYUSER = 1.
<CMATINVVAP>-COSTESTIMATE = 1.
<CMATINVVAP>-LEDGERVALUATIONCURRENCYROLE = 1.
<CMATINVVAP>-MATERIAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMATINVVAP-MATERIALNAME, sy-vline,
  WA_CMATINVVAP-PLANT, sy-vline,
  WA_CMATINVVAP-PLANTNAME, sy-vline,
  WA_CMATINVVAP-LEGALCURRENCYROLE, sy-vline,
  WA_CMATINVVAP-LEDGER, sy-vline,
  WA_CMATINVVAP-LEDGERNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMATINVVAP 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_CMATINVVAP 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_CMATINVVAP INTO WA_CMATINVVAP.


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

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

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

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

*Conversion exit GJAHR, internal->external for field MATERIALLEDGERDOCUMENTYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CMATINVVAP-MATERIALLEDGERDOCUMENTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMATINVVAP-MATERIALLEDGERDOCUMENTYEAR.
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_CMATINVVAP_STR, 
MANDT TYPE STRING,
CREATEDBYUSER TYPE STRING,
COSTESTIMATE TYPE STRING,
LEDGERVALUATIONCURRENCYROLE TYPE STRING,
MATERIAL TYPE STRING,
MATERIALNAME TYPE STRING,
PLANT TYPE STRING,
PLANTNAME TYPE STRING,
LEGALCURRENCYROLE TYPE STRING,
LEDGER TYPE STRING,
LEDGERNAME TYPE STRING,
ACCTGVALNVWSUBVIEWCOMBINEDNAME TYPE STRING,
LEGALCURRENCYROLENAME TYPE STRING,
NEWINVENTORYPRICE TYPE STRING,
CURRENCY TYPE STRING,
NEWMATERIALPRICEUNITQTY TYPE STRING,
VALUATIONQUANTITYUNIT TYPE STRING,
INVENTORYVALUATIONTYPE TYPE STRING,
MATERIALSTATUSTEXT TYPE STRING,
SYSTEMMESSAGETYPE TYPE STRING,
MATERIALLEDGERDOCUMENT TYPE STRING,
MATERIALLEDGERDOCUMENTYEAR TYPE STRING,
KEYDATE TYPE STRING,
COMPANYCODE TYPE STRING,
COMPANYCODENAME TYPE STRING,
DOCUMENTHEADERTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMATINVVAP_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_CMATINVVAP_STR-MANDT sy-vline 
WA_CMATINVVAP_STR-CREATEDBYUSER sy-vline 
WA_CMATINVVAP_STR-COSTESTIMATE sy-vline 
WA_CMATINVVAP_STR-LEDGERVALUATIONCURRENCYROLE sy-vline 
WA_CMATINVVAP_STR-MATERIAL sy-vline 
WA_CMATINVVAP_STR-MATERIALNAME sy-vline 
WA_CMATINVVAP_STR-PLANT sy-vline 
WA_CMATINVVAP_STR-PLANTNAME sy-vline 
WA_CMATINVVAP_STR-LEGALCURRENCYROLE sy-vline 
WA_CMATINVVAP_STR-LEDGER sy-vline 
WA_CMATINVVAP_STR-LEDGERNAME sy-vline 
WA_CMATINVVAP_STR-ACCTGVALNVWSUBVIEWCOMBINEDNAME sy-vline 
WA_CMATINVVAP_STR-LEGALCURRENCYROLENAME sy-vline 
WA_CMATINVVAP_STR-NEWINVENTORYPRICE sy-vline 
WA_CMATINVVAP_STR-CURRENCY sy-vline 
WA_CMATINVVAP_STR-NEWMATERIALPRICEUNITQTY sy-vline 
WA_CMATINVVAP_STR-VALUATIONQUANTITYUNIT sy-vline 
WA_CMATINVVAP_STR-INVENTORYVALUATIONTYPE sy-vline 
WA_CMATINVVAP_STR-MATERIALSTATUSTEXT sy-vline 
WA_CMATINVVAP_STR-SYSTEMMESSAGETYPE sy-vline 
WA_CMATINVVAP_STR-MATERIALLEDGERDOCUMENT sy-vline 
WA_CMATINVVAP_STR-MATERIALLEDGERDOCUMENTYEAR sy-vline 
WA_CMATINVVAP_STR-KEYDATE sy-vline 
WA_CMATINVVAP_STR-COMPANYCODE sy-vline 
WA_CMATINVVAP_STR-COMPANYCODENAME sy-vline 
WA_CMATINVVAP_STR-DOCUMENTHEADERTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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