ABAP Select data from SAP table PMMSCHAGHIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMMSCHAGHIST
*  INTO TABLE @DATA(IT_PMMSCHAGHIST2).
*--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_PMMSCHAGHIST INDEX 1 INTO DATA(WA_PMMSCHAGHIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMMSCHAGHIST>-MANDT = 1.
<PMMSCHAGHIST>-SCHEDULINGAGREEMENT = 1.
<PMMSCHAGHIST>-SCHEDULINGAGREEMENTITEM = 1.
<PMMSCHAGHIST>-ACCOUNTASSIGNMENTNUMBER = 1.
<PMMSCHAGHIST>-PURCHASEORDERTRANSACTIONTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMMSCHAGHIST-MATERIALDOCUMENT, sy-vline,
  WA_PMMSCHAGHIST-MATERIALDOCUMENTITEM, sy-vline,
  WA_PMMSCHAGHIST-MATERIALDOCUMENTYEAR, sy-vline,
  WA_PMMSCHAGHIST-POSTINGDATE, sy-vline,
  WA_PMMSCHAGHIST-SUPPLIER, sy-vline,
  WA_PMMSCHAGHIST-PURCHASINGORGANIZATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMMSCHAGHIST 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_PMMSCHAGHIST 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_PMMSCHAGHIST INTO WA_PMMSCHAGHIST.


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

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

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

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

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

*Conversion exit CUNIT, internal->external for field ORDERQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PMMSCHAGHIST-ORDERQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMMSCHAGHIST-ORDERQUANTITYUNIT.
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_PMMSCHAGHIST_STR, 
MANDT TYPE STRING,
SCHEDULINGAGREEMENT TYPE STRING,
SCHEDULINGAGREEMENTITEM TYPE STRING,
ACCOUNTASSIGNMENTNUMBER TYPE STRING,
PURCHASEORDERTRANSACTIONTYPE TYPE STRING,
MATERIALDOCUMENT TYPE STRING,
MATERIALDOCUMENTITEM TYPE STRING,
MATERIALDOCUMENTYEAR TYPE STRING,
POSTINGDATE TYPE STRING,
SUPPLIER TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
COMPANYCODE TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
PURCHASINGDOCUMENTTYPE TYPE STRING,
PLANT TYPE STRING,
STORAGELOCATION TYPE STRING,
MATERIALGROUP TYPE STRING,
MATERIAL TYPE STRING,
NETPRICEAMOUNT TYPE STRING,
NETPRICEQUANTITY TYPE STRING,
ORDERPRICEUNITTOORDERUNITNMRTR TYPE STRING,
ORDPRICEUNITTOORDERUNITDNMNTR TYPE STRING,
PRODUCTTYPE TYPE STRING,
MATERIALTYPE TYPE STRING,
ORDERQUANTITYUNIT TYPE STRING,
ACCOUNTASSIGNMENTCATEGORY TYPE STRING,
MULTIPLEACCTASSGMTDISTRIBUTION TYPE STRING,
PARTIALINVOICEDISTRIBUTION TYPE STRING,
PURCHASINGDOCUMENTORDERDATE TYPE STRING,
CURRENCY TYPE STRING,
GOODSRECEIPTQUANTITY TYPE STRING,
INVOICERECEIPTQTY TYPE STRING,
INVOICEAMOUNTINDOCCURRENCY TYPE STRING,
GOODSRECEIPTGOODSAMTINDOCCURR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMMSCHAGHIST_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_PMMSCHAGHIST_STR-MANDT sy-vline 
WA_PMMSCHAGHIST_STR-SCHEDULINGAGREEMENT sy-vline 
WA_PMMSCHAGHIST_STR-SCHEDULINGAGREEMENTITEM sy-vline 
WA_PMMSCHAGHIST_STR-ACCOUNTASSIGNMENTNUMBER sy-vline 
WA_PMMSCHAGHIST_STR-PURCHASEORDERTRANSACTIONTYPE sy-vline 
WA_PMMSCHAGHIST_STR-MATERIALDOCUMENT sy-vline 
WA_PMMSCHAGHIST_STR-MATERIALDOCUMENTITEM sy-vline 
WA_PMMSCHAGHIST_STR-MATERIALDOCUMENTYEAR sy-vline 
WA_PMMSCHAGHIST_STR-POSTINGDATE sy-vline 
WA_PMMSCHAGHIST_STR-SUPPLIER sy-vline 
WA_PMMSCHAGHIST_STR-PURCHASINGORGANIZATION sy-vline 
WA_PMMSCHAGHIST_STR-PURCHASINGGROUP sy-vline 
WA_PMMSCHAGHIST_STR-COMPANYCODE sy-vline 
WA_PMMSCHAGHIST_STR-DOCUMENTCURRENCY sy-vline 
WA_PMMSCHAGHIST_STR-VALIDITYSTARTDATE sy-vline 
WA_PMMSCHAGHIST_STR-VALIDITYENDDATE sy-vline 
WA_PMMSCHAGHIST_STR-PURCHASINGDOCUMENTTYPE sy-vline 
WA_PMMSCHAGHIST_STR-PLANT sy-vline 
WA_PMMSCHAGHIST_STR-STORAGELOCATION sy-vline 
WA_PMMSCHAGHIST_STR-MATERIALGROUP sy-vline 
WA_PMMSCHAGHIST_STR-MATERIAL sy-vline 
WA_PMMSCHAGHIST_STR-NETPRICEAMOUNT sy-vline 
WA_PMMSCHAGHIST_STR-NETPRICEQUANTITY sy-vline 
WA_PMMSCHAGHIST_STR-ORDERPRICEUNITTOORDERUNITNMRTR sy-vline 
WA_PMMSCHAGHIST_STR-ORDPRICEUNITTOORDERUNITDNMNTR sy-vline 
WA_PMMSCHAGHIST_STR-PRODUCTTYPE sy-vline 
WA_PMMSCHAGHIST_STR-MATERIALTYPE sy-vline 
WA_PMMSCHAGHIST_STR-ORDERQUANTITYUNIT sy-vline 
WA_PMMSCHAGHIST_STR-ACCOUNTASSIGNMENTCATEGORY sy-vline 
WA_PMMSCHAGHIST_STR-MULTIPLEACCTASSGMTDISTRIBUTION sy-vline 
WA_PMMSCHAGHIST_STR-PARTIALINVOICEDISTRIBUTION sy-vline 
WA_PMMSCHAGHIST_STR-PURCHASINGDOCUMENTORDERDATE sy-vline 
WA_PMMSCHAGHIST_STR-CURRENCY sy-vline 
WA_PMMSCHAGHIST_STR-GOODSRECEIPTQUANTITY sy-vline 
WA_PMMSCHAGHIST_STR-INVOICERECEIPTQTY sy-vline 
WA_PMMSCHAGHIST_STR-INVOICEAMOUNTINDOCCURRENCY sy-vline 
WA_PMMSCHAGHIST_STR-GOODSRECEIPTGOODSAMTINDOCCURR sy-vline      INTO ld_text SEPARATED BY SPACE.

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