ABAP Select data from SAP table PMLMHDR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMLMHDR
*  INTO TABLE @DATA(IT_PMLMHDR2).
*--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_PMLMHDR INDEX 1 INTO DATA(WA_PMLMHDR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMLMHDR>-MANDT = 1.
<PMLMHDR>-COSTESTIMATE = 1.
<PMLMHDR>-MLAST = 1.
<PMLMHDR>-XABRECH = 1.
<PMLMHDR>-ABRECHDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMLMHDR-XABRERR, sy-vline,
  WA_PMLMHDR-ABRECHUHR, sy-vline,
  WA_PMLMHDR-MATERIAL, sy-vline,
  WA_PMLMHDR-VALUATIONAREA, sy-vline,
  WA_PMLMHDR-INVENTORYVALUATIONTYPE, sy-vline,
  WA_PMLMHDR-KZBWS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMLMHDR 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_PMLMHDR 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_PMLMHDR INTO WA_PMLMHDR.


*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_PMLMHDR-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMLMHDR-MATERIAL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PMLMHDR-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMLMHDR-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PMLMHDR-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMLMHDR-SUPPLIER.
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_PMLMHDR_STR, 
MANDT TYPE STRING,
COSTESTIMATE TYPE STRING,
MLAST TYPE STRING,
XABRECH TYPE STRING,
ABRECHDAT TYPE STRING,
XABRERR TYPE STRING,
ABRECHUHR TYPE STRING,
MATERIAL TYPE STRING,
VALUATIONAREA TYPE STRING,
INVENTORYVALUATIONTYPE TYPE STRING,
KZBWS TYPE STRING,
XOBEW TYPE STRING,
SOBKZ TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
PSPNR TYPE STRING,
SUPPLIER TYPE STRING,
AEXTERRIND TYPE STRING,
MATDOC_AEXTERRIND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMLMHDR_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_PMLMHDR_STR-MANDT sy-vline 
WA_PMLMHDR_STR-COSTESTIMATE sy-vline 
WA_PMLMHDR_STR-MLAST sy-vline 
WA_PMLMHDR_STR-XABRECH sy-vline 
WA_PMLMHDR_STR-ABRECHDAT sy-vline 
WA_PMLMHDR_STR-XABRERR sy-vline 
WA_PMLMHDR_STR-ABRECHUHR sy-vline 
WA_PMLMHDR_STR-MATERIAL sy-vline 
WA_PMLMHDR_STR-VALUATIONAREA sy-vline 
WA_PMLMHDR_STR-INVENTORYVALUATIONTYPE sy-vline 
WA_PMLMHDR_STR-KZBWS sy-vline 
WA_PMLMHDR_STR-XOBEW sy-vline 
WA_PMLMHDR_STR-SOBKZ sy-vline 
WA_PMLMHDR_STR-VBELN sy-vline 
WA_PMLMHDR_STR-POSNR sy-vline 
WA_PMLMHDR_STR-PSPNR sy-vline 
WA_PMLMHDR_STR-SUPPLIER sy-vline 
WA_PMLMHDR_STR-AEXTERRIND sy-vline 
WA_PMLMHDR_STR-MATDOC_AEXTERRIND sy-vline      INTO ld_text SEPARATED BY SPACE.

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