ABAP Select data from SAP table PDCMT2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PDCMT2 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 PDCMT2. 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 PDCMT2 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_PDCMT2 TYPE STANDARD TABLE OF PDCMT2,
      WA_PDCMT2 TYPE PDCMT2,
      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: <PDCMT2> TYPE PDCMT2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PDCMT2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PDCMT2
  INTO TABLE IT_PDCMT2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PDCMT2
*  INTO TABLE @DATA(IT_PDCMT22).
*--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_PDCMT2 INDEX 1 INTO DATA(WA_PDCMT22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PDCMT2 ASSIGNING <PDCMT2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PDCMT2>-LDATE = 1.
<PDCMT2>-LTIME = 1.
<PDCMT2>-ERDAT = 1.
<PDCMT2>-ERTIM = 1.
<PDCMT2>-ORIGF = 1.

ENDLOOP.

LOOP AT IT_PDCMT2 INTO WA_PDCMT2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PDCMT2-SATZA, sy-vline,
  WA_PDCMT2-DALLF, sy-vline,
  WA_PDCMT2-TERID, sy-vline,
  WA_PDCMT2-ABWGR, sy-vline,
  WA_PDCMT2-EXLGA, sy-vline,
  WA_PDCMT2-ZEINH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PDCMT2 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_PDCMT2 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_PDCMT2 INTO WA_PDCMT2.


*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 DALLF, internal->external for field DALLF
CALL FUNCTION 'CONVERSION_EXIT_DALLF_OUTPUT'
  EXPORTING
    input =                      WA_PDCMT2-DALLF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDCMT2-DALLF.
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_PDCMT2_STR, 
LDATE TYPE STRING,
LTIME TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
ORIGF TYPE STRING,
SATZA TYPE STRING,
DALLF TYPE STRING,
TERID TYPE STRING,
ABWGR TYPE STRING,
EXLGA TYPE STRING,
ZEINH TYPE STRING,
HRAZL TYPE STRING,
HRBET TYPE STRING,
UNAME TYPE STRING,
AEDTM TYPE STRING,
STOKZ TYPE STRING,
REFEX TYPE STRING,
ORDEX TYPE STRING,
INDEU TYPE STRING,
PDSNR TYPE STRING,
OTYPE TYPE STRING,
PLANS TYPE STRING,
PDC_USRUP TYPE STRING,
USER2 TYPE STRING,
ABWEX TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
PRAKN TYPE STRING,
PRAKZ TYPE STRING,
AUFKZ TYPE STRING,
BWGRL TYPE STRING,
WAERS TYPE STRING,
I_SATZA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PDCMT2_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_PDCMT2_STR-LDATE sy-vline 
WA_PDCMT2_STR-LTIME sy-vline 
WA_PDCMT2_STR-ERDAT sy-vline 
WA_PDCMT2_STR-ERTIM sy-vline 
WA_PDCMT2_STR-ORIGF sy-vline 
WA_PDCMT2_STR-SATZA sy-vline 
WA_PDCMT2_STR-DALLF sy-vline 
WA_PDCMT2_STR-TERID sy-vline 
WA_PDCMT2_STR-ABWGR sy-vline 
WA_PDCMT2_STR-EXLGA sy-vline 
WA_PDCMT2_STR-ZEINH sy-vline 
WA_PDCMT2_STR-HRAZL sy-vline 
WA_PDCMT2_STR-HRBET sy-vline 
WA_PDCMT2_STR-UNAME sy-vline 
WA_PDCMT2_STR-AEDTM sy-vline 
WA_PDCMT2_STR-STOKZ sy-vline 
WA_PDCMT2_STR-REFEX sy-vline 
WA_PDCMT2_STR-ORDEX sy-vline 
WA_PDCMT2_STR-INDEU sy-vline 
WA_PDCMT2_STR-PDSNR sy-vline 
WA_PDCMT2_STR-OTYPE sy-vline 
WA_PDCMT2_STR-PLANS sy-vline 
WA_PDCMT2_STR-PDC_USRUP sy-vline 
WA_PDCMT2_STR-USER2 sy-vline 
WA_PDCMT2_STR-ABWEX sy-vline 
WA_PDCMT2_STR-TRFGR sy-vline 
WA_PDCMT2_STR-TRFST sy-vline 
WA_PDCMT2_STR-PRAKN sy-vline 
WA_PDCMT2_STR-PRAKZ sy-vline 
WA_PDCMT2_STR-AUFKZ sy-vline 
WA_PDCMT2_STR-BWGRL sy-vline 
WA_PDCMT2_STR-WAERS sy-vline 
WA_PDCMT2_STR-I_SATZA sy-vline      INTO ld_text SEPARATED BY SPACE.

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