ABAP Select data from SAP table PMSDY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMSDY
*  INTO TABLE @DATA(IT_PMSDY2).
*--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_PMSDY INDEX 1 INTO DATA(WA_PMSDY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMSDY>-PLVAR = 1.
<PMSDY>-PTEXT = 1.
<PMSDY>-OTYPE = 1.
<PMSDY>-OTEXT = 1.
<PMSDY>-OBJID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMSDY-SHORT, sy-vline,
  WA_PMSDY-ROOT, sy-vline,
  WA_PMSDY-WAY, sy-vline,
  WA_PMSDY-SVECT, sy-vline,
  WA_PMSDY-RSIGN, sy-vline,
  WA_PMSDY-RELAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMSDY 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_PMSDY 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_PMSDY INTO WA_PMSDY.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PMSDY_STR, 
PLVAR TYPE STRING,
PTEXT TYPE STRING,
OTYPE TYPE STRING,
OTEXT TYPE STRING,
OBJID TYPE STRING,
SHORT TYPE STRING,
ROOT TYPE STRING,
WAY TYPE STRING,
SVECT TYPE STRING,
RSIGN TYPE STRING,
RELAT TYPE STRING,
RTEXT TYPE STRING,
PRIOX TYPE STRING,
NEWOTYPE TYPE STRING,
NEWOTEXT TYPE STRING,
NEWOBJID TYPE STRING,
NEWSHORT TYPE STRING,
NEWSTEXT TYPE STRING,
IOBEGDA TYPE STRING,
IVBEGDA TYPE STRING,
IVENDDA TYPE STRING,
MVBEGDA TYPE STRING,
MVENDDA TYPE STRING,
TOGDATE TYPE STRING,
CSBEGDA TYPE STRING,
CSENDDA TYPE STRING,
PMSDY01 TYPE STRING,
PMSDY02 TYPE STRING,
PMSDY03 TYPE STRING,
PMSDY04 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMSDY_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_PMSDY_STR-PLVAR sy-vline 
WA_PMSDY_STR-PTEXT sy-vline 
WA_PMSDY_STR-OTYPE sy-vline 
WA_PMSDY_STR-OTEXT sy-vline 
WA_PMSDY_STR-OBJID sy-vline 
WA_PMSDY_STR-SHORT sy-vline 
WA_PMSDY_STR-ROOT sy-vline 
WA_PMSDY_STR-WAY sy-vline 
WA_PMSDY_STR-SVECT sy-vline 
WA_PMSDY_STR-RSIGN sy-vline 
WA_PMSDY_STR-RELAT sy-vline 
WA_PMSDY_STR-RTEXT sy-vline 
WA_PMSDY_STR-PRIOX sy-vline 
WA_PMSDY_STR-NEWOTYPE sy-vline 
WA_PMSDY_STR-NEWOTEXT sy-vline 
WA_PMSDY_STR-NEWOBJID sy-vline 
WA_PMSDY_STR-NEWSHORT sy-vline 
WA_PMSDY_STR-NEWSTEXT sy-vline 
WA_PMSDY_STR-IOBEGDA sy-vline 
WA_PMSDY_STR-IVBEGDA sy-vline 
WA_PMSDY_STR-IVENDDA sy-vline 
WA_PMSDY_STR-MVBEGDA sy-vline 
WA_PMSDY_STR-MVENDDA sy-vline 
WA_PMSDY_STR-TOGDATE sy-vline 
WA_PMSDY_STR-CSBEGDA sy-vline 
WA_PMSDY_STR-CSENDDA sy-vline 
WA_PMSDY_STR-PMSDY01 sy-vline 
WA_PMSDY_STR-PMSDY02 sy-vline 
WA_PMSDY_STR-PMSDY03 sy-vline 
WA_PMSDY_STR-PMSDY04 sy-vline      INTO ld_text SEPARATED BY SPACE.

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