ABAP Select data from SAP table DFPS_P1950 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DFPS_P1950 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 DFPS_P1950. 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 DFPS_P1950 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_DFPS_P1950 TYPE STANDARD TABLE OF DFPS_P1950,
      WA_DFPS_P1950 TYPE DFPS_P1950,
      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: <DFPS_P1950> TYPE DFPS_P1950.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DFPS_P1950.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DFPS_P1950
  INTO TABLE IT_DFPS_P1950.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFPS_P1950
*  INTO TABLE @DATA(IT_DFPS_P19502).
*--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_DFPS_P1950 INDEX 1 INTO DATA(WA_DFPS_P19502).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DFPS_P1950 ASSIGNING <DFPS_P1950>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFPS_P1950>-MANDT = 1.
<DFPS_P1950>-PLVAR = 1.
<DFPS_P1950>-OTYPE = 1.
<DFPS_P1950>-OBJID = 1.
<DFPS_P1950>-INFTY = 1.

ENDLOOP.

LOOP AT IT_DFPS_P1950 INTO WA_DFPS_P1950.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFPS_P1950-SUBTY, sy-vline,
  WA_DFPS_P1950-ISTAT, sy-vline,
  WA_DFPS_P1950-PRIOX, sy-vline,
  WA_DFPS_P1950-BEGDA, sy-vline,
  WA_DFPS_P1950-ENDDA, sy-vline,
  WA_DFPS_P1950-VARYF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFPS_P1950 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_DFPS_P1950 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_DFPS_P1950 INTO WA_DFPS_P1950.


*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_DFPS_P1950_STR, 
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
ISTAT TYPE STRING,
PRIOX TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
REASN TYPE STRING,
HISTO TYPE STRING,
ITXNR TYPE STRING,
OWNER_NATION TYPE STRING,
SERVICE_ID TYPE STRING,
FORCE_LEVEL TYPE STRING,
LEVEL_GROUP TYPE STRING,
BRANCH_ID TYPE STRING,
CASE_TYPE TYPE STRING,
AGENCY TYPE STRING,
SERVICE_TYPE TYPE STRING,
BRANCHS_ID TYPE STRING,
SC TYPE STRING,
UIC TYPE STRING,
REF_OBJID TYPE STRING,
ACTIVITY_CODE TYPE STRING,
SRVC_TYPE TYPE STRING,
PRIORITY_KEY TYPE STRING,
SENSITIVITY_KEY TYPE STRING,
DFS_UIC TYPE STRING,
UIC_PARAGRAPH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFPS_P1950_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_DFPS_P1950_STR-MANDT sy-vline 
WA_DFPS_P1950_STR-PLVAR sy-vline 
WA_DFPS_P1950_STR-OTYPE sy-vline 
WA_DFPS_P1950_STR-OBJID sy-vline 
WA_DFPS_P1950_STR-INFTY sy-vline 
WA_DFPS_P1950_STR-SUBTY sy-vline 
WA_DFPS_P1950_STR-ISTAT sy-vline 
WA_DFPS_P1950_STR-PRIOX sy-vline 
WA_DFPS_P1950_STR-BEGDA sy-vline 
WA_DFPS_P1950_STR-ENDDA sy-vline 
WA_DFPS_P1950_STR-VARYF sy-vline 
WA_DFPS_P1950_STR-SEQNR sy-vline 
WA_DFPS_P1950_STR-AEDTM sy-vline 
WA_DFPS_P1950_STR-UNAME sy-vline 
WA_DFPS_P1950_STR-REASN sy-vline 
WA_DFPS_P1950_STR-HISTO sy-vline 
WA_DFPS_P1950_STR-ITXNR sy-vline 
WA_DFPS_P1950_STR-OWNER_NATION sy-vline 
WA_DFPS_P1950_STR-SERVICE_ID sy-vline 
WA_DFPS_P1950_STR-FORCE_LEVEL sy-vline 
WA_DFPS_P1950_STR-LEVEL_GROUP sy-vline 
WA_DFPS_P1950_STR-BRANCH_ID sy-vline 
WA_DFPS_P1950_STR-CASE_TYPE sy-vline 
WA_DFPS_P1950_STR-AGENCY sy-vline 
WA_DFPS_P1950_STR-SERVICE_TYPE sy-vline 
WA_DFPS_P1950_STR-BRANCHS_ID sy-vline 
WA_DFPS_P1950_STR-SC sy-vline 
WA_DFPS_P1950_STR-UIC sy-vline 
WA_DFPS_P1950_STR-REF_OBJID sy-vline 
WA_DFPS_P1950_STR-ACTIVITY_CODE sy-vline 
WA_DFPS_P1950_STR-SRVC_TYPE sy-vline 
WA_DFPS_P1950_STR-PRIORITY_KEY sy-vline 
WA_DFPS_P1950_STR-SENSITIVITY_KEY sy-vline 
WA_DFPS_P1950_STR-DFS_UIC sy-vline 
WA_DFPS_P1950_STR-UIC_PARAGRAPH sy-vline      INTO ld_text SEPARATED BY SPACE.

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