ABAP Select data from SAP table /ISDFPS/POSITION_CREATE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ISDFPS/POSITION_CREATE 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 /ISDFPS/POSITION_CREATE. 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 /ISDFPS/POSITION_CREATE 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_/ISDFPS/POSITION_CREATE TYPE STANDARD TABLE OF /ISDFPS/POSITION_CREATE,
      WA_/ISDFPS/POSITION_CREATE TYPE /ISDFPS/POSITION_CREATE,
      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: </ISDFPS/POSITION_CREATE> TYPE /ISDFPS/POSITION_CREATE.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ISDFPS/POSITION_CREATE
  INTO TABLE IT_/ISDFPS/POSITION_CREATE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ISDFPS/POSITION_CREATE
*  INTO TABLE @DATA(IT_/ISDFPS/POSITION_CREATE2).
*--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_/ISDFPS/POSITION_CREATE INDEX 1 INTO DATA(WA_/ISDFPS/POSITION_CREATE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ISDFPS/POSITION_CREATE ASSIGNING </ISDFPS/POSITION_CREATE>.

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

ENDLOOP.

LOOP AT IT_/ISDFPS/POSITION_CREATE INTO WA_/ISDFPS/POSITION_CREATE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ISDFPS/POSITION_CREATE-SUBTY, sy-vline,
  WA_/ISDFPS/POSITION_CREATE-ISTAT, sy-vline,
  WA_/ISDFPS/POSITION_CREATE-PRIOX, sy-vline,
  WA_/ISDFPS/POSITION_CREATE-BEGDA, sy-vline,
  WA_/ISDFPS/POSITION_CREATE-ENDDA, sy-vline,
  WA_/ISDFPS/POSITION_CREATE-LANGU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ISDFPS/POSITION_CREATE 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_/ISDFPS/POSITION_CREATE 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_/ISDFPS/POSITION_CREATE INTO WA_/ISDFPS/POSITION_CREATE.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/POSITION_CREATE-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/POSITION_CREATE-LANGU.
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_/ISDFPS/POSITION_CREATE_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,
LANGU TYPE STRING,
DUMMY TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
REASN TYPE STRING,
HISTO TYPE STRING,
ITXNR TYPE STRING,
SHORT TYPE STRING,
STEXT TYPE STRING,
GDATE TYPE STRING,
MANAGER_FLAG TYPE STRING,
DESCR_JOB_HROBJID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ISDFPS/POSITION_CREATE_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_/ISDFPS/POSITION_CREATE_STR-MANDT sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-PLVAR sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-OTYPE sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-OBJID sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-INFTY sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-SUBTY sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-ISTAT sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-PRIOX sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-BEGDA sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-ENDDA sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-LANGU sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-DUMMY sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-SEQNR sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-AEDTM sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-UNAME sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-REASN sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-HISTO sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-ITXNR sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-SHORT sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-STEXT sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-GDATE sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-MANAGER_FLAG sy-vline 
WA_/ISDFPS/POSITION_CREATE_STR-DESCR_JOB_HROBJID sy-vline      INTO ld_text SEPARATED BY SPACE.

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