ABAP Select data from SAP table PS3261 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PS3261 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 PS3261. 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 PS3261 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_PS3261 TYPE STANDARD TABLE OF PS3261,
      WA_PS3261 TYPE PS3261,
      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: <PS3261> TYPE PS3261.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PS3261.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PS3261
  INTO TABLE IT_PS3261.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PS3261
*  INTO TABLE @DATA(IT_PS32612).
*--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_PS3261 INDEX 1 INTO DATA(WA_PS32612).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PS3261 ASSIGNING <PS3261>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PS3261>-ID = 1.
<PS3261>-CTTYP = 1.
<PS3261>-ORGEH = 1.
<PS3261>-KIFMOD = 1.
<PS3261>-D_BEERK = 1.

ENDLOOP.

LOOP AT IT_PS3261 INTO WA_PS3261.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PS3261-D_SZAMF, sy-vline,
  WA_PS3261-D_LEZAR, sy-vline,
  WA_PS3261-PREV_ID, sy-vline,
  WA_PS3261-UTOLSO_SORSZ, sy-vline,
  WA_PS3261-N_ORASZAM, sy-vline,
  WA_PS3261-ZEINH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PS3261 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_PS3261 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_PS3261 INTO WA_PS3261.


*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_PS3261_STR, 
ID TYPE STRING,
CTTYP TYPE STRING,
ORGEH TYPE STRING,
KIFMOD TYPE STRING,
D_BEERK TYPE STRING,
D_SZAMF TYPE STRING,
D_LEZAR TYPE STRING,
PREV_ID TYPE STRING,
UTOLSO_SORSZ TYPE STRING,
N_ORASZAM TYPE STRING,
ZEINH TYPE STRING,
W_ORADIJ TYPE STRING,
W_MUNKADIJ TYPE STRING,
W_JOGDIJ TYPE STRING,
W_M_KOLTSEG TYPE STRING,
W_J_KOLTSEG TYPE STRING,
WAERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PS3261_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_PS3261_STR-ID sy-vline 
WA_PS3261_STR-CTTYP sy-vline 
WA_PS3261_STR-ORGEH sy-vline 
WA_PS3261_STR-KIFMOD sy-vline 
WA_PS3261_STR-D_BEERK sy-vline 
WA_PS3261_STR-D_SZAMF sy-vline 
WA_PS3261_STR-D_LEZAR sy-vline 
WA_PS3261_STR-PREV_ID sy-vline 
WA_PS3261_STR-UTOLSO_SORSZ sy-vline 
WA_PS3261_STR-N_ORASZAM sy-vline 
WA_PS3261_STR-ZEINH sy-vline 
WA_PS3261_STR-W_ORADIJ sy-vline 
WA_PS3261_STR-W_MUNKADIJ sy-vline 
WA_PS3261_STR-W_JOGDIJ sy-vline 
WA_PS3261_STR-W_M_KOLTSEG sy-vline 
WA_PS3261_STR-W_J_KOLTSEG sy-vline 
WA_PS3261_STR-WAERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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