ABAP Select data from SAP table PS3340 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP PS3340 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 PS3340. 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 PS3340 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_PS3340 TYPE STANDARD TABLE OF PS3340,
      WA_PS3340 TYPE PS3340,
      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: <PS3340> TYPE PS3340.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PS3340.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PS3340
  INTO TABLE IT_PS3340.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PS3340
*  INTO TABLE @DATA(IT_PS33402).
*--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_PS3340 INDEX 1 INTO DATA(WA_PS33402).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PS3340 ASSIGNING <PS3340>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PS3340>-PERIO = 1.
<PS3340>-DENAT = 1.
<PS3340>-DEPER = 1.
<PS3340>-DETYP = 1.
<PS3340>-ABKRS = 1.

ENDLOOP.

LOOP AT IT_PS3340 INTO WA_PS3340.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PS3340-ACTIO, sy-vline,
  WA_PS3340-STRCT, sy-vline,
  WA_PS3340-MOLGA, sy-vline,
  WA_PS3340-CISRN, sy-vline,
  WA_PS3340-CIERN, sy-vline,
  WA_PS3340-CICDE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PS3340 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_PS3340 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_PS3340 INTO WA_PS3340.


*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_PS3340_STR, 
PERIO TYPE STRING,
DENAT TYPE STRING,
DEPER TYPE STRING,
DETYP TYPE STRING,
ABKRS TYPE STRING,
ACTIO TYPE STRING,
STRCT TYPE STRING,
MOLGA TYPE STRING,
CISRN TYPE STRING,
CIERN TYPE STRING,
CICDE TYPE STRING,
FCONT TYPE STRING,
CDAT1 TYPE STRING,
CDAT2 TYPE STRING,
CDAT3 TYPE STRING,
CDAT4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PS3340_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_PS3340_STR-PERIO sy-vline 
WA_PS3340_STR-DENAT sy-vline 
WA_PS3340_STR-DEPER sy-vline 
WA_PS3340_STR-DETYP sy-vline 
WA_PS3340_STR-ABKRS sy-vline 
WA_PS3340_STR-ACTIO sy-vline 
WA_PS3340_STR-STRCT sy-vline 
WA_PS3340_STR-MOLGA sy-vline 
WA_PS3340_STR-CISRN sy-vline 
WA_PS3340_STR-CIERN sy-vline 
WA_PS3340_STR-CICDE sy-vline 
WA_PS3340_STR-FCONT sy-vline 
WA_PS3340_STR-CDAT1 sy-vline 
WA_PS3340_STR-CDAT2 sy-vline 
WA_PS3340_STR-CDAT3 sy-vline 
WA_PS3340_STR-CDAT4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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