ABAP Select data from SAP table PS3364 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PS3364 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 PS3364. 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 PS3364 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_PS3364 TYPE STANDARD TABLE OF PS3364,
      WA_PS3364 TYPE PS3364,
      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: <PS3364> TYPE PS3364.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PS3364.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PS3364
  INTO TABLE IT_PS3364.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PS3364
*  INTO TABLE @DATA(IT_PS33642).
*--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_PS3364 INDEX 1 INTO DATA(WA_PS33642).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PS3364 ASSIGNING <PS3364>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PS3364>-SINTP = 1.
<PS3364>-LGART = 1.
<PS3364>-BETRG = 1.
<PS3364>-WAERS = 1.
<PS3364>-ANZHL = 1.

ENDLOOP.

LOOP AT IT_PS3364 INTO WA_PS3364.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PS3364-ZEINH, sy-vline,
  WA_PS3364-PAYRL, sy-vline,
  WA_PS3364-PAYDT, sy-vline,
  WA_PS3364-APRDT, sy-vline,
  WA_PS3364-ACCYR, sy-vline,
  WA_PS3364-AWDNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PS3364 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_PS3364 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_PS3364 INTO WA_PS3364.


*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 GJAHR, internal->external for field TAXYR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PS3364-TAXYR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PS3364-TAXYR.
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_PS3364_STR, 
SINTP TYPE STRING,
LGART TYPE STRING,
BETRG TYPE STRING,
WAERS TYPE STRING,
ANZHL TYPE STRING,
ZEINH TYPE STRING,
PAYRL TYPE STRING,
PAYDT TYPE STRING,
APRDT TYPE STRING,
ACCYR TYPE STRING,
AWDNR TYPE STRING,
PDPEX TYPE STRING,
TAXYR TYPE STRING,
PBEGD TYPE STRING,
PENDD TYPE STRING,
SUBDT TYPE STRING,
OWAMT TYPE STRING,
AWAMT TYPE STRING,
ERCON TYPE STRING,
ERINT TYPE STRING,
EECON TYPE STRING,
EEINT TYPE STRING,
EEDAT TYPE STRING,
ERDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PS3364_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_PS3364_STR-SINTP sy-vline 
WA_PS3364_STR-LGART sy-vline 
WA_PS3364_STR-BETRG sy-vline 
WA_PS3364_STR-WAERS sy-vline 
WA_PS3364_STR-ANZHL sy-vline 
WA_PS3364_STR-ZEINH sy-vline 
WA_PS3364_STR-PAYRL sy-vline 
WA_PS3364_STR-PAYDT sy-vline 
WA_PS3364_STR-APRDT sy-vline 
WA_PS3364_STR-ACCYR sy-vline 
WA_PS3364_STR-AWDNR sy-vline 
WA_PS3364_STR-PDPEX sy-vline 
WA_PS3364_STR-TAXYR sy-vline 
WA_PS3364_STR-PBEGD sy-vline 
WA_PS3364_STR-PENDD sy-vline 
WA_PS3364_STR-SUBDT sy-vline 
WA_PS3364_STR-OWAMT sy-vline 
WA_PS3364_STR-AWAMT sy-vline 
WA_PS3364_STR-ERCON sy-vline 
WA_PS3364_STR-ERINT sy-vline 
WA_PS3364_STR-EECON sy-vline 
WA_PS3364_STR-EEINT sy-vline 
WA_PS3364_STR-EEDAT sy-vline 
WA_PS3364_STR-ERDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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