ABAP Select data from SAP table PT1213 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PT1213 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 PT1213. 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 PT1213 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_PT1213 TYPE STANDARD TABLE OF PT1213,
      WA_PT1213 TYPE PT1213,
      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: <PT1213> TYPE PT1213.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PT1213.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PT1213
  INTO TABLE IT_PT1213.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PT1213
*  INTO TABLE @DATA(IT_PT12132).
*--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_PT1213 INDEX 1 INTO DATA(WA_PT12132).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PT1213 ASSIGNING <PT1213>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PT1213>-DATAFLOW = 1.
<PT1213>-ELEMENT = 1.
<PT1213>-TAB_INDEX = 1.
<PT1213>-REFTYPE = 1.
<PT1213>-REFOBJTYPE = 1.

ENDLOOP.

LOOP AT IT_PT1213 INTO WA_PT1213.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PT1213-REFSTRUCT, sy-vline,
  WA_PT1213-REFFIELD, sy-vline,
  WA_PT1213-ATTRTYPE, sy-vline,
  WA_PT1213-ELEMLENGTH, sy-vline,
  WA_PT1213-TYPE, sy-vline,
  WA_PT1213-EXPR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PT1213 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_PT1213 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_PT1213 INTO WA_PT1213.


*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_PT1213_STR, 
DATAFLOW TYPE STRING,
ELEMENT TYPE STRING,
TAB_INDEX TYPE STRING,
REFTYPE TYPE STRING,
REFOBJTYPE TYPE STRING,
REFSTRUCT TYPE STRING,
REFFIELD TYPE STRING,
ATTRTYPE TYPE STRING,
ELEMLENGTH TYPE STRING,
TYPE TYPE STRING,
EXPR TYPE STRING,
FLENG TYPE STRING,
SOURCETYPE TYPE STRING,
TARGETTYPE TYPE STRING,
TARGETEXPR TYPE STRING,
OPERATION TYPE STRING,
OPCLASS TYPE STRING,
SKIPSNULL TYPE STRING,
SKIPSINIT TYPE STRING,
NOVERWRITE TYPE STRING,
SKIPERROR TYPE STRING,
MOVE_CORR TYPE STRING,
TRANSTYPE TYPE STRING,
TRANSBASE TYPE STRING,
TRANSEXT TYPE STRING,
TRANSCATID TYPE STRING,
TRANSASYNC TYPE STRING,
TRANSDIALG TYPE STRING,
TRANSLOG TYPE STRING,
TRANSDEBUG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PT1213_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_PT1213_STR-DATAFLOW sy-vline 
WA_PT1213_STR-ELEMENT sy-vline 
WA_PT1213_STR-TAB_INDEX sy-vline 
WA_PT1213_STR-REFTYPE sy-vline 
WA_PT1213_STR-REFOBJTYPE sy-vline 
WA_PT1213_STR-REFSTRUCT sy-vline 
WA_PT1213_STR-REFFIELD sy-vline 
WA_PT1213_STR-ATTRTYPE sy-vline 
WA_PT1213_STR-ELEMLENGTH sy-vline 
WA_PT1213_STR-TYPE sy-vline 
WA_PT1213_STR-EXPR sy-vline 
WA_PT1213_STR-FLENG sy-vline 
WA_PT1213_STR-SOURCETYPE sy-vline 
WA_PT1213_STR-TARGETTYPE sy-vline 
WA_PT1213_STR-TARGETEXPR sy-vline 
WA_PT1213_STR-OPERATION sy-vline 
WA_PT1213_STR-OPCLASS sy-vline 
WA_PT1213_STR-SKIPSNULL sy-vline 
WA_PT1213_STR-SKIPSINIT sy-vline 
WA_PT1213_STR-NOVERWRITE sy-vline 
WA_PT1213_STR-SKIPERROR sy-vline 
WA_PT1213_STR-MOVE_CORR sy-vline 
WA_PT1213_STR-TRANSTYPE sy-vline 
WA_PT1213_STR-TRANSBASE sy-vline 
WA_PT1213_STR-TRANSEXT sy-vline 
WA_PT1213_STR-TRANSCATID sy-vline 
WA_PT1213_STR-TRANSASYNC sy-vline 
WA_PT1213_STR-TRANSDIALG sy-vline 
WA_PT1213_STR-TRANSLOG sy-vline 
WA_PT1213_STR-TRANSDEBUG sy-vline      INTO ld_text SEPARATED BY SPACE.

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