ABAP Select data from SAP table P0718 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P0718 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 P0718. 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 P0718 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_P0718 TYPE STANDARD TABLE OF P0718,
      WA_P0718 TYPE P0718,
      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: <P0718> TYPE P0718.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P0718.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P0718
  INTO TABLE IT_P0718.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P0718
*  INTO TABLE @DATA(IT_P07182).
*--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_P0718 INDEX 1 INTO DATA(WA_P07182).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P0718 ASSIGNING <P0718>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P0718>-PERNR = 1.
<P0718>-INFTY = 1.
<P0718>-SUBTY = 1.
<P0718>-OBJPS = 1.
<P0718>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_P0718 INTO WA_P0718.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P0718-ENDDA, sy-vline,
  WA_P0718-BEGDA, sy-vline,
  WA_P0718-SEQNR, sy-vline,
  WA_P0718-AEDTM, sy-vline,
  WA_P0718-UNAME, sy-vline,
  WA_P0718-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P0718 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_P0718 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_P0718 INTO WA_P0718.


*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_P0718_STR, 
PERNR TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
SPRPS TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
HISTO TYPE STRING,
ITXEX TYPE STRING,
REFEX TYPE STRING,
ORDEX TYPE STRING,
ITBLD TYPE STRING,
PREAS TYPE STRING,
FLAG1 TYPE STRING,
FLAG2 TYPE STRING,
FLAG3 TYPE STRING,
FLAG4 TYPE STRING,
RESE1 TYPE STRING,
RESE2 TYPE STRING,
GRPVL TYPE STRING,
BAREA TYPE STRING,
RQTYP TYPE STRING,
RQOPT TYPE STRING,
RQDAT TYPE STRING,
RQSTA TYPE STRING,
RQPYD TYPE STRING,
APPDA TYPE STRING,
RQAMT TYPE STRING,
RQCUR TYPE STRING,
RDPTS TYPE STRING,
RBAMT TYPE STRING,
RDAMT TYPE STRING,
RBPTS TYPE STRING,
CURRE TYPE STRING,
EXAMT TYPE STRING,
EXPTS TYPE STRING,
RQDTY TYPE STRING,
RQDID TYPE STRING,
RDPUR TYPE STRING,
RDBEG TYPE STRING,
RDEND TYPE STRING,
RDSTA TYPE STRING,
RDASU TYPE STRING,
RDBSU TYPE STRING,
RDLSU TYPE STRING,
REFER TYPE STRING,
RDESY TYPE STRING,
RDESP TYPE STRING,
RDEPN TYPE STRING,
RDRNP TYPE STRING,
RDRNR TYPE STRING,
RDRRS TYPE STRING,
RDRES TYPE STRING,
RDRCN TYPE STRING,
RDRIA TYPE STRING,
RDRCU TYPE STRING,
RDGNG TYPE STRING,
RDMPD TYPE STRING,
RDMCD TYPE STRING,
RDLPR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P0718_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_P0718_STR-PERNR sy-vline 
WA_P0718_STR-INFTY sy-vline 
WA_P0718_STR-SUBTY sy-vline 
WA_P0718_STR-OBJPS sy-vline 
WA_P0718_STR-SPRPS sy-vline 
WA_P0718_STR-ENDDA sy-vline 
WA_P0718_STR-BEGDA sy-vline 
WA_P0718_STR-SEQNR sy-vline 
WA_P0718_STR-AEDTM sy-vline 
WA_P0718_STR-UNAME sy-vline 
WA_P0718_STR-HISTO sy-vline 
WA_P0718_STR-ITXEX sy-vline 
WA_P0718_STR-REFEX sy-vline 
WA_P0718_STR-ORDEX sy-vline 
WA_P0718_STR-ITBLD sy-vline 
WA_P0718_STR-PREAS sy-vline 
WA_P0718_STR-FLAG1 sy-vline 
WA_P0718_STR-FLAG2 sy-vline 
WA_P0718_STR-FLAG3 sy-vline 
WA_P0718_STR-FLAG4 sy-vline 
WA_P0718_STR-RESE1 sy-vline 
WA_P0718_STR-RESE2 sy-vline 
WA_P0718_STR-GRPVL sy-vline 
WA_P0718_STR-BAREA sy-vline 
WA_P0718_STR-RQTYP sy-vline 
WA_P0718_STR-RQOPT sy-vline 
WA_P0718_STR-RQDAT sy-vline 
WA_P0718_STR-RQSTA sy-vline 
WA_P0718_STR-RQPYD sy-vline 
WA_P0718_STR-APPDA sy-vline 
WA_P0718_STR-RQAMT sy-vline 
WA_P0718_STR-RQCUR sy-vline 
WA_P0718_STR-RDPTS sy-vline 
WA_P0718_STR-RBAMT sy-vline 
WA_P0718_STR-RDAMT sy-vline 
WA_P0718_STR-RBPTS sy-vline 
WA_P0718_STR-CURRE sy-vline 
WA_P0718_STR-EXAMT sy-vline 
WA_P0718_STR-EXPTS sy-vline 
WA_P0718_STR-RQDTY sy-vline 
WA_P0718_STR-RQDID sy-vline 
WA_P0718_STR-RDPUR sy-vline 
WA_P0718_STR-RDBEG sy-vline 
WA_P0718_STR-RDEND sy-vline 
WA_P0718_STR-RDSTA sy-vline 
WA_P0718_STR-RDASU sy-vline 
WA_P0718_STR-RDBSU sy-vline 
WA_P0718_STR-RDLSU sy-vline 
WA_P0718_STR-REFER sy-vline 
WA_P0718_STR-RDESY sy-vline 
WA_P0718_STR-RDESP sy-vline 
WA_P0718_STR-RDEPN sy-vline 
WA_P0718_STR-RDRNP sy-vline 
WA_P0718_STR-RDRNR sy-vline 
WA_P0718_STR-RDRRS sy-vline 
WA_P0718_STR-RDRES sy-vline 
WA_P0718_STR-RDRCN sy-vline 
WA_P0718_STR-RDRIA sy-vline 
WA_P0718_STR-RDRCU sy-vline 
WA_P0718_STR-RDGNG sy-vline 
WA_P0718_STR-RDMPD sy-vline 
WA_P0718_STR-RDMCD sy-vline 
WA_P0718_STR-RDLPR sy-vline      INTO ld_text SEPARATED BY SPACE.

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