ABAP Select data from SAP table PAYHX99 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PAYHX99 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 PAYHX99. 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 PAYHX99 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_PAYHX99 TYPE STANDARD TABLE OF PAYHX99,
      WA_PAYHX99 TYPE PAYHX99,
      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: <PAYHX99> TYPE PAYHX99.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PAYHX99.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PAYHX99
  INTO TABLE IT_PAYHX99.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PAYHX99
*  INTO TABLE @DATA(IT_PAYHX992).
*--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_PAYHX99 INDEX 1 INTO DATA(WA_PAYHX992).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PAYHX99 ASSIGNING <PAYHX99>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PAYHX99>-TEXT1 = 1.
<PAYHX99>-TEXT2 = 1.
<PAYHX99>-TEXT3 = 1.
<PAYHX99>-TEXT4 = 1.
<PAYHX99>-TEXT5 = 1.

ENDLOOP.

LOOP AT IT_PAYHX99 INTO WA_PAYHX99.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PAYHX99-TEXT6, sy-vline,
  WA_PAYHX99-TEXT7, sy-vline,
  WA_PAYHX99-TEXT8, sy-vline,
  WA_PAYHX99-TEXT9, sy-vline,
  WA_PAYHX99-TEXT10, sy-vline,
  WA_PAYHX99-TEXT11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PAYHX99 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_PAYHX99 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_PAYHX99 INTO WA_PAYHX99.


*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_PAYHX99_STR, 
TEXT1 TYPE STRING,
TEXT2 TYPE STRING,
TEXT3 TYPE STRING,
TEXT4 TYPE STRING,
TEXT5 TYPE STRING,
TEXT6 TYPE STRING,
TEXT7 TYPE STRING,
TEXT8 TYPE STRING,
TEXT9 TYPE STRING,
TEXT10 TYPE STRING,
TEXT11 TYPE STRING,
TEXT12 TYPE STRING,
TEXT13 TYPE STRING,
TEXT14 TYPE STRING,
TEXT15 TYPE STRING,
TEXT16 TYPE STRING,
TEXT17 TYPE STRING,
TEXT18 TYPE STRING,
TEXT19 TYPE STRING,
TEXTHR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PAYHX99_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_PAYHX99_STR-TEXT1 sy-vline 
WA_PAYHX99_STR-TEXT2 sy-vline 
WA_PAYHX99_STR-TEXT3 sy-vline 
WA_PAYHX99_STR-TEXT4 sy-vline 
WA_PAYHX99_STR-TEXT5 sy-vline 
WA_PAYHX99_STR-TEXT6 sy-vline 
WA_PAYHX99_STR-TEXT7 sy-vline 
WA_PAYHX99_STR-TEXT8 sy-vline 
WA_PAYHX99_STR-TEXT9 sy-vline 
WA_PAYHX99_STR-TEXT10 sy-vline 
WA_PAYHX99_STR-TEXT11 sy-vline 
WA_PAYHX99_STR-TEXT12 sy-vline 
WA_PAYHX99_STR-TEXT13 sy-vline 
WA_PAYHX99_STR-TEXT14 sy-vline 
WA_PAYHX99_STR-TEXT15 sy-vline 
WA_PAYHX99_STR-TEXT16 sy-vline 
WA_PAYHX99_STR-TEXT17 sy-vline 
WA_PAYHX99_STR-TEXT18 sy-vline 
WA_PAYHX99_STR-TEXT19 sy-vline 
WA_PAYHX99_STR-TEXTHR sy-vline      INTO ld_text SEPARATED BY SPACE.

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