ABAP Select data from SAP table P9990 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P9990 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 P9990. 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 P9990 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_P9990 TYPE STANDARD TABLE OF P9990,
      WA_P9990 TYPE P9990,
      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: <P9990> TYPE P9990.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P9990.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P9990
  INTO TABLE IT_P9990.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P9990
*  INTO TABLE @DATA(IT_P99902).
*--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_P9990 INDEX 1 INTO DATA(WA_P99902).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P9990 ASSIGNING <P9990>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P9990>-PERNR = 1.
<P9990>-INFTY = 1.
<P9990>-SUBTY = 1.
<P9990>-OBJPS = 1.
<P9990>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_P9990 INTO WA_P9990.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P9990-ENDDA, sy-vline,
  WA_P9990-BEGDA, sy-vline,
  WA_P9990-SEQNR, sy-vline,
  WA_P9990-AEDTM, sy-vline,
  WA_P9990-UNAME, sy-vline,
  WA_P9990-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P9990 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_P9990 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_P9990 INTO WA_P9990.


*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_P9990_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,
PY_SEQNR TYPE STRING,
MOLGA TYPE STRING,
ABKRS TYPE STRING,
WAERS TYPE STRING,
FPPER TYPE STRING,
PAYTY TYPE STRING,
PAYID TYPE STRING,
PAY_DATE TYPE STRING,
ZZTEL0114B TYPE STRING,
ZZTEL0115B TYPE STRING,
ZZTEL0116B TYPE STRING,
ZZTEL0117B TYPE STRING,
ZZTEL0286B TYPE STRING,
ZZTEL0287B TYPE STRING,
ZZTEL0288B TYPE STRING,
ZZTEL0289B TYPE STRING,
ZZTEL0290A TYPE STRING,
ZZTEL0291A TYPE STRING,
ZZTEL0292A TYPE STRING,
ZZTEL0293A TYPE STRING,
ZZTEL0118B TYPE STRING,
ZZTEL0119B TYPE STRING,
ZZTEL0120B TYPE STRING,
ZZTEL0121B TYPE STRING,
ZZTEL0122B TYPE STRING,
ZZTEL0123B TYPE STRING,
ZZTEL0124B TYPE STRING,
ZZTEL0125B TYPE STRING,
ZZTEL0126A TYPE STRING,
ZZTEL0127A TYPE STRING,
ZZTEL0128A TYPE STRING,
ZZTEL0129A TYPE STRING,
ZZTEL0130B TYPE STRING,
ZZTEL0131B TYPE STRING,
ZZTEL0132B TYPE STRING,
ZZTEL0133B TYPE STRING,
ZZTEL0134A TYPE STRING,
ZZTEL0135A TYPE STRING,
ZZTEL0136A TYPE STRING,
ZZTEL0137A TYPE STRING,
ZZTEL0138B TYPE STRING,
ZZTEL0139B TYPE STRING,
ZZTEL0140B TYPE STRING,
ZZTEL0141B TYPE STRING,
ZZTEL0142B TYPE STRING,
ZZTEL0143B TYPE STRING,
ZZTEL0144B TYPE STRING,
ZZTEL0145B TYPE STRING,
ZZTEL0146A TYPE STRING,
ZZTEL0147A TYPE STRING,
ZZTEL0148A TYPE STRING,
ZZTEL0149A TYPE STRING,
ZZTEL0150B TYPE STRING,
ZZTEL0151B TYPE STRING,
ZZTEL0152B TYPE STRING,
ZZTEL0153B TYPE STRING,
ZZTEL0154B TYPE STRING,
ZZTEL0155B TYPE STRING,
ZZTEL0156B TYPE STRING,
ZZTEL0157B TYPE STRING,
ZZTEL0158A TYPE STRING,
ZZTEL0159A TYPE STRING,
ZZTEL0160A TYPE STRING,
ZZTEL0161A TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P9990_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_P9990_STR-PERNR sy-vline 
WA_P9990_STR-INFTY sy-vline 
WA_P9990_STR-SUBTY sy-vline 
WA_P9990_STR-OBJPS sy-vline 
WA_P9990_STR-SPRPS sy-vline 
WA_P9990_STR-ENDDA sy-vline 
WA_P9990_STR-BEGDA sy-vline 
WA_P9990_STR-SEQNR sy-vline 
WA_P9990_STR-AEDTM sy-vline 
WA_P9990_STR-UNAME sy-vline 
WA_P9990_STR-HISTO sy-vline 
WA_P9990_STR-ITXEX sy-vline 
WA_P9990_STR-REFEX sy-vline 
WA_P9990_STR-ORDEX sy-vline 
WA_P9990_STR-ITBLD sy-vline 
WA_P9990_STR-PREAS sy-vline 
WA_P9990_STR-FLAG1 sy-vline 
WA_P9990_STR-FLAG2 sy-vline 
WA_P9990_STR-FLAG3 sy-vline 
WA_P9990_STR-FLAG4 sy-vline 
WA_P9990_STR-RESE1 sy-vline 
WA_P9990_STR-RESE2 sy-vline 
WA_P9990_STR-GRPVL sy-vline 
WA_P9990_STR-PY_SEQNR sy-vline 
WA_P9990_STR-MOLGA sy-vline 
WA_P9990_STR-ABKRS sy-vline 
WA_P9990_STR-WAERS sy-vline 
WA_P9990_STR-FPPER sy-vline 
WA_P9990_STR-PAYTY sy-vline 
WA_P9990_STR-PAYID sy-vline 
WA_P9990_STR-PAY_DATE sy-vline 
WA_P9990_STR-ZZTEL0114B sy-vline 
WA_P9990_STR-ZZTEL0115B sy-vline 
WA_P9990_STR-ZZTEL0116B sy-vline 
WA_P9990_STR-ZZTEL0117B sy-vline 
WA_P9990_STR-ZZTEL0286B sy-vline 
WA_P9990_STR-ZZTEL0287B sy-vline 
WA_P9990_STR-ZZTEL0288B sy-vline 
WA_P9990_STR-ZZTEL0289B sy-vline 
WA_P9990_STR-ZZTEL0290A sy-vline 
WA_P9990_STR-ZZTEL0291A sy-vline 
WA_P9990_STR-ZZTEL0292A sy-vline 
WA_P9990_STR-ZZTEL0293A sy-vline 
WA_P9990_STR-ZZTEL0118B sy-vline 
WA_P9990_STR-ZZTEL0119B sy-vline 
WA_P9990_STR-ZZTEL0120B sy-vline 
WA_P9990_STR-ZZTEL0121B sy-vline 
WA_P9990_STR-ZZTEL0122B sy-vline 
WA_P9990_STR-ZZTEL0123B sy-vline 
WA_P9990_STR-ZZTEL0124B sy-vline 
WA_P9990_STR-ZZTEL0125B sy-vline 
WA_P9990_STR-ZZTEL0126A sy-vline 
WA_P9990_STR-ZZTEL0127A sy-vline 
WA_P9990_STR-ZZTEL0128A sy-vline 
WA_P9990_STR-ZZTEL0129A sy-vline 
WA_P9990_STR-ZZTEL0130B sy-vline 
WA_P9990_STR-ZZTEL0131B sy-vline 
WA_P9990_STR-ZZTEL0132B sy-vline 
WA_P9990_STR-ZZTEL0133B sy-vline 
WA_P9990_STR-ZZTEL0134A sy-vline 
WA_P9990_STR-ZZTEL0135A sy-vline 
WA_P9990_STR-ZZTEL0136A sy-vline 
WA_P9990_STR-ZZTEL0137A sy-vline 
WA_P9990_STR-ZZTEL0138B sy-vline 
WA_P9990_STR-ZZTEL0139B sy-vline 
WA_P9990_STR-ZZTEL0140B sy-vline 
WA_P9990_STR-ZZTEL0141B sy-vline 
WA_P9990_STR-ZZTEL0142B sy-vline 
WA_P9990_STR-ZZTEL0143B sy-vline 
WA_P9990_STR-ZZTEL0144B sy-vline 
WA_P9990_STR-ZZTEL0145B sy-vline 
WA_P9990_STR-ZZTEL0146A sy-vline 
WA_P9990_STR-ZZTEL0147A sy-vline 
WA_P9990_STR-ZZTEL0148A sy-vline 
WA_P9990_STR-ZZTEL0149A sy-vline 
WA_P9990_STR-ZZTEL0150B sy-vline 
WA_P9990_STR-ZZTEL0151B sy-vline 
WA_P9990_STR-ZZTEL0152B sy-vline 
WA_P9990_STR-ZZTEL0153B sy-vline 
WA_P9990_STR-ZZTEL0154B sy-vline 
WA_P9990_STR-ZZTEL0155B sy-vline 
WA_P9990_STR-ZZTEL0156B sy-vline 
WA_P9990_STR-ZZTEL0157B sy-vline 
WA_P9990_STR-ZZTEL0158A sy-vline 
WA_P9990_STR-ZZTEL0159A sy-vline 
WA_P9990_STR-ZZTEL0160A sy-vline 
WA_P9990_STR-ZZTEL0161A sy-vline      INTO ld_text SEPARATED BY SPACE.

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