ABAP Select data from SAP table PXAINFO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PXAINFO
*  INTO TABLE @DATA(IT_PXAINFO2).
*--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_PXAINFO INDEX 1 INTO DATA(WA_PXAINFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PXAINFO>-FILL = 1.
<PXAINFO>-FREE_SPACE = 1.
<PXAINFO>-GAPS = 1.
<PXAINFO>-SIZE = 1.
<PXAINFO>-CLIENTS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PXAINFO-COLL_RATIO, sy-vline,
  WA_PXAINFO-DIR_SIZE, sy-vline,
  WA_PXAINFO-HITS, sy-vline,
  WA_PXAINFO-LOCK_MAP, sy-vline,
  WA_PXAINFO-MODE, sy-vline,
  WA_PXAINFO-OBJ_LOADED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PXAINFO 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_PXAINFO 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_PXAINFO INTO WA_PXAINFO.


*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_PXAINFO_STR, 
FILL TYPE STRING,
FREE_SPACE TYPE STRING,
GAPS TYPE STRING,
SIZE TYPE STRING,
CLIENTS TYPE STRING,
COLL_RATIO TYPE STRING,
DIR_SIZE TYPE STRING,
HITS TYPE STRING,
LOCK_MAP TYPE STRING,
MODE TYPE STRING,
OBJ_LOADED TYPE STRING,
PRG_GEN TYPE STRING,
PRG_SWAP TYPE STRING,
REQUESTS TYPE STRING,
SEARCH_PA TYPE STRING,
SELF_TEST TYPE STRING,
SELF_TST_E TYPE STRING,
SYSTEM_ID TYPE STRING,
TOP_ENTRY TYPE STRING,
UP_DATE TYPE STRING,
UP_TIME TYPE STRING,
VERSION TYPE STRING,
DIR_SIZE_64 TYPE STRING,
TOP_ENTRY_64 TYPE STRING,
LOCK_MAP_64 TYPE STRING,
SIZE_64 TYPE STRING,
FILL_64 TYPE STRING,
GAPS_64 TYPE STRING,
FREE_SPACE_64 TYPE STRING,
OBJ_LOADED_64 TYPE STRING,
REQUESTS_64 TYPE STRING,
HITS_64 TYPE STRING,
SEARCH_PA_64 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PXAINFO_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_PXAINFO_STR-FILL sy-vline 
WA_PXAINFO_STR-FREE_SPACE sy-vline 
WA_PXAINFO_STR-GAPS sy-vline 
WA_PXAINFO_STR-SIZE sy-vline 
WA_PXAINFO_STR-CLIENTS sy-vline 
WA_PXAINFO_STR-COLL_RATIO sy-vline 
WA_PXAINFO_STR-DIR_SIZE sy-vline 
WA_PXAINFO_STR-HITS sy-vline 
WA_PXAINFO_STR-LOCK_MAP sy-vline 
WA_PXAINFO_STR-MODE sy-vline 
WA_PXAINFO_STR-OBJ_LOADED sy-vline 
WA_PXAINFO_STR-PRG_GEN sy-vline 
WA_PXAINFO_STR-PRG_SWAP sy-vline 
WA_PXAINFO_STR-REQUESTS sy-vline 
WA_PXAINFO_STR-SEARCH_PA sy-vline 
WA_PXAINFO_STR-SELF_TEST sy-vline 
WA_PXAINFO_STR-SELF_TST_E sy-vline 
WA_PXAINFO_STR-SYSTEM_ID sy-vline 
WA_PXAINFO_STR-TOP_ENTRY sy-vline 
WA_PXAINFO_STR-UP_DATE sy-vline 
WA_PXAINFO_STR-UP_TIME sy-vline 
WA_PXAINFO_STR-VERSION sy-vline 
WA_PXAINFO_STR-DIR_SIZE_64 sy-vline 
WA_PXAINFO_STR-TOP_ENTRY_64 sy-vline 
WA_PXAINFO_STR-LOCK_MAP_64 sy-vline 
WA_PXAINFO_STR-SIZE_64 sy-vline 
WA_PXAINFO_STR-FILL_64 sy-vline 
WA_PXAINFO_STR-GAPS_64 sy-vline 
WA_PXAINFO_STR-FREE_SPACE_64 sy-vline 
WA_PXAINFO_STR-OBJ_LOADED_64 sy-vline 
WA_PXAINFO_STR-REQUESTS_64 sy-vline 
WA_PXAINFO_STR-HITS_64 sy-vline 
WA_PXAINFO_STR-SEARCH_PA_64 sy-vline      INTO ld_text SEPARATED BY SPACE.

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