ABAP Select data from SAP table /SAPAPO/ALERT_HP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/ALERT_HP 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 /SAPAPO/ALERT_HP. 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 /SAPAPO/ALERT_HP 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_/SAPAPO/ALERT_HP TYPE STANDARD TABLE OF /SAPAPO/ALERT_HP,
      WA_/SAPAPO/ALERT_HP TYPE /SAPAPO/ALERT_HP,
      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: </SAPAPO/ALERT_HP> TYPE /SAPAPO/ALERT_HP.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/ALERT_HP
  INTO TABLE IT_/SAPAPO/ALERT_HP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/ALERT_HP
*  INTO TABLE @DATA(IT_/SAPAPO/ALERT_HP2).
*--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_/SAPAPO/ALERT_HP INDEX 1 INTO DATA(WA_/SAPAPO/ALERT_HP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/ALERT_HP ASSIGNING </SAPAPO/ALERT_HP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/ALERT_HP>-MANDT = 1.
</SAPAPO/ALERT_HP>-AID = 1.
</SAPAPO/ALERT_HP>-PLVER = 1.
</SAPAPO/ALERT_HP>-AOT = 1.
</SAPAPO/ALERT_HP>-AT_ID = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/ALERT_HP INTO WA_/SAPAPO/ALERT_HP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/ALERT_HP-PEGID, sy-vline,
  WA_/SAPAPO/ALERT_HP-RESID, sy-vline,
  WA_/SAPAPO/ALERT_HP-LINE, sy-vline,
  WA_/SAPAPO/ALERT_HP-HEURID, sy-vline,
  WA_/SAPAPO/ALERT_HP-LOGNR, sy-vline,
  WA_/SAPAPO/ALERT_HP-PLSEC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/ALERT_HP 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_/SAPAPO/ALERT_HP 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_/SAPAPO/ALERT_HP INTO WA_/SAPAPO/ALERT_HP.


*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.

*Conversion exit VRSIO, internal->external for field PLVER
CALL FUNCTION 'CONVERSION_EXIT_VRSIO_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/ALERT_HP-PLVER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/ALERT_HP-PLVER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field VFROM
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/ALERT_HP-VFROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/ALERT_HP-VFROM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field VTO
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/ALERT_HP-VTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/ALERT_HP-VTO.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/SAPAPO/ALERT_HP_STR, 
MANDT TYPE STRING,
AID TYPE STRING,
PLVER TYPE STRING,
AOT TYPE STRING,
AT_ID TYPE STRING,
PEGID TYPE STRING,
RESID TYPE STRING,
LINE TYPE STRING,
HEURID TYPE STRING,
LOGNR TYPE STRING,
PLSEC TYPE STRING,
EXGRP TYPE STRING,
PROBCL TYPE STRING,
VFROM TYPE STRING,
VTO TYPE STRING,
STATUS TYPE STRING,
ARBGB TYPE STRING,
MSGNR TYPE STRING,
PARAM1 TYPE STRING,
PARAM2 TYPE STRING,
PARAM3 TYPE STRING,
PARAM4 TYPE STRING,
PRIORITY TYPE STRING,
TIMESTAMP TYPE STRING,
KEY_FIG1 TYPE STRING,
KEY_FIG2 TYPE STRING,
KEY_FIG3 TYPE STRING,
KEY_FIG4 TYPE STRING,
KEY_FIG5 TYPE STRING,
KEY_FIG6 TYPE STRING,
KEY_FIG7 TYPE STRING,
AID_INT TYPE STRING,
AM_PARAM1 TYPE STRING,
USER_CREATED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/ALERT_HP_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_/SAPAPO/ALERT_HP_STR-MANDT sy-vline 
WA_/SAPAPO/ALERT_HP_STR-AID sy-vline 
WA_/SAPAPO/ALERT_HP_STR-PLVER sy-vline 
WA_/SAPAPO/ALERT_HP_STR-AOT sy-vline 
WA_/SAPAPO/ALERT_HP_STR-AT_ID sy-vline 
WA_/SAPAPO/ALERT_HP_STR-PEGID sy-vline 
WA_/SAPAPO/ALERT_HP_STR-RESID sy-vline 
WA_/SAPAPO/ALERT_HP_STR-LINE sy-vline 
WA_/SAPAPO/ALERT_HP_STR-HEURID sy-vline 
WA_/SAPAPO/ALERT_HP_STR-LOGNR sy-vline 
WA_/SAPAPO/ALERT_HP_STR-PLSEC sy-vline 
WA_/SAPAPO/ALERT_HP_STR-EXGRP sy-vline 
WA_/SAPAPO/ALERT_HP_STR-PROBCL sy-vline 
WA_/SAPAPO/ALERT_HP_STR-VFROM sy-vline 
WA_/SAPAPO/ALERT_HP_STR-VTO sy-vline 
WA_/SAPAPO/ALERT_HP_STR-STATUS sy-vline 
WA_/SAPAPO/ALERT_HP_STR-ARBGB sy-vline 
WA_/SAPAPO/ALERT_HP_STR-MSGNR sy-vline 
WA_/SAPAPO/ALERT_HP_STR-PARAM1 sy-vline 
WA_/SAPAPO/ALERT_HP_STR-PARAM2 sy-vline 
WA_/SAPAPO/ALERT_HP_STR-PARAM3 sy-vline 
WA_/SAPAPO/ALERT_HP_STR-PARAM4 sy-vline 
WA_/SAPAPO/ALERT_HP_STR-PRIORITY sy-vline 
WA_/SAPAPO/ALERT_HP_STR-TIMESTAMP sy-vline 
WA_/SAPAPO/ALERT_HP_STR-KEY_FIG1 sy-vline 
WA_/SAPAPO/ALERT_HP_STR-KEY_FIG2 sy-vline 
WA_/SAPAPO/ALERT_HP_STR-KEY_FIG3 sy-vline 
WA_/SAPAPO/ALERT_HP_STR-KEY_FIG4 sy-vline 
WA_/SAPAPO/ALERT_HP_STR-KEY_FIG5 sy-vline 
WA_/SAPAPO/ALERT_HP_STR-KEY_FIG6 sy-vline 
WA_/SAPAPO/ALERT_HP_STR-KEY_FIG7 sy-vline 
WA_/SAPAPO/ALERT_HP_STR-AID_INT sy-vline 
WA_/SAPAPO/ALERT_HP_STR-AM_PARAM1 sy-vline 
WA_/SAPAPO/ALERT_HP_STR-USER_CREATED sy-vline      INTO ld_text SEPARATED BY SPACE.

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