ABAP Select data from SAP table PAEP_HAEIPAI0_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PAEP_HAEIPAI0_ALV 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 PAEP_HAEIPAI0_ALV. 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 PAEP_HAEIPAI0_ALV 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_PAEP_HAEIPAI0_ALV TYPE STANDARD TABLE OF PAEP_HAEIPAI0_ALV,
      WA_PAEP_HAEIPAI0_ALV TYPE PAEP_HAEIPAI0_ALV,
      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: <PAEP_HAEIPAI0_ALV> TYPE PAEP_HAEIPAI0_ALV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PAEP_HAEIPAI0_ALV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PAEP_HAEIPAI0_ALV
  INTO TABLE IT_PAEP_HAEIPAI0_ALV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PAEP_HAEIPAI0_ALV
*  INTO TABLE @DATA(IT_PAEP_HAEIPAI0_ALV2).
*--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_PAEP_HAEIPAI0_ALV INDEX 1 INTO DATA(WA_PAEP_HAEIPAI0_ALV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PAEP_HAEIPAI0_ALV ASSIGNING <PAEP_HAEIPAI0_ALV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PAEP_HAEIPAI0_ALV>-PERNR = 1.
<PAEP_HAEIPAI0_ALV>-ENAME = 1.
<PAEP_HAEIPAI0_ALV>-HIRDA = 1.
<PAEP_HAEIPAI0_ALV>-PLANS = 1.
<PAEP_HAEIPAI0_ALV>-PLSTX = 1.

ENDLOOP.

LOOP AT IT_PAEP_HAEIPAI0_ALV INTO WA_PAEP_HAEIPAI0_ALV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PAEP_HAEIPAI0_ALV-STELL, sy-vline,
  WA_PAEP_HAEIPAI0_ALV-STLTX, sy-vline,
  WA_PAEP_HAEIPAI0_ALV-TRFAR, sy-vline,
  WA_PAEP_HAEIPAI0_ALV-TARTX, sy-vline,
  WA_PAEP_HAEIPAI0_ALV-TRFGB, sy-vline,
  WA_PAEP_HAEIPAI0_ALV-TGBTX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PAEP_HAEIPAI0_ALV 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_PAEP_HAEIPAI0_ALV 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_PAEP_HAEIPAI0_ALV INTO WA_PAEP_HAEIPAI0_ALV.


*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_PAEP_HAEIPAI0_ALV_STR, 
PERNR TYPE STRING,
ENAME TYPE STRING,
HIRDA TYPE STRING,
PLANS TYPE STRING,
PLSTX TYPE STRING,
STELL TYPE STRING,
STLTX TYPE STRING,
TRFAR TYPE STRING,
TARTX TYPE STRING,
TRFGB TYPE STRING,
TGBTX TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
NRFST TYPE STRING,
LGART TYPE STRING,
OAMOU TYPE STRING,
NAMOU TYPE STRING,
LGA01 TYPE STRING,
AMNT1 TYPE STRING,
NAMNT TYPE STRING,
WAERS TYPE STRING,
BISTA TYPE STRING,
DISTA TYPE STRING,
STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PAEP_HAEIPAI0_ALV_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_PAEP_HAEIPAI0_ALV_STR-PERNR sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-ENAME sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-HIRDA sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-PLANS sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-PLSTX sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-STELL sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-STLTX sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-TRFAR sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-TARTX sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-TRFGB sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-TGBTX sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-TRFGR sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-TRFST sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-NRFST sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-LGART sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-OAMOU sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-NAMOU sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-LGA01 sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-AMNT1 sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-NAMNT sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-WAERS sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-BISTA sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-DISTA sy-vline 
WA_PAEP_HAEIPAI0_ALV_STR-STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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