ABAP Select data from SAP table PIHUERRSTAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIHUERRSTAT
*  INTO TABLE @DATA(IT_PIHUERRSTAT2).
*--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_PIHUERRSTAT INDEX 1 INTO DATA(WA_PIHUERRSTAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIHUERRSTAT>-HUNUM = 1.
<PIHUERRSTAT>-HUITEM = 1.
<PIHUERRSTAT>-PIITEM = 1.
<PIHUERRSTAT>-ITEMTYPE = 1.
<PIHUERRSTAT>-PACKNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIHUERRSTAT-POBJID, sy-vline,
  WA_PIHUERRSTAT-PAITEMTYPE, sy-vline,
  WA_PIHUERRSTAT-COMPONENT, sy-vline,
  WA_PIHUERRSTAT-TRGQTY, sy-vline,
  WA_PIHUERRSTAT-MINQTY, sy-vline,
  WA_PIHUERRSTAT-RNDQTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIHUERRSTAT 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_PIHUERRSTAT 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_PIHUERRSTAT INTO WA_PIHUERRSTAT.


*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 ALPHA, internal->external for field POBJID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PIHUERRSTAT-POBJID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIHUERRSTAT-POBJID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUNIT_B
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIHUERRSTAT-QUNIT_B
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIHUERRSTAT-QUNIT_B.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUNIT_A
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIHUERRSTAT-QUNIT_A
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIHUERRSTAT-QUNIT_A.
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_PIHUERRSTAT_STR, 
HUNUM TYPE STRING,
HUITEM TYPE STRING,
PIITEM TYPE STRING,
ITEMTYPE TYPE STRING,
PACKNR TYPE STRING,
POBJID TYPE STRING,
PAITEMTYPE TYPE STRING,
COMPONENT TYPE STRING,
TRGQTY TYPE STRING,
MINQTY TYPE STRING,
RNDQTY TYPE STRING,
QUNIT_B TYPE STRING,
QUNIT_A TYPE STRING,
ERROR TYPE STRING,
PACKSTATU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIHUERRSTAT_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_PIHUERRSTAT_STR-HUNUM sy-vline 
WA_PIHUERRSTAT_STR-HUITEM sy-vline 
WA_PIHUERRSTAT_STR-PIITEM sy-vline 
WA_PIHUERRSTAT_STR-ITEMTYPE sy-vline 
WA_PIHUERRSTAT_STR-PACKNR sy-vline 
WA_PIHUERRSTAT_STR-POBJID sy-vline 
WA_PIHUERRSTAT_STR-PAITEMTYPE sy-vline 
WA_PIHUERRSTAT_STR-COMPONENT sy-vline 
WA_PIHUERRSTAT_STR-TRGQTY sy-vline 
WA_PIHUERRSTAT_STR-MINQTY sy-vline 
WA_PIHUERRSTAT_STR-RNDQTY sy-vline 
WA_PIHUERRSTAT_STR-QUNIT_B sy-vline 
WA_PIHUERRSTAT_STR-QUNIT_A sy-vline 
WA_PIHUERRSTAT_STR-ERROR sy-vline 
WA_PIHUERRSTAT_STR-PACKSTATU sy-vline      INTO ld_text SEPARATED BY SPACE.

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