ABAP Select data from SAP table PYD_S_ALI_EXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PYD_S_ALI_EXT
*  INTO TABLE @DATA(IT_PYD_S_ALI_EXT2).
*--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_PYD_S_ALI_EXT INDEX 1 INTO DATA(WA_PYD_S_ALI_EXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PYD_S_ALI_EXT>-TRIGGER_PAR_TYPE = 1.
<PYD_S_ALI_EXT>-TRIGGER_ROID = 1.
<PYD_S_ALI_EXT>-TRIGGER_RDT = 1.
<PYD_S_ALI_EXT>-DAE_EVENT_ID = 1.
<PYD_S_ALI_EXT>-IS_TECHNICAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PYD_S_ALI_EXT-SEVERITY, sy-vline,
  WA_PYD_S_ALI_EXT-ARBGB, sy-vline,
  WA_PYD_S_ALI_EXT-MSGNR, sy-vline,
  WA_PYD_S_ALI_EXT-VALUE1, sy-vline,
  WA_PYD_S_ALI_EXT-DATUM1, sy-vline,
  WA_PYD_S_ALI_EXT-DATE_TIME1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PYD_S_ALI_EXT 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_PYD_S_ALI_EXT 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_PYD_S_ALI_EXT INTO WA_PYD_S_ALI_EXT.


*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 CUNIT, internal->external for field UNIT1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PYD_S_ALI_EXT-UNIT1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PYD_S_ALI_EXT-UNIT1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT2
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PYD_S_ALI_EXT-UNIT2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PYD_S_ALI_EXT-UNIT2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT3
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PYD_S_ALI_EXT-UNIT3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PYD_S_ALI_EXT-UNIT3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT4
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PYD_S_ALI_EXT-UNIT4
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PYD_S_ALI_EXT-UNIT4.
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_PYD_S_ALI_EXT_STR, 
TRIGGER_PAR_TYPE TYPE STRING,
TRIGGER_ROID TYPE STRING,
TRIGGER_RDT TYPE STRING,
DAE_EVENT_ID TYPE STRING,
IS_TECHNICAL TYPE STRING,
SEVERITY TYPE STRING,
ARBGB TYPE STRING,
MSGNR TYPE STRING,
VALUE1 TYPE STRING,
DATUM1 TYPE STRING,
DATE_TIME1 TYPE STRING,
CURRENCY1 TYPE STRING,
UNIT1 TYPE STRING,
VALUE2 TYPE STRING,
DATUM2 TYPE STRING,
DATE_TIME2 TYPE STRING,
CURRENCY2 TYPE STRING,
UNIT2 TYPE STRING,
VALUE3 TYPE STRING,
DATUM3 TYPE STRING,
DATE_TIME3 TYPE STRING,
CURRENCY3 TYPE STRING,
UNIT3 TYPE STRING,
VALUE4 TYPE STRING,
DATUM4 TYPE STRING,
DATE_TIME4 TYPE STRING,
CURRENCY4 TYPE STRING,
UNIT4 TYPE STRING,
IS_SUB_AL_KEY TYPE STRING,
ROID_NAME TYPE STRING,
ACTION TYPE STRING,
SEARCH_FIELD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PYD_S_ALI_EXT_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_PYD_S_ALI_EXT_STR-TRIGGER_PAR_TYPE sy-vline 
WA_PYD_S_ALI_EXT_STR-TRIGGER_ROID sy-vline 
WA_PYD_S_ALI_EXT_STR-TRIGGER_RDT sy-vline 
WA_PYD_S_ALI_EXT_STR-DAE_EVENT_ID sy-vline 
WA_PYD_S_ALI_EXT_STR-IS_TECHNICAL sy-vline 
WA_PYD_S_ALI_EXT_STR-SEVERITY sy-vline 
WA_PYD_S_ALI_EXT_STR-ARBGB sy-vline 
WA_PYD_S_ALI_EXT_STR-MSGNR sy-vline 
WA_PYD_S_ALI_EXT_STR-VALUE1 sy-vline 
WA_PYD_S_ALI_EXT_STR-DATUM1 sy-vline 
WA_PYD_S_ALI_EXT_STR-DATE_TIME1 sy-vline 
WA_PYD_S_ALI_EXT_STR-CURRENCY1 sy-vline 
WA_PYD_S_ALI_EXT_STR-UNIT1 sy-vline 
WA_PYD_S_ALI_EXT_STR-VALUE2 sy-vline 
WA_PYD_S_ALI_EXT_STR-DATUM2 sy-vline 
WA_PYD_S_ALI_EXT_STR-DATE_TIME2 sy-vline 
WA_PYD_S_ALI_EXT_STR-CURRENCY2 sy-vline 
WA_PYD_S_ALI_EXT_STR-UNIT2 sy-vline 
WA_PYD_S_ALI_EXT_STR-VALUE3 sy-vline 
WA_PYD_S_ALI_EXT_STR-DATUM3 sy-vline 
WA_PYD_S_ALI_EXT_STR-DATE_TIME3 sy-vline 
WA_PYD_S_ALI_EXT_STR-CURRENCY3 sy-vline 
WA_PYD_S_ALI_EXT_STR-UNIT3 sy-vline 
WA_PYD_S_ALI_EXT_STR-VALUE4 sy-vline 
WA_PYD_S_ALI_EXT_STR-DATUM4 sy-vline 
WA_PYD_S_ALI_EXT_STR-DATE_TIME4 sy-vline 
WA_PYD_S_ALI_EXT_STR-CURRENCY4 sy-vline 
WA_PYD_S_ALI_EXT_STR-UNIT4 sy-vline 
WA_PYD_S_ALI_EXT_STR-IS_SUB_AL_KEY sy-vline 
WA_PYD_S_ALI_EXT_STR-ROID_NAME sy-vline 
WA_PYD_S_ALI_EXT_STR-ACTION sy-vline 
WA_PYD_S_ALI_EXT_STR-SEARCH_FIELD sy-vline      INTO ld_text SEPARATED BY SPACE.

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