ABAP Select data from SAP table PNO_EDG_WTC_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PNO_EDG_WTC_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 PNO_EDG_WTC_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 PNO_EDG_WTC_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_PNO_EDG_WTC_ALV TYPE STANDARD TABLE OF PNO_EDG_WTC_ALV,
      WA_PNO_EDG_WTC_ALV TYPE PNO_EDG_WTC_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: <PNO_EDG_WTC_ALV> TYPE PNO_EDG_WTC_ALV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PNO_EDG_WTC_ALV
*  INTO TABLE @DATA(IT_PNO_EDG_WTC_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_PNO_EDG_WTC_ALV INDEX 1 INTO DATA(WA_PNO_EDG_WTC_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PNO_EDG_WTC_ALV>-MANDT = 1.
<PNO_EDG_WTC_ALV>-LGART = 1.
<PNO_EDG_WTC_ALV>-LGTXT = 1.
<PNO_EDG_WTC_ALV>-CUST_TYPE = 1.
<PNO_EDG_WTC_ALV>-LGGRN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PNO_EDG_WTC_ALV-LGGRN_TEXT, sy-vline,
  WA_PNO_EDG_WTC_ALV-TAXKEY, sy-vline,
  WA_PNO_EDG_WTC_ALV-TAXKEY_TEXT, sy-vline,
  WA_PNO_EDG_WTC_ALV-BENEF, sy-vline,
  WA_PNO_EDG_WTC_ALV-BENEF_TEXT, sy-vline,
  WA_PNO_EDG_WTC_ALV-SDINT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PNO_EDG_WTC_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_PNO_EDG_WTC_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_PNO_EDG_WTC_ALV INTO WA_PNO_EDG_WTC_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_PNO_EDG_WTC_ALV_STR, 
MANDT TYPE STRING,
LGART TYPE STRING,
LGTXT TYPE STRING,
CUST_TYPE TYPE STRING,
LGGRN TYPE STRING,
LGGRN_TEXT TYPE STRING,
TAXKEY TYPE STRING,
TAXKEY_TEXT TYPE STRING,
BENEF TYPE STRING,
BENEF_TEXT TYPE STRING,
SDINT TYPE STRING,
DESSI TYPE STRING,
DESWT TYPE STRING,
DESWT_TEXT TYPE STRING,
GENRU TYPE STRING,
GRUTX_1 TYPE STRING,
GRUTX_2 TYPE STRING,
TAXERC_RULE TYPE STRING,
AMOUNT TYPE STRING,
QUANTITY TYPE STRING,
ERCBASE TYPE STRING,
ERCBASE_TEXT TYPE STRING,
TAXBASE TYPE STRING,
TAXBASE_TEXT TYPE STRING,
AINFO TYPE STRING,
FVERS TYPE STRING,
SEQNR TYPE STRING,
FTEXT TYPE STRING,
RLGRP TYPE STRING,
ITPID TYPE STRING,
ITPID_TEXT TYPE STRING,
SINFO TYPE STRING,
SVERS TYPE STRING,
SEQNR_SPECI TYPE STRING,
FTEXT_SPECI TYPE STRING,
ITPID_SPECI TYPE STRING,
ITPID_SPECI_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PNO_EDG_WTC_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_PNO_EDG_WTC_ALV_STR-MANDT sy-vline 
WA_PNO_EDG_WTC_ALV_STR-LGART sy-vline 
WA_PNO_EDG_WTC_ALV_STR-LGTXT sy-vline 
WA_PNO_EDG_WTC_ALV_STR-CUST_TYPE sy-vline 
WA_PNO_EDG_WTC_ALV_STR-LGGRN sy-vline 
WA_PNO_EDG_WTC_ALV_STR-LGGRN_TEXT sy-vline 
WA_PNO_EDG_WTC_ALV_STR-TAXKEY sy-vline 
WA_PNO_EDG_WTC_ALV_STR-TAXKEY_TEXT sy-vline 
WA_PNO_EDG_WTC_ALV_STR-BENEF sy-vline 
WA_PNO_EDG_WTC_ALV_STR-BENEF_TEXT sy-vline 
WA_PNO_EDG_WTC_ALV_STR-SDINT sy-vline 
WA_PNO_EDG_WTC_ALV_STR-DESSI sy-vline 
WA_PNO_EDG_WTC_ALV_STR-DESWT sy-vline 
WA_PNO_EDG_WTC_ALV_STR-DESWT_TEXT sy-vline 
WA_PNO_EDG_WTC_ALV_STR-GENRU sy-vline 
WA_PNO_EDG_WTC_ALV_STR-GRUTX_1 sy-vline 
WA_PNO_EDG_WTC_ALV_STR-GRUTX_2 sy-vline 
WA_PNO_EDG_WTC_ALV_STR-TAXERC_RULE sy-vline 
WA_PNO_EDG_WTC_ALV_STR-AMOUNT sy-vline 
WA_PNO_EDG_WTC_ALV_STR-QUANTITY sy-vline 
WA_PNO_EDG_WTC_ALV_STR-ERCBASE sy-vline 
WA_PNO_EDG_WTC_ALV_STR-ERCBASE_TEXT sy-vline 
WA_PNO_EDG_WTC_ALV_STR-TAXBASE sy-vline 
WA_PNO_EDG_WTC_ALV_STR-TAXBASE_TEXT sy-vline 
WA_PNO_EDG_WTC_ALV_STR-AINFO sy-vline 
WA_PNO_EDG_WTC_ALV_STR-FVERS sy-vline 
WA_PNO_EDG_WTC_ALV_STR-SEQNR sy-vline 
WA_PNO_EDG_WTC_ALV_STR-FTEXT sy-vline 
WA_PNO_EDG_WTC_ALV_STR-RLGRP sy-vline 
WA_PNO_EDG_WTC_ALV_STR-ITPID sy-vline 
WA_PNO_EDG_WTC_ALV_STR-ITPID_TEXT sy-vline 
WA_PNO_EDG_WTC_ALV_STR-SINFO sy-vline 
WA_PNO_EDG_WTC_ALV_STR-SVERS sy-vline 
WA_PNO_EDG_WTC_ALV_STR-SEQNR_SPECI sy-vline 
WA_PNO_EDG_WTC_ALV_STR-FTEXT_SPECI sy-vline 
WA_PNO_EDG_WTC_ALV_STR-ITPID_SPECI sy-vline 
WA_PNO_EDG_WTC_ALV_STR-ITPID_SPECI_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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