ABAP Select data from SAP table PGHOALCNTIDTXTTL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PGHOALCNTIDTXTTL
*  INTO TABLE @DATA(IT_PGHOALCNTIDTXTTL2).
*--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_PGHOALCNTIDTXTTL INDEX 1 INTO DATA(WA_PGHOALCNTIDTXTTL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PGHOALCNTIDTXTTL>-MANDT = 1.
<PGHOALCNTIDTXTTL>-NETWORKORIGINNODEID = 1.
<PGHOALCNTIDTXTTL>-ALLOCATIONRUNID = 1.
<PGHOALCNTIDTXTTL>-DESTINATIONNODEID = 1.
<PGHOALCNTIDTXTTL>-QUANTITYTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PGHOALCNTIDTXTTL-UNITOFMEASURE, sy-vline,
  WA_PGHOALCNTIDTXTTL-HYDROCARBONVOLUME, sy-vline,
  WA_PGHOALCNTIDTXTTL-QUANTITYCATEGORY, sy-vline,
  WA_PGHOALCNTIDTXTTL-ALLOCATIONMATERIAL, sy-vline,
  WA_PGHOALCNTIDTXTTL-NETWORKOBJECTTYPE, sy-vline,
  WA_PGHOALCNTIDTXTTL-NETWORKOBJECTDESCRIPTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PGHOALCNTIDTXTTL 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_PGHOALCNTIDTXTTL 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_PGHOALCNTIDTXTTL INTO WA_PGHOALCNTIDTXTTL.


*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 TPLNR, internal->external for field NETWORKORIGINNODEID
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_PGHOALCNTIDTXTTL-NETWORKORIGINNODEID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PGHOALCNTIDTXTTL-NETWORKORIGINNODEID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field DESTINATIONNODEID
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_PGHOALCNTIDTXTTL-DESTINATIONNODEID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PGHOALCNTIDTXTTL-DESTINATIONNODEID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field ALLOCATIONMATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PGHOALCNTIDTXTTL-ALLOCATIONMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PGHOALCNTIDTXTTL-ALLOCATIONMATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field NETWORKOBJECTID
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_PGHOALCNTIDTXTTL-NETWORKOBJECTID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PGHOALCNTIDTXTTL-NETWORKOBJECTID.
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_PGHOALCNTIDTXTTL_STR, 
MANDT TYPE STRING,
NETWORKORIGINNODEID TYPE STRING,
ALLOCATIONRUNID TYPE STRING,
DESTINATIONNODEID TYPE STRING,
QUANTITYTYPE TYPE STRING,
UNITOFMEASURE TYPE STRING,
HYDROCARBONVOLUME TYPE STRING,
QUANTITYCATEGORY TYPE STRING,
ALLOCATIONMATERIAL TYPE STRING,
NETWORKOBJECTTYPE TYPE STRING,
NETWORKOBJECTDESCRIPTION TYPE STRING,
NETWORKMEDIUM TYPE STRING,
ALLOCATIONFREQUENCYCODE TYPE STRING,
UPSTREAMPRODTIMESTAMP TYPE STRING,
UPSTREAMTIMEZONE TYPE STRING,
PRODUCTIONDATE TYPE STRING,
NETWORKOBJECTID TYPE STRING,
PRODUCTIONNETWORKDESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PGHOALCNTIDTXTTL_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_PGHOALCNTIDTXTTL_STR-MANDT sy-vline 
WA_PGHOALCNTIDTXTTL_STR-NETWORKORIGINNODEID sy-vline 
WA_PGHOALCNTIDTXTTL_STR-ALLOCATIONRUNID sy-vline 
WA_PGHOALCNTIDTXTTL_STR-DESTINATIONNODEID sy-vline 
WA_PGHOALCNTIDTXTTL_STR-QUANTITYTYPE sy-vline 
WA_PGHOALCNTIDTXTTL_STR-UNITOFMEASURE sy-vline 
WA_PGHOALCNTIDTXTTL_STR-HYDROCARBONVOLUME sy-vline 
WA_PGHOALCNTIDTXTTL_STR-QUANTITYCATEGORY sy-vline 
WA_PGHOALCNTIDTXTTL_STR-ALLOCATIONMATERIAL sy-vline 
WA_PGHOALCNTIDTXTTL_STR-NETWORKOBJECTTYPE sy-vline 
WA_PGHOALCNTIDTXTTL_STR-NETWORKOBJECTDESCRIPTION sy-vline 
WA_PGHOALCNTIDTXTTL_STR-NETWORKMEDIUM sy-vline 
WA_PGHOALCNTIDTXTTL_STR-ALLOCATIONFREQUENCYCODE sy-vline 
WA_PGHOALCNTIDTXTTL_STR-UPSTREAMPRODTIMESTAMP sy-vline 
WA_PGHOALCNTIDTXTTL_STR-UPSTREAMTIMEZONE sy-vline 
WA_PGHOALCNTIDTXTTL_STR-PRODUCTIONDATE sy-vline 
WA_PGHOALCNTIDTXTTL_STR-NETWORKOBJECTID sy-vline 
WA_PGHOALCNTIDTXTTL_STR-PRODUCTIONNETWORKDESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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