ABAP Select data from SAP table EHFNDS_API_ECTX_TX_AAINV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHFNDS_API_ECTX_TX_AAINV
*  INTO TABLE @DATA(IT_EHFNDS_API_ECTX_TX_AAINV2).
*--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_EHFNDS_API_ECTX_TX_AAINV INDEX 1 INTO DATA(WA_EHFNDS_API_ECTX_TX_AAINV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHFNDS_API_ECTX_TX_AAINV>-SENDER_TECHNICAL_ID = 1.
<EHFNDS_API_ECTX_TX_AAINV>-INTERNAL_NUMBER = 1.
<EHFNDS_API_ECTX_TX_AAINV>-KEY = 1.
<EHFNDS_API_ECTX_TX_AAINV>-PARENT_KEY = 1.
<EHFNDS_API_ECTX_TX_AAINV>-ROOT_KEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHFNDS_API_ECTX_TX_AAINV-PCECTXSPECIESPHRSUUID, sy-vline,
  WA_EHFNDS_API_ECTX_TX_AAINV-PCECTXSPECIESPHRS, sy-vline,
  WA_EHFNDS_API_ECTX_TX_AAINV-PCECTXEXPSRDURNASTEXT, sy-vline,
  WA_EHFNDS_API_ECTX_TX_AAINV-PCECTXEXPSRUOM, sy-vline,
  WA_EHFNDS_API_ECTX_TX_AAINV-PCECTXVALUETYPEPHRSUUID, sy-vline,
  WA_EHFNDS_API_ECTX_TX_AAINV-PCECTXVALUETYPEPHRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHFNDS_API_ECTX_TX_AAINV 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_EHFNDS_API_ECTX_TX_AAINV 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_EHFNDS_API_ECTX_TX_AAINV INTO WA_EHFNDS_API_ECTX_TX_AAINV.


*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 SPEC1, internal->external for field INTERNAL_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_SPEC1_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_API_ECTX_TX_AAINV-INTERNAL_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_API_ECTX_TX_AAINV-INTERNAL_NUMBER.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field PCECTXVALUEUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_API_ECTX_TX_AAINV-PCECTXVALUEUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_API_ECTX_TX_AAINV-PCECTXVALUEUOM.
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_EHFNDS_API_ECTX_TX_AAINV_STR, 
SENDER_TECHNICAL_ID TYPE STRING,
INTERNAL_NUMBER TYPE STRING,
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
PCECTXSPECIESPHRSUUID TYPE STRING,
PCECTXSPECIESPHRS TYPE STRING,
PCECTXEXPSRDURNASTEXT TYPE STRING,
PCECTXEXPSRUOM TYPE STRING,
PCECTXVALUETYPEPHRSUUID TYPE STRING,
PCECTXVALUETYPEPHRS TYPE STRING,
PCECTXVALUELOWRQTYTXT TYPE STRING,
PCECTXVALUELOWRQTYOPTR TYPE STRING,
PCECTXVALUEUPRQTYTXT TYPE STRING,
PCECTXVALUEUPRQTYOPTR TYPE STRING,
PCECTXVALUEUOM TYPE STRING,
PCECTXMETHODPHRSUUID TYPE STRING,
PCECTXMETHODPHRS TYPE STRING,
PCECTXNOTETEXT TYPE STRING,
PCECTXRATING TYPE STRING,
PCECTXADDLSTATEMENTPHRSUUID TYPE STRING,
PCECTXADDLSTATEMENTPHRS TYPE STRING,
PCECTXASSMTPHRSUUID TYPE STRING,
PCECTXASSMTPHRS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHFNDS_API_ECTX_TX_AAINV_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_EHFNDS_API_ECTX_TX_AAINV_STR-SENDER_TECHNICAL_ID sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-INTERNAL_NUMBER sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-KEY sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PARENT_KEY sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-ROOT_KEY sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXSPECIESPHRSUUID sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXSPECIESPHRS sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXEXPSRDURNASTEXT sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXEXPSRUOM sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXVALUETYPEPHRSUUID sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXVALUETYPEPHRS sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXVALUELOWRQTYTXT sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXVALUELOWRQTYOPTR sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXVALUEUPRQTYTXT sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXVALUEUPRQTYOPTR sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXVALUEUOM sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXMETHODPHRSUUID sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXMETHODPHRS sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXNOTETEXT sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXRATING sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXADDLSTATEMENTPHRSUUID sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXADDLSTATEMENTPHRS sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXASSMTPHRSUUID sy-vline 
WA_EHFNDS_API_ECTX_TX_AAINV_STR-PCECTXASSMTPHRS sy-vline      INTO ld_text SEPARATED BY SPACE.

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