ABAP Select data from SAP table /AIF/TEST_ECATT_IDOC_DATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /AIF/TEST_ECATT_IDOC_DATA 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 /AIF/TEST_ECATT_IDOC_DATA. 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 /AIF/TEST_ECATT_IDOC_DATA 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_/AIF/TEST_ECATT_IDOC_DATA TYPE STANDARD TABLE OF /AIF/TEST_ECATT_IDOC_DATA,
      WA_/AIF/TEST_ECATT_IDOC_DATA TYPE /AIF/TEST_ECATT_IDOC_DATA,
      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: </AIF/TEST_ECATT_IDOC_DATA> TYPE /AIF/TEST_ECATT_IDOC_DATA.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /AIF/TEST_ECATT_IDOC_DATA
  INTO TABLE IT_/AIF/TEST_ECATT_IDOC_DATA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /AIF/TEST_ECATT_IDOC_DATA
*  INTO TABLE @DATA(IT_/AIF/TEST_ECATT_IDOC_DATA2).
*--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_/AIF/TEST_ECATT_IDOC_DATA INDEX 1 INTO DATA(WA_/AIF/TEST_ECATT_IDOC_DATA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/AIF/TEST_ECATT_IDOC_DATA ASSIGNING </AIF/TEST_ECATT_IDOC_DATA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</AIF/TEST_ECATT_IDOC_DATA>-EDIDC = 1.
</AIF/TEST_ECATT_IDOC_DATA>-TABNAM = 1.
</AIF/TEST_ECATT_IDOC_DATA>-MANDT = 1.
</AIF/TEST_ECATT_IDOC_DATA>-DOCNUM = 1.
</AIF/TEST_ECATT_IDOC_DATA>-DOCREL = 1.

ENDLOOP.

LOOP AT IT_/AIF/TEST_ECATT_IDOC_DATA INTO WA_/AIF/TEST_ECATT_IDOC_DATA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/AIF/TEST_ECATT_IDOC_DATA-STATUS, sy-vline,
  WA_/AIF/TEST_ECATT_IDOC_DATA-DIRECT, sy-vline,
  WA_/AIF/TEST_ECATT_IDOC_DATA-OUTMOD, sy-vline,
  WA_/AIF/TEST_ECATT_IDOC_DATA-EXPRSS, sy-vline,
  WA_/AIF/TEST_ECATT_IDOC_DATA-TEST, sy-vline,
  WA_/AIF/TEST_ECATT_IDOC_DATA-IDOCTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/AIF/TEST_ECATT_IDOC_DATA 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_/AIF/TEST_ECATT_IDOC_DATA 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_/AIF/TEST_ECATT_IDOC_DATA INTO WA_/AIF/TEST_ECATT_IDOC_DATA.


*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 EDIPV, internal->external for field SNDPFC
CALL FUNCTION 'CONVERSION_EXIT_EDIPV_OUTPUT'
  EXPORTING
    input =                      WA_/AIF/TEST_ECATT_IDOC_DATA-SNDPFC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/AIF/TEST_ECATT_IDOC_DATA-SNDPFC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SNDPRN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/AIF/TEST_ECATT_IDOC_DATA-SNDPRN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/AIF/TEST_ECATT_IDOC_DATA-SNDPRN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EDIPV, internal->external for field RCVPFC
CALL FUNCTION 'CONVERSION_EXIT_EDIPV_OUTPUT'
  EXPORTING
    input =                      WA_/AIF/TEST_ECATT_IDOC_DATA-RCVPFC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/AIF/TEST_ECATT_IDOC_DATA-RCVPFC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCVPRN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/AIF/TEST_ECATT_IDOC_DATA-RCVPRN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/AIF/TEST_ECATT_IDOC_DATA-RCVPRN.
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_/AIF/TEST_ECATT_IDOC_DATA_STR, 
EDIDC TYPE STRING,
TABNAM TYPE STRING,
MANDT TYPE STRING,
DOCNUM TYPE STRING,
DOCREL TYPE STRING,
STATUS TYPE STRING,
DIRECT TYPE STRING,
OUTMOD TYPE STRING,
EXPRSS TYPE STRING,
TEST TYPE STRING,
IDOCTYP TYPE STRING,
CIMTYP TYPE STRING,
MESTYP TYPE STRING,
MESCOD TYPE STRING,
MESFCT TYPE STRING,
STD TYPE STRING,
STDVRS TYPE STRING,
STDMES TYPE STRING,
SNDPOR TYPE STRING,
SNDPRT TYPE STRING,
SNDPFC TYPE STRING,
SNDPRN TYPE STRING,
SNDSAD TYPE STRING,
SNDLAD TYPE STRING,
RCVPOR TYPE STRING,
RCVPRT TYPE STRING,
RCVPFC TYPE STRING,
RCVPRN TYPE STRING,
RCVSAD TYPE STRING,
RCVLAD TYPE STRING,
CREDAT TYPE STRING,
CRETIM TYPE STRING,
REFINT TYPE STRING,
REFGRP TYPE STRING,
REFMES TYPE STRING,
ARCKEY TYPE STRING,
SERIAL TYPE STRING,
EDIDD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/AIF/TEST_ECATT_IDOC_DATA_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_/AIF/TEST_ECATT_IDOC_DATA_STR-EDIDC sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-TABNAM sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-MANDT sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-DOCNUM sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-DOCREL sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-STATUS sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-DIRECT sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-OUTMOD sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-EXPRSS sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-TEST sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-IDOCTYP sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-CIMTYP sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-MESTYP sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-MESCOD sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-MESFCT sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-STD sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-STDVRS sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-STDMES sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-SNDPOR sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-SNDPRT sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-SNDPFC sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-SNDPRN sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-SNDSAD sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-SNDLAD sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-RCVPOR sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-RCVPRT sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-RCVPFC sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-RCVPRN sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-RCVSAD sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-RCVLAD sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-CREDAT sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-CRETIM sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-REFINT sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-REFGRP sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-REFMES sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-ARCKEY sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-SERIAL sy-vline 
WA_/AIF/TEST_ECATT_IDOC_DATA_STR-EDIDD sy-vline      INTO ld_text SEPARATED BY SPACE.

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