ABAP Select data from SAP table EAMS_S_NAV_DIR_ID_ATTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EAMS_S_NAV_DIR_ID_ATTR
*  INTO TABLE @DATA(IT_EAMS_S_NAV_DIR_ID_ATTR2).
*--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_EAMS_S_NAV_DIR_ID_ATTR INDEX 1 INTO DATA(WA_EAMS_S_NAV_DIR_ID_ATTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EAMS_S_NAV_DIR_ID_ATTR>-INTID = 1.
<EAMS_S_NAV_DIR_ID_ATTR>-NAV_LOGSYS = 1.
<EAMS_S_NAV_DIR_ID_ATTR>-DISPLAY_KEY = 1.
<EAMS_S_NAV_DIR_ID_ATTR>-DESCRIPTION = 1.
<EAMS_S_NAV_DIR_ID_ATTR>-STATUSEXTERN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EAMS_S_NAV_DIR_ID_ATTR-DOSTX, sy-vline,
  WA_EAMS_S_NAV_DIR_ID_ATTR-USERNAME, sy-vline,
  WA_EAMS_S_NAV_DIR_ID_ATTR-ECNUMBER, sy-vline,
  WA_EAMS_S_NAV_DIR_ID_ATTR-CADINDICATOR, sy-vline,
  WA_EAMS_S_NAV_DIR_ID_ATTR-AUTHORITYGROUP, sy-vline,
  WA_EAMS_S_NAV_DIR_ID_ATTR-CREATEDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EAMS_S_NAV_DIR_ID_ATTR 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_EAMS_S_NAV_DIR_ID_ATTR 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_EAMS_S_NAV_DIR_ID_ATTR INTO WA_EAMS_S_NAV_DIR_ID_ATTR.


*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 ALPHA, internal->external for field NAV_LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EAMS_S_NAV_DIR_ID_ATTR-NAV_LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EAMS_S_NAV_DIR_ID_ATTR-NAV_LOGSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ECNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EAMS_S_NAV_DIR_ID_ATTR-ECNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EAMS_S_NAV_DIR_ID_ATTR-ECNUMBER.
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_EAMS_S_NAV_DIR_ID_ATTR_STR, 
INTID TYPE STRING,
NAV_LOGSYS TYPE STRING,
DISPLAY_KEY TYPE STRING,
DESCRIPTION TYPE STRING,
STATUSEXTERN TYPE STRING,
DOSTX TYPE STRING,
USERNAME TYPE STRING,
ECNUMBER TYPE STRING,
CADINDICATOR TYPE STRING,
AUTHORITYGROUP TYPE STRING,
CREATEDATE TYPE STRING,
VALIDFROMDATE TYPE STRING,
LABORATORY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EAMS_S_NAV_DIR_ID_ATTR_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_EAMS_S_NAV_DIR_ID_ATTR_STR-INTID sy-vline 
WA_EAMS_S_NAV_DIR_ID_ATTR_STR-NAV_LOGSYS sy-vline 
WA_EAMS_S_NAV_DIR_ID_ATTR_STR-DISPLAY_KEY sy-vline 
WA_EAMS_S_NAV_DIR_ID_ATTR_STR-DESCRIPTION sy-vline 
WA_EAMS_S_NAV_DIR_ID_ATTR_STR-STATUSEXTERN sy-vline 
WA_EAMS_S_NAV_DIR_ID_ATTR_STR-DOSTX sy-vline 
WA_EAMS_S_NAV_DIR_ID_ATTR_STR-USERNAME sy-vline 
WA_EAMS_S_NAV_DIR_ID_ATTR_STR-ECNUMBER sy-vline 
WA_EAMS_S_NAV_DIR_ID_ATTR_STR-CADINDICATOR sy-vline 
WA_EAMS_S_NAV_DIR_ID_ATTR_STR-AUTHORITYGROUP sy-vline 
WA_EAMS_S_NAV_DIR_ID_ATTR_STR-CREATEDATE sy-vline 
WA_EAMS_S_NAV_DIR_ID_ATTR_STR-VALIDFROMDATE sy-vline 
WA_EAMS_S_NAV_DIR_ID_ATTR_STR-LABORATORY sy-vline      INTO ld_text SEPARATED BY SPACE.

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