ABAP Select data from SAP table ENHHOOKMIGRTEMP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENHHOOKMIGRTEMP
*  INTO TABLE @DATA(IT_ENHHOOKMIGRTEMP2).
*--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_ENHHOOKMIGRTEMP INDEX 1 INTO DATA(WA_ENHHOOKMIGRTEMP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENHHOOKMIGRTEMP>-ID = 1.
<ENHHOOKMIGRTEMP>-OLD_FULLNAME = 1.
<ENHHOOKMIGRTEMP>-NEW_FULLNAME = 1.
<ENHHOOKMIGRTEMP>-OVERWRITE = 1.
<ENHHOOKMIGRTEMP>-MAIN_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENHHOOKMIGRTEMP-MAIN_NAME, sy-vline,
  WA_ENHHOOKMIGRTEMP-MAIN_PROG, sy-vline,
  WA_ENHHOOKMIGRTEMP-IS_NOT_SAP, sy-vline,
  WA_ENHHOOKMIGRTEMP-INCLUDE, sy-vline,
  WA_ENHHOOKMIGRTEMP-INCLUDE_LINE, sy-vline,
  WA_ENHHOOKMIGRTEMP-INCLUDE_COLUMN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENHHOOKMIGRTEMP 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_ENHHOOKMIGRTEMP 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_ENHHOOKMIGRTEMP INTO WA_ENHHOOKMIGRTEMP.


*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_ENHHOOKMIGRTEMP_STR, 
ID TYPE STRING,
OLD_FULLNAME TYPE STRING,
NEW_FULLNAME TYPE STRING,
OVERWRITE TYPE STRING,
MAIN_TYPE TYPE STRING,
MAIN_NAME TYPE STRING,
MAIN_PROG TYPE STRING,
IS_NOT_SAP TYPE STRING,
INCLUDE TYPE STRING,
INCLUDE_LINE TYPE STRING,
INCLUDE_COLUMN TYPE STRING,
OLD_ENHSPOTNAME TYPE STRING,
NEW_ENHSPOTNAME TYPE STRING,
OLD_ENHNAME TYPE STRING,
NEW_ENHNAME TYPE STRING,
CREATEDBY TYPE STRING,
CREATEDON TYPE STRING,
CHANGEDBY TYPE STRING,
CHANGEDON TYPE STRING,
CREATE_SMODILOG TYPE STRING,
STATE TYPE STRING,
ERRMSGNR TYPE STRING,
ERRMSGID TYPE STRING,
ERRMSGV1 TYPE STRING,
ERRMSGV2 TYPE STRING,
ERRMSGV3 TYPE STRING,
ERRMSGV4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENHHOOKMIGRTEMP_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_ENHHOOKMIGRTEMP_STR-ID sy-vline 
WA_ENHHOOKMIGRTEMP_STR-OLD_FULLNAME sy-vline 
WA_ENHHOOKMIGRTEMP_STR-NEW_FULLNAME sy-vline 
WA_ENHHOOKMIGRTEMP_STR-OVERWRITE sy-vline 
WA_ENHHOOKMIGRTEMP_STR-MAIN_TYPE sy-vline 
WA_ENHHOOKMIGRTEMP_STR-MAIN_NAME sy-vline 
WA_ENHHOOKMIGRTEMP_STR-MAIN_PROG sy-vline 
WA_ENHHOOKMIGRTEMP_STR-IS_NOT_SAP sy-vline 
WA_ENHHOOKMIGRTEMP_STR-INCLUDE sy-vline 
WA_ENHHOOKMIGRTEMP_STR-INCLUDE_LINE sy-vline 
WA_ENHHOOKMIGRTEMP_STR-INCLUDE_COLUMN sy-vline 
WA_ENHHOOKMIGRTEMP_STR-OLD_ENHSPOTNAME sy-vline 
WA_ENHHOOKMIGRTEMP_STR-NEW_ENHSPOTNAME sy-vline 
WA_ENHHOOKMIGRTEMP_STR-OLD_ENHNAME sy-vline 
WA_ENHHOOKMIGRTEMP_STR-NEW_ENHNAME sy-vline 
WA_ENHHOOKMIGRTEMP_STR-CREATEDBY sy-vline 
WA_ENHHOOKMIGRTEMP_STR-CREATEDON sy-vline 
WA_ENHHOOKMIGRTEMP_STR-CHANGEDBY sy-vline 
WA_ENHHOOKMIGRTEMP_STR-CHANGEDON sy-vline 
WA_ENHHOOKMIGRTEMP_STR-CREATE_SMODILOG sy-vline 
WA_ENHHOOKMIGRTEMP_STR-STATE sy-vline 
WA_ENHHOOKMIGRTEMP_STR-ERRMSGNR sy-vline 
WA_ENHHOOKMIGRTEMP_STR-ERRMSGID sy-vline 
WA_ENHHOOKMIGRTEMP_STR-ERRMSGV1 sy-vline 
WA_ENHHOOKMIGRTEMP_STR-ERRMSGV2 sy-vline 
WA_ENHHOOKMIGRTEMP_STR-ERRMSGV3 sy-vline 
WA_ENHHOOKMIGRTEMP_STR-ERRMSGV4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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