ABAP Select data from SAP table E2KECR1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2KECR1 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 E2KECR1. 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 E2KECR1 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_E2KECR1 TYPE STANDARD TABLE OF E2KECR1,
      WA_E2KECR1 TYPE E2KECR1,
      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: <E2KECR1> TYPE E2KECR1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2KECR1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2KECR1
  INTO TABLE IT_E2KECR1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2KECR1
*  INTO TABLE @DATA(IT_E2KECR12).
*--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_E2KECR1 INDEX 1 INTO DATA(WA_E2KECR12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2KECR1 ASSIGNING <E2KECR1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2KECR1>-CRI001 = 1.
<E2KECR1>-CRI002 = 1.
<E2KECR1>-CRI003 = 1.
<E2KECR1>-CRI004 = 1.
<E2KECR1>-CRI005 = 1.

ENDLOOP.

LOOP AT IT_E2KECR1 INTO WA_E2KECR1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2KECR1-CRI006, sy-vline,
  WA_E2KECR1-CRI007, sy-vline,
  WA_E2KECR1-CRI008, sy-vline,
  WA_E2KECR1-CRI009, sy-vline,
  WA_E2KECR1-CRI010, sy-vline,
  WA_E2KECR1-CRI011, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2KECR1 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_E2KECR1 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_E2KECR1 INTO WA_E2KECR1.


*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_E2KECR1_STR, 
CRI001 TYPE STRING,
CRI002 TYPE STRING,
CRI003 TYPE STRING,
CRI004 TYPE STRING,
CRI005 TYPE STRING,
CRI006 TYPE STRING,
CRI007 TYPE STRING,
CRI008 TYPE STRING,
CRI009 TYPE STRING,
CRI010 TYPE STRING,
CRI011 TYPE STRING,
CRI012 TYPE STRING,
CRI013 TYPE STRING,
CRI014 TYPE STRING,
CRI015 TYPE STRING,
CRI016 TYPE STRING,
CRI017 TYPE STRING,
CRI018 TYPE STRING,
CRI019 TYPE STRING,
CRI020 TYPE STRING,
CRI021 TYPE STRING,
CRI022 TYPE STRING,
CRI023 TYPE STRING,
CRI024 TYPE STRING,
CRI025 TYPE STRING,
CRI026 TYPE STRING,
CRI027 TYPE STRING,
CRI028 TYPE STRING,
CRI029 TYPE STRING,
CRI030 TYPE STRING,
CRI031 TYPE STRING,
CRI032 TYPE STRING,
CRI033 TYPE STRING,
CRI034 TYPE STRING,
CRI035 TYPE STRING,
CRI036 TYPE STRING,
CRI037 TYPE STRING,
CRI038 TYPE STRING,
CRI039 TYPE STRING,
CRI040 TYPE STRING,
CRI041 TYPE STRING,
CRI042 TYPE STRING,
CRI043 TYPE STRING,
CRI044 TYPE STRING,
CRI045 TYPE STRING,
CRI046 TYPE STRING,
CRI047 TYPE STRING,
CRI048 TYPE STRING,
CRI049 TYPE STRING,
CRI050 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2KECR1_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_E2KECR1_STR-CRI001 sy-vline 
WA_E2KECR1_STR-CRI002 sy-vline 
WA_E2KECR1_STR-CRI003 sy-vline 
WA_E2KECR1_STR-CRI004 sy-vline 
WA_E2KECR1_STR-CRI005 sy-vline 
WA_E2KECR1_STR-CRI006 sy-vline 
WA_E2KECR1_STR-CRI007 sy-vline 
WA_E2KECR1_STR-CRI008 sy-vline 
WA_E2KECR1_STR-CRI009 sy-vline 
WA_E2KECR1_STR-CRI010 sy-vline 
WA_E2KECR1_STR-CRI011 sy-vline 
WA_E2KECR1_STR-CRI012 sy-vline 
WA_E2KECR1_STR-CRI013 sy-vline 
WA_E2KECR1_STR-CRI014 sy-vline 
WA_E2KECR1_STR-CRI015 sy-vline 
WA_E2KECR1_STR-CRI016 sy-vline 
WA_E2KECR1_STR-CRI017 sy-vline 
WA_E2KECR1_STR-CRI018 sy-vline 
WA_E2KECR1_STR-CRI019 sy-vline 
WA_E2KECR1_STR-CRI020 sy-vline 
WA_E2KECR1_STR-CRI021 sy-vline 
WA_E2KECR1_STR-CRI022 sy-vline 
WA_E2KECR1_STR-CRI023 sy-vline 
WA_E2KECR1_STR-CRI024 sy-vline 
WA_E2KECR1_STR-CRI025 sy-vline 
WA_E2KECR1_STR-CRI026 sy-vline 
WA_E2KECR1_STR-CRI027 sy-vline 
WA_E2KECR1_STR-CRI028 sy-vline 
WA_E2KECR1_STR-CRI029 sy-vline 
WA_E2KECR1_STR-CRI030 sy-vline 
WA_E2KECR1_STR-CRI031 sy-vline 
WA_E2KECR1_STR-CRI032 sy-vline 
WA_E2KECR1_STR-CRI033 sy-vline 
WA_E2KECR1_STR-CRI034 sy-vline 
WA_E2KECR1_STR-CRI035 sy-vline 
WA_E2KECR1_STR-CRI036 sy-vline 
WA_E2KECR1_STR-CRI037 sy-vline 
WA_E2KECR1_STR-CRI038 sy-vline 
WA_E2KECR1_STR-CRI039 sy-vline 
WA_E2KECR1_STR-CRI040 sy-vline 
WA_E2KECR1_STR-CRI041 sy-vline 
WA_E2KECR1_STR-CRI042 sy-vline 
WA_E2KECR1_STR-CRI043 sy-vline 
WA_E2KECR1_STR-CRI044 sy-vline 
WA_E2KECR1_STR-CRI045 sy-vline 
WA_E2KECR1_STR-CRI046 sy-vline 
WA_E2KECR1_STR-CRI047 sy-vline 
WA_E2KECR1_STR-CRI048 sy-vline 
WA_E2KECR1_STR-CRI049 sy-vline 
WA_E2KECR1_STR-CRI050 sy-vline      INTO ld_text SEPARATED BY SPACE.

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