ABAP Select data from SAP table E2KECR2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2KECR2 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 E2KECR2. 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 E2KECR2 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_E2KECR2 TYPE STANDARD TABLE OF E2KECR2,
      WA_E2KECR2 TYPE E2KECR2,
      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: <E2KECR2> TYPE E2KECR2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2KECR2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2KECR2
  INTO TABLE IT_E2KECR2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2KECR2
*  INTO TABLE @DATA(IT_E2KECR22).
*--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_E2KECR2 INDEX 1 INTO DATA(WA_E2KECR22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2KECR2 ASSIGNING <E2KECR2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2KECR2>-CRI051 = 1.
<E2KECR2>-CRI052 = 1.
<E2KECR2>-CRI053 = 1.
<E2KECR2>-CRI054 = 1.
<E2KECR2>-CRI055 = 1.

ENDLOOP.

LOOP AT IT_E2KECR2 INTO WA_E2KECR2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2KECR2-CRI056, sy-vline,
  WA_E2KECR2-CRI057, sy-vline,
  WA_E2KECR2-CRI058, sy-vline,
  WA_E2KECR2-CRI059, sy-vline,
  WA_E2KECR2-CRI060, sy-vline,
  WA_E2KECR2-CRI061, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2KECR2 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_E2KECR2 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_E2KECR2 INTO WA_E2KECR2.


*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_E2KECR2_STR, 
CRI051 TYPE STRING,
CRI052 TYPE STRING,
CRI053 TYPE STRING,
CRI054 TYPE STRING,
CRI055 TYPE STRING,
CRI056 TYPE STRING,
CRI057 TYPE STRING,
CRI058 TYPE STRING,
CRI059 TYPE STRING,
CRI060 TYPE STRING,
CRI061 TYPE STRING,
CRI062 TYPE STRING,
CRI063 TYPE STRING,
CRI064 TYPE STRING,
CRI065 TYPE STRING,
CRI066 TYPE STRING,
CRI067 TYPE STRING,
CRI068 TYPE STRING,
CRI069 TYPE STRING,
CRI070 TYPE STRING,
CRI071 TYPE STRING,
CRI072 TYPE STRING,
CRI073 TYPE STRING,
CRI074 TYPE STRING,
CRI075 TYPE STRING,
CRI076 TYPE STRING,
CRI077 TYPE STRING,
CRI078 TYPE STRING,
CRI079 TYPE STRING,
CRI080 TYPE STRING,
CRI081 TYPE STRING,
CRI082 TYPE STRING,
CRI083 TYPE STRING,
CRI084 TYPE STRING,
CRI085 TYPE STRING,
CRI086 TYPE STRING,
CRI087 TYPE STRING,
CRI088 TYPE STRING,
CRI089 TYPE STRING,
CRI090 TYPE STRING,
CRI091 TYPE STRING,
CRI092 TYPE STRING,
CRI093 TYPE STRING,
CRI094 TYPE STRING,
CRI095 TYPE STRING,
CRI096 TYPE STRING,
CRI097 TYPE STRING,
CRI098 TYPE STRING,
CRI099 TYPE STRING,
CRI100 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2KECR2_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_E2KECR2_STR-CRI051 sy-vline 
WA_E2KECR2_STR-CRI052 sy-vline 
WA_E2KECR2_STR-CRI053 sy-vline 
WA_E2KECR2_STR-CRI054 sy-vline 
WA_E2KECR2_STR-CRI055 sy-vline 
WA_E2KECR2_STR-CRI056 sy-vline 
WA_E2KECR2_STR-CRI057 sy-vline 
WA_E2KECR2_STR-CRI058 sy-vline 
WA_E2KECR2_STR-CRI059 sy-vline 
WA_E2KECR2_STR-CRI060 sy-vline 
WA_E2KECR2_STR-CRI061 sy-vline 
WA_E2KECR2_STR-CRI062 sy-vline 
WA_E2KECR2_STR-CRI063 sy-vline 
WA_E2KECR2_STR-CRI064 sy-vline 
WA_E2KECR2_STR-CRI065 sy-vline 
WA_E2KECR2_STR-CRI066 sy-vline 
WA_E2KECR2_STR-CRI067 sy-vline 
WA_E2KECR2_STR-CRI068 sy-vline 
WA_E2KECR2_STR-CRI069 sy-vline 
WA_E2KECR2_STR-CRI070 sy-vline 
WA_E2KECR2_STR-CRI071 sy-vline 
WA_E2KECR2_STR-CRI072 sy-vline 
WA_E2KECR2_STR-CRI073 sy-vline 
WA_E2KECR2_STR-CRI074 sy-vline 
WA_E2KECR2_STR-CRI075 sy-vline 
WA_E2KECR2_STR-CRI076 sy-vline 
WA_E2KECR2_STR-CRI077 sy-vline 
WA_E2KECR2_STR-CRI078 sy-vline 
WA_E2KECR2_STR-CRI079 sy-vline 
WA_E2KECR2_STR-CRI080 sy-vline 
WA_E2KECR2_STR-CRI081 sy-vline 
WA_E2KECR2_STR-CRI082 sy-vline 
WA_E2KECR2_STR-CRI083 sy-vline 
WA_E2KECR2_STR-CRI084 sy-vline 
WA_E2KECR2_STR-CRI085 sy-vline 
WA_E2KECR2_STR-CRI086 sy-vline 
WA_E2KECR2_STR-CRI087 sy-vline 
WA_E2KECR2_STR-CRI088 sy-vline 
WA_E2KECR2_STR-CRI089 sy-vline 
WA_E2KECR2_STR-CRI090 sy-vline 
WA_E2KECR2_STR-CRI091 sy-vline 
WA_E2KECR2_STR-CRI092 sy-vline 
WA_E2KECR2_STR-CRI093 sy-vline 
WA_E2KECR2_STR-CRI094 sy-vline 
WA_E2KECR2_STR-CRI095 sy-vline 
WA_E2KECR2_STR-CRI096 sy-vline 
WA_E2KECR2_STR-CRI097 sy-vline 
WA_E2KECR2_STR-CRI098 sy-vline 
WA_E2KECR2_STR-CRI099 sy-vline 
WA_E2KECR2_STR-CRI100 sy-vline      INTO ld_text SEPARATED BY SPACE.

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