ABAP Select data from SAP table E2OILSE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2OILSE 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 E2OILSE. 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 E2OILSE 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_E2OILSE TYPE STANDARD TABLE OF E2OILSE,
      WA_E2OILSE TYPE E2OILSE,
      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: <E2OILSE> TYPE E2OILSE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2OILSE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2OILSE
  INTO TABLE IT_E2OILSE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2OILSE
*  INTO TABLE @DATA(IT_E2OILSE2).
*--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_E2OILSE INDEX 1 INTO DATA(WA_E2OILSE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2OILSE ASSIGNING <E2OILSE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2OILSE>-EVENT_NR = 1.
<E2OILSE>-TYPE = 1.
<E2OILSE>-DOC_TYPE = 1.
<E2OILSE>-EV_SEQ = 1.
<E2OILSE>-DOC_NUMBER = 1.

ENDLOOP.

LOOP AT IT_E2OILSE INTO WA_E2OILSE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2OILSE-SHITEM, sy-vline,
  WA_E2OILSE-STATUS, sy-vline,
  WA_E2OILSE-PSTDTF, sy-vline,
  WA_E2OILSE-PSTTMF, sy-vline,
  WA_E2OILSE-PSTDTT, sy-vline,
  WA_E2OILSE-PSTTMT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2OILSE 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_E2OILSE 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_E2OILSE INTO WA_E2OILSE.


*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 EV_SEQ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OILSE-EV_SEQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILSE-EV_SEQ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOC_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OILSE-DOC_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILSE-DOC_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SI_DOC_NR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OILSE-SI_DOC_NR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILSE-SI_DOC_NR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VHLNMR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OILSE-VHLNMR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILSE-VHLNMR.
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_E2OILSE_STR, 
EVENT_NR TYPE STRING,
TYPE TYPE STRING,
DOC_TYPE TYPE STRING,
EV_SEQ TYPE STRING,
DOC_NUMBER TYPE STRING,
SHITEM TYPE STRING,
STATUS TYPE STRING,
PSTDTF TYPE STRING,
PSTTMF TYPE STRING,
PSTDTT TYPE STRING,
PSTTMT TYPE STRING,
PEDDTF TYPE STRING,
PEDTMF TYPE STRING,
PEDDTT TYPE STRING,
PEDTMT TYPE STRING,
ASTDTF TYPE STRING,
ASTTMF TYPE STRING,
ASTDTT TYPE STRING,
ASTTMT TYPE STRING,
AEDDTF TYPE STRING,
AEDTMF TYPE STRING,
AEDDTT TYPE STRING,
AEDTMT TYPE STRING,
DEFAULTED TYPE STRING,
TSRFO TYPE STRING,
SI_DOC_TYP TYPE STRING,
STATUSTEXT TYPE STRING,
LONGTEXT TYPE STRING,
SI_DOC_NR TYPE STRING,
UPDATEFLAG TYPE STRING,
TYPETEXT TYPE STRING,
EV_TEXT TYPE STRING,
DOC_ASGN TYPE STRING,
VEH_ASGN TYPE STRING,
VHLNMR TYPE STRING,
SI_ASGN TYPE STRING,
CHECKBOX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2OILSE_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_E2OILSE_STR-EVENT_NR sy-vline 
WA_E2OILSE_STR-TYPE sy-vline 
WA_E2OILSE_STR-DOC_TYPE sy-vline 
WA_E2OILSE_STR-EV_SEQ sy-vline 
WA_E2OILSE_STR-DOC_NUMBER sy-vline 
WA_E2OILSE_STR-SHITEM sy-vline 
WA_E2OILSE_STR-STATUS sy-vline 
WA_E2OILSE_STR-PSTDTF sy-vline 
WA_E2OILSE_STR-PSTTMF sy-vline 
WA_E2OILSE_STR-PSTDTT sy-vline 
WA_E2OILSE_STR-PSTTMT sy-vline 
WA_E2OILSE_STR-PEDDTF sy-vline 
WA_E2OILSE_STR-PEDTMF sy-vline 
WA_E2OILSE_STR-PEDDTT sy-vline 
WA_E2OILSE_STR-PEDTMT sy-vline 
WA_E2OILSE_STR-ASTDTF sy-vline 
WA_E2OILSE_STR-ASTTMF sy-vline 
WA_E2OILSE_STR-ASTDTT sy-vline 
WA_E2OILSE_STR-ASTTMT sy-vline 
WA_E2OILSE_STR-AEDDTF sy-vline 
WA_E2OILSE_STR-AEDTMF sy-vline 
WA_E2OILSE_STR-AEDDTT sy-vline 
WA_E2OILSE_STR-AEDTMT sy-vline 
WA_E2OILSE_STR-DEFAULTED sy-vline 
WA_E2OILSE_STR-TSRFO sy-vline 
WA_E2OILSE_STR-SI_DOC_TYP sy-vline 
WA_E2OILSE_STR-STATUSTEXT sy-vline 
WA_E2OILSE_STR-LONGTEXT sy-vline 
WA_E2OILSE_STR-SI_DOC_NR sy-vline 
WA_E2OILSE_STR-UPDATEFLAG sy-vline 
WA_E2OILSE_STR-TYPETEXT sy-vline 
WA_E2OILSE_STR-EV_TEXT sy-vline 
WA_E2OILSE_STR-DOC_ASGN sy-vline 
WA_E2OILSE_STR-VEH_ASGN sy-vline 
WA_E2OILSE_STR-VHLNMR sy-vline 
WA_E2OILSE_STR-SI_ASGN sy-vline 
WA_E2OILSE_STR-CHECKBOX sy-vline      INTO ld_text SEPARATED BY SPACE.

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