ABAP Select data from SAP table E3OILSA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E3OILSA 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 E3OILSA. 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 E3OILSA 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_E3OILSA TYPE STANDARD TABLE OF E3OILSA,
      WA_E3OILSA TYPE E3OILSA,
      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: <E3OILSA> TYPE E3OILSA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E3OILSA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E3OILSA
  INTO TABLE IT_E3OILSA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E3OILSA
*  INTO TABLE @DATA(IT_E3OILSA2).
*--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_E3OILSA INDEX 1 INTO DATA(WA_E3OILSA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E3OILSA ASSIGNING <E3OILSA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E3OILSA>-VBELN = 1.
<E3OILSA>-POSNR = 1.
<E3OILSA>-PARVW = 1.
<E3OILSA>-KUNNR = 1.
<E3OILSA>-LIFNR = 1.

ENDLOOP.

LOOP AT IT_E3OILSA INTO WA_E3OILSA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E3OILSA-PERNR, sy-vline,
  WA_E3OILSA-PARNR, sy-vline,
  WA_E3OILSA-ADRNR, sy-vline,
  WA_E3OILSA-ABLAD, sy-vline,
  WA_E3OILSA-LAND1, sy-vline,
  WA_E3OILSA-ADRDA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E3OILSA 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_E3OILSA 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_E3OILSA INTO WA_E3OILSA.


*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 VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3OILSA-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3OILSA-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PARVW, internal->external for field PARVW
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_E3OILSA-PARVW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3OILSA-PARVW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3OILSA-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3OILSA-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3OILSA-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3OILSA-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3OILSA-ADRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3OILSA-ADRNR.
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_E3OILSA_STR, 
VBELN TYPE STRING,
POSNR TYPE STRING,
PARVW TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
PERNR TYPE STRING,
PARNR TYPE STRING,
ADRNR TYPE STRING,
ABLAD TYPE STRING,
LAND1 TYPE STRING,
ADRDA TYPE STRING,
XCPDK TYPE STRING,
HITYP TYPE STRING,
PRFRE TYPE STRING,
BOKRE TYPE STRING,
HISTUNR TYPE STRING,
KNREF TYPE STRING,
LZONE TYPE STRING,
HZUOR TYPE STRING,
UPDATEFLAG TYPE STRING,
PA_LEVEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E3OILSA_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_E3OILSA_STR-VBELN sy-vline 
WA_E3OILSA_STR-POSNR sy-vline 
WA_E3OILSA_STR-PARVW sy-vline 
WA_E3OILSA_STR-KUNNR sy-vline 
WA_E3OILSA_STR-LIFNR sy-vline 
WA_E3OILSA_STR-PERNR sy-vline 
WA_E3OILSA_STR-PARNR sy-vline 
WA_E3OILSA_STR-ADRNR sy-vline 
WA_E3OILSA_STR-ABLAD sy-vline 
WA_E3OILSA_STR-LAND1 sy-vline 
WA_E3OILSA_STR-ADRDA sy-vline 
WA_E3OILSA_STR-XCPDK sy-vline 
WA_E3OILSA_STR-HITYP sy-vline 
WA_E3OILSA_STR-PRFRE sy-vline 
WA_E3OILSA_STR-BOKRE sy-vline 
WA_E3OILSA_STR-HISTUNR sy-vline 
WA_E3OILSA_STR-KNREF sy-vline 
WA_E3OILSA_STR-LZONE sy-vline 
WA_E3OILSA_STR-HZUOR sy-vline 
WA_E3OILSA_STR-UPDATEFLAG sy-vline 
WA_E3OILSA_STR-PA_LEVEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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