ABAP Select data from SAP table E2OILO1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2OILO1 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 E2OILO1. 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 E2OILO1 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_E2OILO1 TYPE STANDARD TABLE OF E2OILO1,
      WA_E2OILO1 TYPE E2OILO1,
      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: <E2OILO1> TYPE E2OILO1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2OILO1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2OILO1
  INTO TABLE IT_E2OILO1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2OILO1
*  INTO TABLE @DATA(IT_E2OILO12).
*--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_E2OILO1 INDEX 1 INTO DATA(WA_E2OILO12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2OILO1 ASSIGNING <E2OILO1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2OILO1>-POID = 1.
<E2OILO1>-POSNR = 1.
<E2OILO1>-MATNR = 1.
<E2OILO1>-TQUANT = 1.
<E2OILO1>-CONVFAK = 1.

ENDLOOP.

LOOP AT IT_E2OILO1 INTO WA_E2OILO1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2OILO1-SCAQUA, sy-vline,
  WA_E2OILO1-REDATE, sy-vline,
  WA_E2OILO1-QUANDEV, sy-vline,
  WA_E2OILO1-POITEM, sy-vline,
  WA_E2OILO1-RELDEV, sy-vline,
  WA_E2OILO1-DAYSHIFT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2OILO1 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_E2OILO1 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_E2OILO1 INTO WA_E2OILO1.


*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 POID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OILO1-POID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILO1-POID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_E2OILO1-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILO1-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field POITEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OILO1-POITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILO1-POITEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PROCENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OILO1-PROCENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILO1-PROCENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field PLMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_E2OILO1-PLMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILO1-PLMAT.
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_E2OILO1_STR, 
POID TYPE STRING,
POSNR TYPE STRING,
MATNR TYPE STRING,
TQUANT TYPE STRING,
CONVFAK TYPE STRING,
SCAQUA TYPE STRING,
REDATE TYPE STRING,
QUANDEV TYPE STRING,
POITEM TYPE STRING,
RELDEV TYPE STRING,
DAYSHIFT TYPE STRING,
FQIND TYPE STRING,
UOIND TYPE STRING,
ODTOLLI TYPE STRING,
UDTOLLI TYPE STRING,
NMBPD TYPE STRING,
PDIND TYPE STRING,
BSIND TYPE STRING,
COQUAN TYPE STRING,
CRDQUAN TYPE STRING,
CCQUANSU TYPE STRING,
CCQUANBU TYPE STRING,
SALUNIT TYPE STRING,
DELPRI TYPE STRING,
PLANT TYPE STRING,
STRLOC TYPE STRING,
SHPPNT TYPE STRING,
ROUTE TYPE STRING,
FSPT TYPE STRING,
VSPT TYPE STRING,
MINDQUAN TYPE STRING,
DDQIND TYPE STRING,
PROCENT TYPE STRING,
PLMAT TYPE STRING,
PLPLANT TYPE STRING,
REQTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2OILO1_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_E2OILO1_STR-POID sy-vline 
WA_E2OILO1_STR-POSNR sy-vline 
WA_E2OILO1_STR-MATNR sy-vline 
WA_E2OILO1_STR-TQUANT sy-vline 
WA_E2OILO1_STR-CONVFAK sy-vline 
WA_E2OILO1_STR-SCAQUA sy-vline 
WA_E2OILO1_STR-REDATE sy-vline 
WA_E2OILO1_STR-QUANDEV sy-vline 
WA_E2OILO1_STR-POITEM sy-vline 
WA_E2OILO1_STR-RELDEV sy-vline 
WA_E2OILO1_STR-DAYSHIFT sy-vline 
WA_E2OILO1_STR-FQIND sy-vline 
WA_E2OILO1_STR-UOIND sy-vline 
WA_E2OILO1_STR-ODTOLLI sy-vline 
WA_E2OILO1_STR-UDTOLLI sy-vline 
WA_E2OILO1_STR-NMBPD sy-vline 
WA_E2OILO1_STR-PDIND sy-vline 
WA_E2OILO1_STR-BSIND sy-vline 
WA_E2OILO1_STR-COQUAN sy-vline 
WA_E2OILO1_STR-CRDQUAN sy-vline 
WA_E2OILO1_STR-CCQUANSU sy-vline 
WA_E2OILO1_STR-CCQUANBU sy-vline 
WA_E2OILO1_STR-SALUNIT sy-vline 
WA_E2OILO1_STR-DELPRI sy-vline 
WA_E2OILO1_STR-PLANT sy-vline 
WA_E2OILO1_STR-STRLOC sy-vline 
WA_E2OILO1_STR-SHPPNT sy-vline 
WA_E2OILO1_STR-ROUTE sy-vline 
WA_E2OILO1_STR-FSPT sy-vline 
WA_E2OILO1_STR-VSPT sy-vline 
WA_E2OILO1_STR-MINDQUAN sy-vline 
WA_E2OILO1_STR-DDQIND sy-vline 
WA_E2OILO1_STR-PROCENT sy-vline 
WA_E2OILO1_STR-PLMAT sy-vline 
WA_E2OILO1_STR-PLPLANT sy-vline 
WA_E2OILO1_STR-REQTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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