ABAP Select data from SAP table E2OILFQ into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2OILFQ 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 E2OILFQ. 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 E2OILFQ 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_E2OILFQ TYPE STANDARD TABLE OF E2OILFQ,
      WA_E2OILFQ TYPE E2OILFQ,
      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: <E2OILFQ> TYPE E2OILFQ.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2OILFQ.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2OILFQ
  INTO TABLE IT_E2OILFQ.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2OILFQ
*  INTO TABLE @DATA(IT_E2OILFQ2).
*--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_E2OILFQ INDEX 1 INTO DATA(WA_E2OILFQ2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2OILFQ ASSIGNING <E2OILFQ>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2OILFQ>-LD_ITM = 1.
<E2OILFQ>-VEH_NR = 1.
<E2OILFQ>-L_SHITEM = 1.
<E2OILFQ>-L_POSNR = 1.
<E2OILFQ>-D_SHITEM = 1.

ENDLOOP.

LOOP AT IT_E2OILFQ INTO WA_E2OILFQ.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2OILFQ-D_POSNR, sy-vline,
  WA_E2OILFQ-MAT_ITM, sy-vline,
  WA_E2OILFQ-QUANTYPE, sy-vline,
  WA_E2OILFQ-QTY_VOL, sy-vline,
  WA_E2OILFQ-QTY_VLN, sy-vline,
  WA_E2OILFQ-QTY_WGT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2OILFQ 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_E2OILFQ 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_E2OILFQ INTO WA_E2OILFQ.


*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 D_DOC_NUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OILFQ-D_DOC_NUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILFQ-D_DOC_NUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field L_DOC_NUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OILFQ-L_DOC_NUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILFQ-L_DOC_NUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_E2OILFQ-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILFQ-MATNR.
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_E2OILFQ_STR, 
LD_ITM TYPE STRING,
VEH_NR TYPE STRING,
L_SHITEM TYPE STRING,
L_POSNR TYPE STRING,
D_SHITEM TYPE STRING,
D_POSNR TYPE STRING,
MAT_ITM TYPE STRING,
QUANTYPE TYPE STRING,
QTY_VOL TYPE STRING,
QTY_VLN TYPE STRING,
QTY_WGT TYPE STRING,
SCLDTYPE TYPE STRING,
FIFO_IND TYPE STRING,
MANC_IND TYPE STRING,
GLCH_IND TYPE STRING,
TSNUMA TYPE STRING,
TSRFOA TYPE STRING,
TSNUMZ TYPE STRING,
TSRFOZ TYPE STRING,
D_DOC_NUM TYPE STRING,
D_DOC_TYP TYPE STRING,
L_DOC_NUM TYPE STRING,
L_DOC_TYP TYPE STRING,
QTY_VOL_C TYPE STRING,
MATNR TYPE STRING,
KNOTA TYPE STRING,
KNOTZ TYPE STRING,
VOLC_UOM TYPE STRING,
UPDATEFLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2OILFQ_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_E2OILFQ_STR-LD_ITM sy-vline 
WA_E2OILFQ_STR-VEH_NR sy-vline 
WA_E2OILFQ_STR-L_SHITEM sy-vline 
WA_E2OILFQ_STR-L_POSNR sy-vline 
WA_E2OILFQ_STR-D_SHITEM sy-vline 
WA_E2OILFQ_STR-D_POSNR sy-vline 
WA_E2OILFQ_STR-MAT_ITM sy-vline 
WA_E2OILFQ_STR-QUANTYPE sy-vline 
WA_E2OILFQ_STR-QTY_VOL sy-vline 
WA_E2OILFQ_STR-QTY_VLN sy-vline 
WA_E2OILFQ_STR-QTY_WGT sy-vline 
WA_E2OILFQ_STR-SCLDTYPE sy-vline 
WA_E2OILFQ_STR-FIFO_IND sy-vline 
WA_E2OILFQ_STR-MANC_IND sy-vline 
WA_E2OILFQ_STR-GLCH_IND sy-vline 
WA_E2OILFQ_STR-TSNUMA sy-vline 
WA_E2OILFQ_STR-TSRFOA sy-vline 
WA_E2OILFQ_STR-TSNUMZ sy-vline 
WA_E2OILFQ_STR-TSRFOZ sy-vline 
WA_E2OILFQ_STR-D_DOC_NUM sy-vline 
WA_E2OILFQ_STR-D_DOC_TYP sy-vline 
WA_E2OILFQ_STR-L_DOC_NUM sy-vline 
WA_E2OILFQ_STR-L_DOC_TYP sy-vline 
WA_E2OILFQ_STR-QTY_VOL_C sy-vline 
WA_E2OILFQ_STR-MATNR sy-vline 
WA_E2OILFQ_STR-KNOTA sy-vline 
WA_E2OILFQ_STR-KNOTZ sy-vline 
WA_E2OILFQ_STR-VOLC_UOM sy-vline 
WA_E2OILFQ_STR-UPDATEFLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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