ABAP Select data from SAP table E1OILSQ into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1OILSQ 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 E1OILSQ. 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 E1OILSQ 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_E1OILSQ TYPE STANDARD TABLE OF E1OILSQ,
      WA_E1OILSQ TYPE E1OILSQ,
      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: <E1OILSQ> TYPE E1OILSQ.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1OILSQ.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1OILSQ
  INTO TABLE IT_E1OILSQ.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1OILSQ
*  INTO TABLE @DATA(IT_E1OILSQ2).
*--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_E1OILSQ INDEX 1 INTO DATA(WA_E1OILSQ2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1OILSQ ASSIGNING <E1OILSQ>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1OILSQ>-SEQ_NMBR = 1.
<E1OILSQ>-COM_NUMBER = 1.
<E1OILSQ>-TU_NUMBER = 1.
<E1OILSQ>-VEHICLE = 1.
<E1OILSQ>-TD_ACTION = 1.

ENDLOOP.

LOOP AT IT_E1OILSQ INTO WA_E1OILSQ.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1OILSQ-DOC_TYP, sy-vline,
  WA_E1OILSQ-BWTAR, sy-vline,
  WA_E1OILSQ-DOC_NUMBER, sy-vline,
  WA_E1OILSQ-MATNR, sy-vline,
  WA_E1OILSQ-CHARG, sy-vline,
  WA_E1OILSQ-POSNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1OILSQ 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_E1OILSQ 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_E1OILSQ INTO WA_E1OILSQ.


*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_E1OILSQ_STR, 
SEQ_NMBR TYPE STRING,
COM_NUMBER TYPE STRING,
TU_NUMBER TYPE STRING,
VEHICLE TYPE STRING,
TD_ACTION TYPE STRING,
DOC_TYP TYPE STRING,
BWTAR TYPE STRING,
DOC_NUMBER TYPE STRING,
MATNR TYPE STRING,
CHARG TYPE STRING,
POSNR TYPE STRING,
TRQTY TYPE STRING,
TRUOM TYPE STRING,
QTY_VOL TYPE STRING,
QTY_WGT TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
LFIMG TYPE STRING,
VRKME TYPE STRING,
LGMNG TYPE STRING,
MEINS TYPE STRING,
HPM_ITM TYPE STRING,
HIS_ITM TYPE STRING,
REAS_CODE TYPE STRING,
VGTYP TYPE STRING,
OIGROUPNAM TYPE STRING,
TSTMP TYPE STRING,
TSTEH TYPE STRING,
TDICH TYPE STRING,
MTTMP TYPE STRING,
MTTEH TYPE STRING,
BDICH TYPE STRING,
HYDRO TYPE STRING,
ABFAC TYPE STRING,
ABIND TYPE STRING,
UMRSL TYPE STRING,
CMODE TYPE STRING,
COEFF TYPE STRING,
FDICH TYPE STRING,
BSWCN TYPE STRING,
MCF TYPE STRING,
STATUS TYPE STRING,
UPDATEFLAG TYPE STRING,
M_TPU_NR TYPE STRING,
M_SEQ_NMBR TYPE STRING,
M_VEH_NR TYPE STRING,
SHITEM TYPE STRING,
MATNR_LONG TYPE STRING,
DOC_TYP_LONG TYPE STRING,
VGTYP_LONG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1OILSQ_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_E1OILSQ_STR-SEQ_NMBR sy-vline 
WA_E1OILSQ_STR-COM_NUMBER sy-vline 
WA_E1OILSQ_STR-TU_NUMBER sy-vline 
WA_E1OILSQ_STR-VEHICLE sy-vline 
WA_E1OILSQ_STR-TD_ACTION sy-vline 
WA_E1OILSQ_STR-DOC_TYP sy-vline 
WA_E1OILSQ_STR-BWTAR sy-vline 
WA_E1OILSQ_STR-DOC_NUMBER sy-vline 
WA_E1OILSQ_STR-MATNR sy-vline 
WA_E1OILSQ_STR-CHARG sy-vline 
WA_E1OILSQ_STR-POSNR sy-vline 
WA_E1OILSQ_STR-TRQTY sy-vline 
WA_E1OILSQ_STR-TRUOM sy-vline 
WA_E1OILSQ_STR-QTY_VOL sy-vline 
WA_E1OILSQ_STR-QTY_WGT sy-vline 
WA_E1OILSQ_STR-WERKS sy-vline 
WA_E1OILSQ_STR-LGORT sy-vline 
WA_E1OILSQ_STR-LFIMG sy-vline 
WA_E1OILSQ_STR-VRKME sy-vline 
WA_E1OILSQ_STR-LGMNG sy-vline 
WA_E1OILSQ_STR-MEINS sy-vline 
WA_E1OILSQ_STR-HPM_ITM sy-vline 
WA_E1OILSQ_STR-HIS_ITM sy-vline 
WA_E1OILSQ_STR-REAS_CODE sy-vline 
WA_E1OILSQ_STR-VGTYP sy-vline 
WA_E1OILSQ_STR-OIGROUPNAM sy-vline 
WA_E1OILSQ_STR-TSTMP sy-vline 
WA_E1OILSQ_STR-TSTEH sy-vline 
WA_E1OILSQ_STR-TDICH sy-vline 
WA_E1OILSQ_STR-MTTMP sy-vline 
WA_E1OILSQ_STR-MTTEH sy-vline 
WA_E1OILSQ_STR-BDICH sy-vline 
WA_E1OILSQ_STR-HYDRO sy-vline 
WA_E1OILSQ_STR-ABFAC sy-vline 
WA_E1OILSQ_STR-ABIND sy-vline 
WA_E1OILSQ_STR-UMRSL sy-vline 
WA_E1OILSQ_STR-CMODE sy-vline 
WA_E1OILSQ_STR-COEFF sy-vline 
WA_E1OILSQ_STR-FDICH sy-vline 
WA_E1OILSQ_STR-BSWCN sy-vline 
WA_E1OILSQ_STR-MCF sy-vline 
WA_E1OILSQ_STR-STATUS sy-vline 
WA_E1OILSQ_STR-UPDATEFLAG sy-vline 
WA_E1OILSQ_STR-M_TPU_NR sy-vline 
WA_E1OILSQ_STR-M_SEQ_NMBR sy-vline 
WA_E1OILSQ_STR-M_VEH_NR sy-vline 
WA_E1OILSQ_STR-SHITEM sy-vline 
WA_E1OILSQ_STR-MATNR_LONG sy-vline 
WA_E1OILSQ_STR-DOC_TYP_LONG sy-vline 
WA_E1OILSQ_STR-VGTYP_LONG sy-vline      INTO ld_text SEPARATED BY SPACE.

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