ABAP Select data from SAP table E1FIXWT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1FIXWT 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 E1FIXWT. 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 E1FIXWT 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_E1FIXWT TYPE STANDARD TABLE OF E1FIXWT,
      WA_E1FIXWT TYPE E1FIXWT,
      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: <E1FIXWT> TYPE E1FIXWT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1FIXWT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1FIXWT
  INTO TABLE IT_E1FIXWT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1FIXWT
*  INTO TABLE @DATA(IT_E1FIXWT2).
*--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_E1FIXWT INDEX 1 INTO DATA(WA_E1FIXWT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1FIXWT ASSIGNING <E1FIXWT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1FIXWT>-WT_KEY = 1.
<E1FIXWT>-WITHT = 1.
<E1FIXWT>-WT_WITHCD = 1.
<E1FIXWT>-WT_QSSHH = 1.
<E1FIXWT>-WT_QSSHB = 1.

ENDLOOP.

LOOP AT IT_E1FIXWT INTO WA_E1FIXWT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1FIXWT-WT_QSSH2, sy-vline,
  WA_E1FIXWT-WT_QSSH3, sy-vline,
  WA_E1FIXWT-WT_QBUIHH, sy-vline,
  WA_E1FIXWT-WT_QBUIHB, sy-vline,
  WA_E1FIXWT-WT_QBUIH2, sy-vline,
  WA_E1FIXWT-WT_QBUIH3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1FIXWT 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_E1FIXWT 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_E1FIXWT INTO WA_E1FIXWT.


*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_E1FIXWT_STR, 
WT_KEY TYPE STRING,
WITHT TYPE STRING,
WT_WITHCD TYPE STRING,
WT_QSSHH TYPE STRING,
WT_QSSHB TYPE STRING,
WT_QSSH2 TYPE STRING,
WT_QSSH3 TYPE STRING,
WT_QBUIHH TYPE STRING,
WT_QBUIHB TYPE STRING,
WT_QBUIH2 TYPE STRING,
WT_QBUIH3 TYPE STRING,
WT_WDMBTR TYPE STRING,
WT_WWRBTR TYPE STRING,
WT_WDMBT2 TYPE STRING,
WT_WDMBT3 TYPE STRING,
RESERVE TYPE STRING,
BUZEI TYPE STRING,
WT_BASMAN TYPE STRING,
WT_QSSHHC TYPE STRING,
WT_QSSHBC TYPE STRING,
WT_QSSH2C TYPE STRING,
WT_QSSH3C TYPE STRING,
WT_QBSHH TYPE STRING,
WT_QBSHB TYPE STRING,
WT_QBSH2 TYPE STRING,
WT_QBSH3 TYPE STRING,
WT_AMNMAN TYPE STRING,
WT_QBSHHA TYPE STRING,
WT_QBSHHB TYPE STRING,
WT_STAT TYPE STRING,
WT_QSFHH TYPE STRING,
WT_QSFHB TYPE STRING,
WT_QSFH2 TYPE STRING,
WT_QSFH3 TYPE STRING,
WT_WTEXMN TYPE STRING,
KOART TYPE STRING,
WT_ACCO TYPE STRING,
HKONT TYPE STRING,
HKONT_OPP TYPE STRING,
QSREC TYPE STRING,
AUGBL TYPE STRING,
WT_QSZRT TYPE STRING,
TEXT15 TYPE STRING,
WT_ACCBS TYPE STRING,
WT_ACCWT TYPE STRING,
WT_ACCWTA TYPE STRING,
WT_ACCWTHA TYPE STRING,
WT_ACCBS1 TYPE STRING,
WT_ACCWT1 TYPE STRING,
WT_ACCWTA1 TYPE STRING,
WT_ACCWTHA1 TYPE STRING,
WT_ACCBS2 TYPE STRING,
WT_ACCWT2 TYPE STRING,
WT_ACCWTA2 TYPE STRING,
WT_ACCWTHA2 TYPE STRING,
QSATZ TYPE STRING,
WT_SLFWTPD TYPE STRING,
WT_GRUWTPD TYPE STRING,
WT_OPOWTPD TYPE STRING,
WT_GIVENPD TYPE STRING,
CTNUMBER TYPE STRING,
WT_DOWNC TYPE STRING,
WT_RESITEM TYPE STRING,
CTISSUEDATE TYPE STRING,
WT_CALC TYPE STRING,
WT_LOGSYS TYPE STRING,
RESERVE02 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1FIXWT_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_E1FIXWT_STR-WT_KEY sy-vline 
WA_E1FIXWT_STR-WITHT sy-vline 
WA_E1FIXWT_STR-WT_WITHCD sy-vline 
WA_E1FIXWT_STR-WT_QSSHH sy-vline 
WA_E1FIXWT_STR-WT_QSSHB sy-vline 
WA_E1FIXWT_STR-WT_QSSH2 sy-vline 
WA_E1FIXWT_STR-WT_QSSH3 sy-vline 
WA_E1FIXWT_STR-WT_QBUIHH sy-vline 
WA_E1FIXWT_STR-WT_QBUIHB sy-vline 
WA_E1FIXWT_STR-WT_QBUIH2 sy-vline 
WA_E1FIXWT_STR-WT_QBUIH3 sy-vline 
WA_E1FIXWT_STR-WT_WDMBTR sy-vline 
WA_E1FIXWT_STR-WT_WWRBTR sy-vline 
WA_E1FIXWT_STR-WT_WDMBT2 sy-vline 
WA_E1FIXWT_STR-WT_WDMBT3 sy-vline 
WA_E1FIXWT_STR-RESERVE sy-vline 
WA_E1FIXWT_STR-BUZEI sy-vline 
WA_E1FIXWT_STR-WT_BASMAN sy-vline 
WA_E1FIXWT_STR-WT_QSSHHC sy-vline 
WA_E1FIXWT_STR-WT_QSSHBC sy-vline 
WA_E1FIXWT_STR-WT_QSSH2C sy-vline 
WA_E1FIXWT_STR-WT_QSSH3C sy-vline 
WA_E1FIXWT_STR-WT_QBSHH sy-vline 
WA_E1FIXWT_STR-WT_QBSHB sy-vline 
WA_E1FIXWT_STR-WT_QBSH2 sy-vline 
WA_E1FIXWT_STR-WT_QBSH3 sy-vline 
WA_E1FIXWT_STR-WT_AMNMAN sy-vline 
WA_E1FIXWT_STR-WT_QBSHHA sy-vline 
WA_E1FIXWT_STR-WT_QBSHHB sy-vline 
WA_E1FIXWT_STR-WT_STAT sy-vline 
WA_E1FIXWT_STR-WT_QSFHH sy-vline 
WA_E1FIXWT_STR-WT_QSFHB sy-vline 
WA_E1FIXWT_STR-WT_QSFH2 sy-vline 
WA_E1FIXWT_STR-WT_QSFH3 sy-vline 
WA_E1FIXWT_STR-WT_WTEXMN sy-vline 
WA_E1FIXWT_STR-KOART sy-vline 
WA_E1FIXWT_STR-WT_ACCO sy-vline 
WA_E1FIXWT_STR-HKONT sy-vline 
WA_E1FIXWT_STR-HKONT_OPP sy-vline 
WA_E1FIXWT_STR-QSREC sy-vline 
WA_E1FIXWT_STR-AUGBL sy-vline 
WA_E1FIXWT_STR-WT_QSZRT sy-vline 
WA_E1FIXWT_STR-TEXT15 sy-vline 
WA_E1FIXWT_STR-WT_ACCBS sy-vline 
WA_E1FIXWT_STR-WT_ACCWT sy-vline 
WA_E1FIXWT_STR-WT_ACCWTA sy-vline 
WA_E1FIXWT_STR-WT_ACCWTHA sy-vline 
WA_E1FIXWT_STR-WT_ACCBS1 sy-vline 
WA_E1FIXWT_STR-WT_ACCWT1 sy-vline 
WA_E1FIXWT_STR-WT_ACCWTA1 sy-vline 
WA_E1FIXWT_STR-WT_ACCWTHA1 sy-vline 
WA_E1FIXWT_STR-WT_ACCBS2 sy-vline 
WA_E1FIXWT_STR-WT_ACCWT2 sy-vline 
WA_E1FIXWT_STR-WT_ACCWTA2 sy-vline 
WA_E1FIXWT_STR-WT_ACCWTHA2 sy-vline 
WA_E1FIXWT_STR-QSATZ sy-vline 
WA_E1FIXWT_STR-WT_SLFWTPD sy-vline 
WA_E1FIXWT_STR-WT_GRUWTPD sy-vline 
WA_E1FIXWT_STR-WT_OPOWTPD sy-vline 
WA_E1FIXWT_STR-WT_GIVENPD sy-vline 
WA_E1FIXWT_STR-CTNUMBER sy-vline 
WA_E1FIXWT_STR-WT_DOWNC sy-vline 
WA_E1FIXWT_STR-WT_RESITEM sy-vline 
WA_E1FIXWT_STR-CTISSUEDATE sy-vline 
WA_E1FIXWT_STR-WT_CALC sy-vline 
WA_E1FIXWT_STR-WT_LOGSYS sy-vline 
WA_E1FIXWT_STR-RESERVE02 sy-vline      INTO ld_text SEPARATED BY SPACE.

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