ABAP Select data from SAP table EEINV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EEINV
*  INTO TABLE @DATA(IT_EEINV2).
*--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_EEINV INDEX 1 INTO DATA(WA_EEINV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EEINV>-MANDT = 1.
<EEINV>-EINZBELEG = 1.
<EEINV>-VERTRAG = 1.
<EEINV>-ANLAGE = 1.
<EEINV>-VSTELLE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EEINV-EINZDAT, sy-vline,
  WA_EEINV-STORNOKZ, sy-vline,
  WA_EEINV-KEINABLBEL, sy-vline,
  WA_EEINV-BCHECKED, sy-vline,
  WA_EEINV-ABSOPBEL, sy-vline,
  WA_EEINV-ABSBETRW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EEINV 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_EEINV 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_EEINV INTO WA_EEINV.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field TRANSVER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EEINV-TRANSVER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EEINV-TRANSVER.
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_EEINV_STR, 
MANDT TYPE STRING,
EINZBELEG TYPE STRING,
VERTRAG TYPE STRING,
ANLAGE TYPE STRING,
VSTELLE TYPE STRING,
EINZDAT TYPE STRING,
STORNOKZ TYPE STRING,
KEINABLBEL TYPE STRING,
BCHECKED TYPE STRING,
ABSOPBEL TYPE STRING,
ABSBETRW TYPE STRING,
WAERS TYPE STRING,
ABSZYK TYPE STRING,
ABSDIFFKZ TYPE STRING,
ABSAUT TYPE STRING,
BBPTRANS TYPE STRING,
BBP_FORCE TYPE STRING,
SECAUT TYPE STRING,
SECWAIVEREAS TYPE STRING,
STARTFEEAUT TYPE STRING,
SECTRANS TYPE STRING,
SECTRANSOPBEL TYPE STRING,
XVERA TYPE STRING,
AUTEIGEINZ TYPE STRING,
KZSONDEINZ TYPE STRING,
TRANSVER TYPE STRING,
CHGID_C TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EEINV_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_EEINV_STR-MANDT sy-vline 
WA_EEINV_STR-EINZBELEG sy-vline 
WA_EEINV_STR-VERTRAG sy-vline 
WA_EEINV_STR-ANLAGE sy-vline 
WA_EEINV_STR-VSTELLE sy-vline 
WA_EEINV_STR-EINZDAT sy-vline 
WA_EEINV_STR-STORNOKZ sy-vline 
WA_EEINV_STR-KEINABLBEL sy-vline 
WA_EEINV_STR-BCHECKED sy-vline 
WA_EEINV_STR-ABSOPBEL sy-vline 
WA_EEINV_STR-ABSBETRW sy-vline 
WA_EEINV_STR-WAERS sy-vline 
WA_EEINV_STR-ABSZYK sy-vline 
WA_EEINV_STR-ABSDIFFKZ sy-vline 
WA_EEINV_STR-ABSAUT sy-vline 
WA_EEINV_STR-BBPTRANS sy-vline 
WA_EEINV_STR-BBP_FORCE sy-vline 
WA_EEINV_STR-SECAUT sy-vline 
WA_EEINV_STR-SECWAIVEREAS sy-vline 
WA_EEINV_STR-STARTFEEAUT sy-vline 
WA_EEINV_STR-SECTRANS sy-vline 
WA_EEINV_STR-SECTRANSOPBEL sy-vline 
WA_EEINV_STR-XVERA sy-vline 
WA_EEINV_STR-AUTEIGEINZ sy-vline 
WA_EEINV_STR-KZSONDEINZ sy-vline 
WA_EEINV_STR-TRANSVER sy-vline 
WA_EEINV_STR-CHGID_C sy-vline      INTO ld_text SEPARATED BY SPACE.

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