ABAP Select data from SAP table EJVL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EJVL
*  INTO TABLE @DATA(IT_EJVL2).
*--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_EJVL INDEX 1 INTO DATA(WA_EJVL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EJVL>-MANDT = 1.
<EJVL>-OPBEL = 1.
<EJVL>-VERTRAG = 1.
<EJVL>-SPARTE = 1.
<EJVL>-BUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EJVL-WAERS, sy-vline,
  WA_EJVL-JVLBASIS, sy-vline,
  WA_EJVL-JVLBETR, sy-vline,
  WA_EJVL-JVLBETRTAX, sy-vline,
  WA_EJVL-JVLBONUS, sy-vline,
  WA_EJVL-JVLBONUSTAX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EJVL 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_EJVL 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_EJVL INTO WA_EJVL.


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

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

*Conversion exit ALPHA, internal->external for field ZINSZ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EJVL-ZINSZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EJVL-ZINSZ.
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_EJVL_STR, 
MANDT TYPE STRING,
OPBEL TYPE STRING,
VERTRAG TYPE STRING,
SPARTE TYPE STRING,
BUKRS TYPE STRING,
WAERS TYPE STRING,
JVLBASIS TYPE STRING,
JVLBETR TYPE STRING,
JVLBETRTAX TYPE STRING,
JVLBONUS TYPE STRING,
JVLBONUSTAX TYPE STRING,
MWSKZ TYPE STRING,
FAEDN TYPE STRING,
ZINSZ TYPE STRING,
JVLSTATUS TYPE STRING,
JVLTE TYPE STRING,
AKTIV TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
FDATE TYPE STRING,
TDATE TYPE STRING,
BON_HVORG TYPE STRING,
BON_TVORG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EJVL_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_EJVL_STR-MANDT sy-vline 
WA_EJVL_STR-OPBEL sy-vline 
WA_EJVL_STR-VERTRAG sy-vline 
WA_EJVL_STR-SPARTE sy-vline 
WA_EJVL_STR-BUKRS sy-vline 
WA_EJVL_STR-WAERS sy-vline 
WA_EJVL_STR-JVLBASIS sy-vline 
WA_EJVL_STR-JVLBETR sy-vline 
WA_EJVL_STR-JVLBETRTAX sy-vline 
WA_EJVL_STR-JVLBONUS sy-vline 
WA_EJVL_STR-JVLBONUSTAX sy-vline 
WA_EJVL_STR-MWSKZ sy-vline 
WA_EJVL_STR-FAEDN sy-vline 
WA_EJVL_STR-ZINSZ sy-vline 
WA_EJVL_STR-JVLSTATUS sy-vline 
WA_EJVL_STR-JVLTE sy-vline 
WA_EJVL_STR-AKTIV sy-vline 
WA_EJVL_STR-ERDAT sy-vline 
WA_EJVL_STR-ERNAM sy-vline 
WA_EJVL_STR-AEDAT sy-vline 
WA_EJVL_STR-AENAM sy-vline 
WA_EJVL_STR-FDATE sy-vline 
WA_EJVL_STR-TDATE sy-vline 
WA_EJVL_STR-BON_HVORG sy-vline 
WA_EJVL_STR-BON_TVORG sy-vline      INTO ld_text SEPARATED BY SPACE.

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