ABAP Select data from SAP table EABL_ALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EABL_ALV
*  INTO TABLE @DATA(IT_EABL_ALV2).
*--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_EABL_ALV INDEX 1 INTO DATA(WA_EABL_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EABL_ALV>-SELECTED = 1.
<EABL_ALV>-VSTELLE = 1.
<EABL_ALV>-MATNR = 1.
<EABL_ALV>-GERNR = 1.
<EABL_ALV>-ZWNUMMER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EABL_ALV-ZWSTAND, sy-vline,
  WA_EABL_ALV-ADATENTRY, sy-vline,
  WA_EABL_ALV-ATIMENTRY, sy-vline,
  WA_EABL_ALV-STANZVOR, sy-vline,
  WA_EABL_ALV-STANZNAC, sy-vline,
  WA_EABL_ALV-AKTIV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EABL_ALV 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_EABL_ALV 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_EABL_ALV INTO WA_EABL_ALV.


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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_EABL_ALV-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EABL_ALV-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field GERNR
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_EABL_ALV-GERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EABL_ALV-GERNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit HH_MM, internal->external for field ATIMENTRY
CALL FUNCTION 'CONVERSION_EXIT_HH_MM_OUTPUT'
  EXPORTING
    input =                      WA_EABL_ALV-ATIMENTRY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EABL_ALV-ATIMENTRY.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit HH_MM, internal->external for field ATIM
CALL FUNCTION 'CONVERSION_EXIT_HH_MM_OUTPUT'
  EXPORTING
    input =                      WA_EABL_ALV-ATIM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EABL_ALV-ATIM.
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_EABL_ALV_STR, 
SELECTED TYPE STRING,
VSTELLE TYPE STRING,
MATNR TYPE STRING,
GERNR TYPE STRING,
ZWNUMMER TYPE STRING,
ZWSTAND TYPE STRING,
ADATENTRY TYPE STRING,
ATIMENTRY TYPE STRING,
STANZVOR TYPE STRING,
STANZNAC TYPE STRING,
AKTIV TYPE STRING,
ABLSTAT TYPE STRING,
PRUEFPKT TYPE STRING,
POPCODE TYPE STRING,
ABLHINW TYPE STRING,
STABLHW TYPE STRING,
ABLESART TYPE STRING,
ISTABLART TYPE STRING,
ABLESER TYPE STRING,
MDENR TYPE STRING,
SM_AUFNR TYPE STRING,
ADATERZ TYPE STRING,
ARBAUF TYPE STRING,
ANLAGE TYPE STRING,
ABLESGR TYPE STRING,
ABLEINH TYPE STRING,
TARIFTYP TYPE STRING,
EQUNR TYPE STRING,
ABLBELNR TYPE STRING,
ADAT TYPE STRING,
ATIM TYPE STRING,
AMS TYPE STRING,
TRANSSTAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EABL_ALV_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_EABL_ALV_STR-SELECTED sy-vline 
WA_EABL_ALV_STR-VSTELLE sy-vline 
WA_EABL_ALV_STR-MATNR sy-vline 
WA_EABL_ALV_STR-GERNR sy-vline 
WA_EABL_ALV_STR-ZWNUMMER sy-vline 
WA_EABL_ALV_STR-ZWSTAND sy-vline 
WA_EABL_ALV_STR-ADATENTRY sy-vline 
WA_EABL_ALV_STR-ATIMENTRY sy-vline 
WA_EABL_ALV_STR-STANZVOR sy-vline 
WA_EABL_ALV_STR-STANZNAC sy-vline 
WA_EABL_ALV_STR-AKTIV sy-vline 
WA_EABL_ALV_STR-ABLSTAT sy-vline 
WA_EABL_ALV_STR-PRUEFPKT sy-vline 
WA_EABL_ALV_STR-POPCODE sy-vline 
WA_EABL_ALV_STR-ABLHINW sy-vline 
WA_EABL_ALV_STR-STABLHW sy-vline 
WA_EABL_ALV_STR-ABLESART sy-vline 
WA_EABL_ALV_STR-ISTABLART sy-vline 
WA_EABL_ALV_STR-ABLESER sy-vline 
WA_EABL_ALV_STR-MDENR sy-vline 
WA_EABL_ALV_STR-SM_AUFNR sy-vline 
WA_EABL_ALV_STR-ADATERZ sy-vline 
WA_EABL_ALV_STR-ARBAUF sy-vline 
WA_EABL_ALV_STR-ANLAGE sy-vline 
WA_EABL_ALV_STR-ABLESGR sy-vline 
WA_EABL_ALV_STR-ABLEINH sy-vline 
WA_EABL_ALV_STR-TARIFTYP sy-vline 
WA_EABL_ALV_STR-EQUNR sy-vline 
WA_EABL_ALV_STR-ABLBELNR sy-vline 
WA_EABL_ALV_STR-ADAT sy-vline 
WA_EABL_ALV_STR-ATIM sy-vline 
WA_EABL_ALV_STR-AMS sy-vline 
WA_EABL_ALV_STR-TRANSSTAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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