ABAP Select data from SAP table BIW_ISU_DEVCAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BIW_ISU_DEVCAT
*  INTO TABLE @DATA(IT_BIW_ISU_DEVCAT2).
*--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_BIW_ISU_DEVCAT INDEX 1 INTO DATA(WA_BIW_ISU_DEVCAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BIW_ISU_DEVCAT>-MANDT = 1.
<BIW_ISU_DEVCAT>-MATNR = 1.
<BIW_ISU_DEVCAT>-KOMBINAT = 1.
<BIW_ISU_DEVCAT>-FUNKLAS = 1.
<BIW_ISU_DEVCAT>-BAUKLAS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BIW_ISU_DEVCAT-BAUFORM, sy-vline,
  WA_BIW_ISU_DEVCAT-BAUTXT, sy-vline,
  WA_BIW_ISU_DEVCAT-PREISKLA, sy-vline,
  WA_BIW_ISU_DEVCAT-PTBNUM, sy-vline,
  WA_BIW_ISU_DEVCAT-DVGWNUM, sy-vline,
  WA_BIW_ISU_DEVCAT-BGLKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BIW_ISU_DEVCAT 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_BIW_ISU_DEVCAT 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_BIW_ISU_DEVCAT INTO WA_BIW_ISU_DEVCAT.


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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field ABMEIH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BIW_ISU_DEVCAT-ABMEIH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_ISU_DEVCAT-ABMEIH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LADZ_EIH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BIW_ISU_DEVCAT-LADZ_EIH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_ISU_DEVCAT-LADZ_EIH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LADV_EIH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BIW_ISU_DEVCAT-LADV_EIH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_ISU_DEVCAT-LADV_EIH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEIH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BIW_ISU_DEVCAT-GEWEIH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_ISU_DEVCAT-GEWEIH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWLEER_EIH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BIW_ISU_DEVCAT-GEWLEER_EIH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_ISU_DEVCAT-GEWLEER_EIH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit RAT11, internal->external for field RATING
CALL FUNCTION 'CONVERSION_EXIT_RAT11_OUTPUT'
  EXPORTING
    input =                      WA_BIW_ISU_DEVCAT-RATING
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_ISU_DEVCAT-RATING.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PVOLT, internal->external for field P_VOLTAGE
CALL FUNCTION 'CONVERSION_EXIT_PVOLT_OUTPUT'
  EXPORTING
    input =                      WA_BIW_ISU_DEVCAT-P_VOLTAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_ISU_DEVCAT-P_VOLTAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SVOLT, internal->external for field S_VOLTAGE
CALL FUNCTION 'CONVERSION_EXIT_SVOLT_OUTPUT'
  EXPORTING
    input =                      WA_BIW_ISU_DEVCAT-S_VOLTAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_ISU_DEVCAT-S_VOLTAGE.
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_BIW_ISU_DEVCAT_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
KOMBINAT TYPE STRING,
FUNKLAS TYPE STRING,
BAUKLAS TYPE STRING,
BAUFORM TYPE STRING,
BAUTXT TYPE STRING,
PREISKLA TYPE STRING,
PTBNUM TYPE STRING,
DVGWNUM TYPE STRING,
BGLKZ TYPE STRING,
VLZEITT TYPE STRING,
VLZEITTI TYPE STRING,
VLZEITN TYPE STRING,
VLKZBAU TYPE STRING,
ZWGRUPPE TYPE STRING,
EAGRUPPE TYPE STRING,
MESSART TYPE STRING,
UEBERVER TYPE STRING,
BGLNETZ TYPE STRING,
WGRUPPE TYPE STRING,
PRIMWNR1 TYPE STRING,
SEKWNR1 TYPE STRING,
PRIMWNR2 TYPE STRING,
SEKWNR2 TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
ZSPANNS TYPE STRING,
ZSTROMS TYPE STRING,
ZSPANNP TYPE STRING,
ZSTROMP TYPE STRING,
GRPMATNR TYPE STRING,
ORDER_CODE TYPE STRING,
SPARTE TYPE STRING,
NENNBEL TYPE STRING,
KENNZTYP TYPE STRING,
KENNZTYP_TXT TYPE STRING,
STELLPLATZ TYPE STRING,
HOEHEBEH TYPE STRING,
BREITEBEH TYPE STRING,
TIEFEBEH TYPE STRING,
ABMEIH TYPE STRING,
LADEZEIT TYPE STRING,
LADZ_EIH TYPE STRING,
LADEVOL TYPE STRING,
LADV_EIH TYPE STRING,
GEW_ZUL TYPE STRING,
GEWEIH TYPE STRING,
EIGENTUM TYPE STRING,
EIGENTUM_TXT TYPE STRING,
LADV_TXT TYPE STRING,
LADZ_TXT TYPE STRING,
GEW_TXT TYPE STRING,
ABM_TXT TYPE STRING,
PRODUCT_AREA TYPE STRING,
GEW_LEER TYPE STRING,
GEWLEER_EIH TYPE STRING,
GEWLEER_TXT TYPE STRING,
NOTIF_CODE TYPE STRING,
G_INFOSATZ TYPE STRING,
PPM_METER TYPE STRING,
LOSSDTGROUP TYPE STRING,
RATING TYPE STRING,
P_VOLTAGE TYPE STRING,
S_VOLTAGE TYPE STRING,
AMS_DGRP TYPE STRING,
AMCG_DGRP TYPE STRING,
SMART_METER TYPE STRING,
MSG_DGRP_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BIW_ISU_DEVCAT_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_BIW_ISU_DEVCAT_STR-MANDT sy-vline 
WA_BIW_ISU_DEVCAT_STR-MATNR sy-vline 
WA_BIW_ISU_DEVCAT_STR-KOMBINAT sy-vline 
WA_BIW_ISU_DEVCAT_STR-FUNKLAS sy-vline 
WA_BIW_ISU_DEVCAT_STR-BAUKLAS sy-vline 
WA_BIW_ISU_DEVCAT_STR-BAUFORM sy-vline 
WA_BIW_ISU_DEVCAT_STR-BAUTXT sy-vline 
WA_BIW_ISU_DEVCAT_STR-PREISKLA sy-vline 
WA_BIW_ISU_DEVCAT_STR-PTBNUM sy-vline 
WA_BIW_ISU_DEVCAT_STR-DVGWNUM sy-vline 
WA_BIW_ISU_DEVCAT_STR-BGLKZ sy-vline 
WA_BIW_ISU_DEVCAT_STR-VLZEITT sy-vline 
WA_BIW_ISU_DEVCAT_STR-VLZEITTI sy-vline 
WA_BIW_ISU_DEVCAT_STR-VLZEITN sy-vline 
WA_BIW_ISU_DEVCAT_STR-VLKZBAU sy-vline 
WA_BIW_ISU_DEVCAT_STR-ZWGRUPPE sy-vline 
WA_BIW_ISU_DEVCAT_STR-EAGRUPPE sy-vline 
WA_BIW_ISU_DEVCAT_STR-MESSART sy-vline 
WA_BIW_ISU_DEVCAT_STR-UEBERVER sy-vline 
WA_BIW_ISU_DEVCAT_STR-BGLNETZ sy-vline 
WA_BIW_ISU_DEVCAT_STR-WGRUPPE sy-vline 
WA_BIW_ISU_DEVCAT_STR-PRIMWNR1 sy-vline 
WA_BIW_ISU_DEVCAT_STR-SEKWNR1 sy-vline 
WA_BIW_ISU_DEVCAT_STR-PRIMWNR2 sy-vline 
WA_BIW_ISU_DEVCAT_STR-SEKWNR2 sy-vline 
WA_BIW_ISU_DEVCAT_STR-AENAM sy-vline 
WA_BIW_ISU_DEVCAT_STR-AEDAT sy-vline 
WA_BIW_ISU_DEVCAT_STR-ZSPANNS sy-vline 
WA_BIW_ISU_DEVCAT_STR-ZSTROMS sy-vline 
WA_BIW_ISU_DEVCAT_STR-ZSPANNP sy-vline 
WA_BIW_ISU_DEVCAT_STR-ZSTROMP sy-vline 
WA_BIW_ISU_DEVCAT_STR-GRPMATNR sy-vline 
WA_BIW_ISU_DEVCAT_STR-ORDER_CODE sy-vline 
WA_BIW_ISU_DEVCAT_STR-SPARTE sy-vline 
WA_BIW_ISU_DEVCAT_STR-NENNBEL sy-vline 
WA_BIW_ISU_DEVCAT_STR-KENNZTYP sy-vline 
WA_BIW_ISU_DEVCAT_STR-KENNZTYP_TXT sy-vline 
WA_BIW_ISU_DEVCAT_STR-STELLPLATZ sy-vline 
WA_BIW_ISU_DEVCAT_STR-HOEHEBEH sy-vline 
WA_BIW_ISU_DEVCAT_STR-BREITEBEH sy-vline 
WA_BIW_ISU_DEVCAT_STR-TIEFEBEH sy-vline 
WA_BIW_ISU_DEVCAT_STR-ABMEIH sy-vline 
WA_BIW_ISU_DEVCAT_STR-LADEZEIT sy-vline 
WA_BIW_ISU_DEVCAT_STR-LADZ_EIH sy-vline 
WA_BIW_ISU_DEVCAT_STR-LADEVOL sy-vline 
WA_BIW_ISU_DEVCAT_STR-LADV_EIH sy-vline 
WA_BIW_ISU_DEVCAT_STR-GEW_ZUL sy-vline 
WA_BIW_ISU_DEVCAT_STR-GEWEIH sy-vline 
WA_BIW_ISU_DEVCAT_STR-EIGENTUM sy-vline 
WA_BIW_ISU_DEVCAT_STR-EIGENTUM_TXT sy-vline 
WA_BIW_ISU_DEVCAT_STR-LADV_TXT sy-vline 
WA_BIW_ISU_DEVCAT_STR-LADZ_TXT sy-vline 
WA_BIW_ISU_DEVCAT_STR-GEW_TXT sy-vline 
WA_BIW_ISU_DEVCAT_STR-ABM_TXT sy-vline 
WA_BIW_ISU_DEVCAT_STR-PRODUCT_AREA sy-vline 
WA_BIW_ISU_DEVCAT_STR-GEW_LEER sy-vline 
WA_BIW_ISU_DEVCAT_STR-GEWLEER_EIH sy-vline 
WA_BIW_ISU_DEVCAT_STR-GEWLEER_TXT sy-vline 
WA_BIW_ISU_DEVCAT_STR-NOTIF_CODE sy-vline 
WA_BIW_ISU_DEVCAT_STR-G_INFOSATZ sy-vline 
WA_BIW_ISU_DEVCAT_STR-PPM_METER sy-vline 
WA_BIW_ISU_DEVCAT_STR-LOSSDTGROUP sy-vline 
WA_BIW_ISU_DEVCAT_STR-RATING sy-vline 
WA_BIW_ISU_DEVCAT_STR-P_VOLTAGE sy-vline 
WA_BIW_ISU_DEVCAT_STR-S_VOLTAGE sy-vline 
WA_BIW_ISU_DEVCAT_STR-AMS_DGRP sy-vline 
WA_BIW_ISU_DEVCAT_STR-AMCG_DGRP sy-vline 
WA_BIW_ISU_DEVCAT_STR-SMART_METER sy-vline 
WA_BIW_ISU_DEVCAT_STR-MSG_DGRP_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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