ABAP Select data from SAP table CRMST_UBBVOL_BTIL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMST_UBBVOL_BTIL
*  INTO TABLE @DATA(IT_CRMST_UBBVOL_BTIL2).
*--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_CRMST_UBBVOL_BTIL INDEX 1 INTO DATA(WA_CRMST_UBBVOL_BTIL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMST_UBBVOL_BTIL>-GUID = 1.
<CRMST_UBBVOL_BTIL>-ITEM_GUID = 1.
<CRMST_UBBVOL_BTIL>-IDENTIFIER = 1.
<CRMST_UBBVOL_BTIL>-SETTL_PERIOD = 1.
<CRMST_UBBVOL_BTIL>-SETTL_FROM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMST_UBBVOL_BTIL-SETTL_TO, sy-vline,
  WA_CRMST_UBBVOL_BTIL-BILLING_TIMEZONE, sy-vline,
  WA_CRMST_UBBVOL_BTIL-USAGEFCT, sy-vline,
  WA_CRMST_UBBVOL_BTIL-MEAS_POINT_ID, sy-vline,
  WA_CRMST_UBBVOL_BTIL-READING_ID, sy-vline,
  WA_CRMST_UBBVOL_BTIL-READING_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMST_UBBVOL_BTIL 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_CRMST_UBBVOL_BTIL 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_CRMST_UBBVOL_BTIL INTO WA_CRMST_UBBVOL_BTIL.


*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 TSTPS, internal->external for field SETTL_FROM
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CRMST_UBBVOL_BTIL-SETTL_FROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMST_UBBVOL_BTIL-SETTL_FROM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field SETTL_TO
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CRMST_UBBVOL_BTIL-SETTL_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMST_UBBVOL_BTIL-SETTL_TO.
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_CRMST_UBBVOL_BTIL_STR, 
GUID TYPE STRING,
ITEM_GUID TYPE STRING,
IDENTIFIER TYPE STRING,
SETTL_PERIOD TYPE STRING,
SETTL_FROM TYPE STRING,
SETTL_TO TYPE STRING,
BILLING_TIMEZONE TYPE STRING,
USAGEFCT TYPE STRING,
MEAS_POINT_ID TYPE STRING,
READING_ID TYPE STRING,
READING_DATE TYPE STRING,
ORIGIN_ICON TYPE STRING,
READING_REMINDER TYPE STRING,
READING_TMZN TYPE STRING,
READING_VAL TYPE STRING,
READING_ORIG TYPE STRING,
PRI_READING_ID TYPE STRING,
PRI_READING_DATE TYPE STRING,
PRI_READING_TMZN TYPE STRING,
PRI_READING_VAL TYPE STRING,
PRI_READING_ORIG TYPE STRING,
UNIT TYPE STRING,
QUANTITY TYPE STRING,
DECIMALS TYPE STRING,
STATUS_PROCESS TYPE STRING,
STATUS_POOL TYPE STRING,
MERGED TYPE STRING,
PERIOD_TYPE TYPE STRING,
USAGE_VOLUME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMST_UBBVOL_BTIL_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_CRMST_UBBVOL_BTIL_STR-GUID sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-ITEM_GUID sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-IDENTIFIER sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-SETTL_PERIOD sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-SETTL_FROM sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-SETTL_TO sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-BILLING_TIMEZONE sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-USAGEFCT sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-MEAS_POINT_ID sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-READING_ID sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-READING_DATE sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-ORIGIN_ICON sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-READING_REMINDER sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-READING_TMZN sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-READING_VAL sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-READING_ORIG sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-PRI_READING_ID sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-PRI_READING_DATE sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-PRI_READING_TMZN sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-PRI_READING_VAL sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-PRI_READING_ORIG sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-UNIT sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-QUANTITY sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-DECIMALS sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-STATUS_PROCESS sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-STATUS_POOL sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-MERGED sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-PERIOD_TYPE sy-vline 
WA_CRMST_UBBVOL_BTIL_STR-USAGE_VOLUME sy-vline      INTO ld_text SEPARATED BY SPACE.

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