ABAP Select data from SAP table EENRGY_CR_BR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EENRGY_CR_BR
*  INTO TABLE @DATA(IT_EENRGY_CR_BR2).
*--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_EENRGY_CR_BR INDEX 1 INTO DATA(WA_EENRGY_CR_BR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EENRGY_CR_BR>-MANDT = 1.
<EENRGY_CR_BR>-GEN_CONTRACT = 1.
<EENRGY_CR_BR>-ALLOC_DATE = 1.
<EENRGY_CR_BR>-RUSE_BEGDATE = 1.
<EENRGY_CR_BR>-TOU_CODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EENRGY_CR_BR-TRANS_NUM, sy-vline,
  WA_EENRGY_CR_BR-CONTRACT_REF, sy-vline,
  WA_EENRGY_CR_BR-ACT_TYPE, sy-vline,
  WA_EENRGY_CR_BR-RUSE_ENDDATE, sy-vline,
  WA_EENRGY_CR_BR-QUANT, sy-vline,
  WA_EENRGY_CR_BR-UNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EENRGY_CR_BR 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_EENRGY_CR_BR 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_EENRGY_CR_BR INTO WA_EENRGY_CR_BR.


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

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

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

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

*Conversion exit ALPHA, internal->external for field CONS_REF_CONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EENRGY_CR_BR-CONS_REF_CONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EENRGY_CR_BR-CONS_REF_CONTRACT.
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_EENRGY_CR_BR_STR, 
MANDT TYPE STRING,
GEN_CONTRACT TYPE STRING,
ALLOC_DATE TYPE STRING,
RUSE_BEGDATE TYPE STRING,
TOU_CODE TYPE STRING,
TRANS_NUM TYPE STRING,
CONTRACT_REF TYPE STRING,
ACT_TYPE TYPE STRING,
RUSE_ENDDATE TYPE STRING,
QUANT TYPE STRING,
UNIT TYPE STRING,
PRICE_AMNT TYPE STRING,
CURRENCY TYPE STRING,
BILL_DOC TYPE STRING,
REV_TR_NUM TYPE STRING,
CREATEDBY TYPE STRING,
CREATEDDATE TYPE STRING,
CREATEDTIME TYPE STRING,
REMARKS TYPE STRING,
PROPORTION TYPE STRING,
BEGABRPE TYPE STRING,
ENDABRPE TYPE STRING,
PROPORTION_EXT TYPE STRING,
CONS_REF_CONTRACT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EENRGY_CR_BR_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_EENRGY_CR_BR_STR-MANDT sy-vline 
WA_EENRGY_CR_BR_STR-GEN_CONTRACT sy-vline 
WA_EENRGY_CR_BR_STR-ALLOC_DATE sy-vline 
WA_EENRGY_CR_BR_STR-RUSE_BEGDATE sy-vline 
WA_EENRGY_CR_BR_STR-TOU_CODE sy-vline 
WA_EENRGY_CR_BR_STR-TRANS_NUM sy-vline 
WA_EENRGY_CR_BR_STR-CONTRACT_REF sy-vline 
WA_EENRGY_CR_BR_STR-ACT_TYPE sy-vline 
WA_EENRGY_CR_BR_STR-RUSE_ENDDATE sy-vline 
WA_EENRGY_CR_BR_STR-QUANT sy-vline 
WA_EENRGY_CR_BR_STR-UNIT sy-vline 
WA_EENRGY_CR_BR_STR-PRICE_AMNT sy-vline 
WA_EENRGY_CR_BR_STR-CURRENCY sy-vline 
WA_EENRGY_CR_BR_STR-BILL_DOC sy-vline 
WA_EENRGY_CR_BR_STR-REV_TR_NUM sy-vline 
WA_EENRGY_CR_BR_STR-CREATEDBY sy-vline 
WA_EENRGY_CR_BR_STR-CREATEDDATE sy-vline 
WA_EENRGY_CR_BR_STR-CREATEDTIME sy-vline 
WA_EENRGY_CR_BR_STR-REMARKS sy-vline 
WA_EENRGY_CR_BR_STR-PROPORTION sy-vline 
WA_EENRGY_CR_BR_STR-BEGABRPE sy-vline 
WA_EENRGY_CR_BR_STR-ENDABRPE sy-vline 
WA_EENRGY_CR_BR_STR-PROPORTION_EXT sy-vline 
WA_EENRGY_CR_BR_STR-CONS_REF_CONTRACT sy-vline      INTO ld_text SEPARATED BY SPACE.

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