ABAP Select data from SAP table E1BP2042_MAINTAIN_FX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1BP2042_MAINTAIN_FX 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 E1BP2042_MAINTAIN_FX. 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 E1BP2042_MAINTAIN_FX 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_E1BP2042_MAINTAIN_FX TYPE STANDARD TABLE OF E1BP2042_MAINTAIN_FX,
      WA_E1BP2042_MAINTAIN_FX TYPE E1BP2042_MAINTAIN_FX,
      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: <E1BP2042_MAINTAIN_FX> TYPE E1BP2042_MAINTAIN_FX.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1BP2042_MAINTAIN_FX.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1BP2042_MAINTAIN_FX
  INTO TABLE IT_E1BP2042_MAINTAIN_FX.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1BP2042_MAINTAIN_FX
*  INTO TABLE @DATA(IT_E1BP2042_MAINTAIN_FX2).
*--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_E1BP2042_MAINTAIN_FX INDEX 1 INTO DATA(WA_E1BP2042_MAINTAIN_FX2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1BP2042_MAINTAIN_FX ASSIGNING <E1BP2042_MAINTAIN_FX>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1BP2042_MAINTAIN_FX>-TRANSACTION_TYPE = 1.
<E1BP2042_MAINTAIN_FX>-PARTNER = 1.
<E1BP2042_MAINTAIN_FX>-VALUE_DATE = 1.
<E1BP2042_MAINTAIN_FX>-AMOUNT1 = 1.
<E1BP2042_MAINTAIN_FX>-AMOUNT2 = 1.

ENDLOOP.

LOOP AT IT_E1BP2042_MAINTAIN_FX INTO WA_E1BP2042_MAINTAIN_FX.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1BP2042_MAINTAIN_FX-CURRENCY1, sy-vline,
  WA_E1BP2042_MAINTAIN_FX-CURRENCY1_ISO, sy-vline,
  WA_E1BP2042_MAINTAIN_FX-CURRENCY2, sy-vline,
  WA_E1BP2042_MAINTAIN_FX-CURRENCY2_ISO, sy-vline,
  WA_E1BP2042_MAINTAIN_FX-LEAD_CURRENCY, sy-vline,
  WA_E1BP2042_MAINTAIN_FX-LEAD_CURRENCY_ISO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1BP2042_MAINTAIN_FX 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_E1BP2042_MAINTAIN_FX 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_E1BP2042_MAINTAIN_FX INTO WA_E1BP2042_MAINTAIN_FX.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_E1BP2042_MAINTAIN_FX_STR, 
TRANSACTION_TYPE TYPE STRING,
PARTNER TYPE STRING,
VALUE_DATE TYPE STRING,
AMOUNT1 TYPE STRING,
AMOUNT2 TYPE STRING,
CURRENCY1 TYPE STRING,
CURRENCY1_ISO TYPE STRING,
CURRENCY2 TYPE STRING,
CURRENCY2_ISO TYPE STRING,
LEAD_CURRENCY TYPE STRING,
LEAD_CURRENCY_ISO TYPE STRING,
FOLLOW_CURRENCY TYPE STRING,
FOLLOW_CURRENCY_ISO TYPE STRING,
FORWARD_RATE TYPE STRING,
SPOT_RATE TYPE STRING,
SWAP_RATE TYPE STRING,
CONTRACT_DATE TYPE STRING,
CONTRACT_TIME TYPE STRING,
CONTACT_PERSON TYPE STRING,
TRADER TYPE STRING,
EXTERNAL_REFERENCE TYPE STRING,
PORTFOLIO TYPE STRING,
FINANCE_PROJECT TYPE STRING,
EXTERNAL_TRANSACTION_NUMBER TYPE STRING,
MASTER_AGREEMENT TYPE STRING,
ASSIGNMENT TYPE STRING,
INTERNAL_REFERENCE TYPE STRING,
CHARACTERISTICS TYPE STRING,
ACCT_ASSIGNMENT_REF TYPE STRING,
AUTH_GROUP TYPE STRING,
ACTIVITY_CATEGORY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1BP2042_MAINTAIN_FX_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_E1BP2042_MAINTAIN_FX_STR-TRANSACTION_TYPE sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-PARTNER sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-VALUE_DATE sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-AMOUNT1 sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-AMOUNT2 sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-CURRENCY1 sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-CURRENCY1_ISO sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-CURRENCY2 sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-CURRENCY2_ISO sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-LEAD_CURRENCY sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-LEAD_CURRENCY_ISO sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-FOLLOW_CURRENCY sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-FOLLOW_CURRENCY_ISO sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-FORWARD_RATE sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-SPOT_RATE sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-SWAP_RATE sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-CONTRACT_DATE sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-CONTRACT_TIME sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-CONTACT_PERSON sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-TRADER sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-EXTERNAL_REFERENCE sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-PORTFOLIO sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-FINANCE_PROJECT sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-EXTERNAL_TRANSACTION_NUMBER sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-MASTER_AGREEMENT sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-ASSIGNMENT sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-INTERNAL_REFERENCE sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-CHARACTERISTICS sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-ACCT_ASSIGNMENT_REF sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-AUTH_GROUP sy-vline 
WA_E1BP2042_MAINTAIN_FX_STR-ACTIVITY_CATEGORY sy-vline      INTO ld_text SEPARATED BY SPACE.

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