ABAP Select data from SAP table E1BP2042_MAINTAIN_MM 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_MM 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_MM. 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_MM 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_MM TYPE STANDARD TABLE OF E1BP2042_MAINTAIN_MM,
      WA_E1BP2042_MAINTAIN_MM TYPE E1BP2042_MAINTAIN_MM,
      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_MM> TYPE E1BP2042_MAINTAIN_MM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1BP2042_MAINTAIN_MM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1BP2042_MAINTAIN_MM
  INTO TABLE IT_E1BP2042_MAINTAIN_MM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1BP2042_MAINTAIN_MM
*  INTO TABLE @DATA(IT_E1BP2042_MAINTAIN_MM2).
*--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_MM INDEX 1 INTO DATA(WA_E1BP2042_MAINTAIN_MM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1BP2042_MAINTAIN_MM ASSIGNING <E1BP2042_MAINTAIN_MM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1BP2042_MAINTAIN_MM>-TRANSACTION_TYPE = 1.
<E1BP2042_MAINTAIN_MM>-PARTNER = 1.
<E1BP2042_MAINTAIN_MM>-START_TERM = 1.
<E1BP2042_MAINTAIN_MM>-END_TERM = 1.
<E1BP2042_MAINTAIN_MM>-AMOUNT = 1.

ENDLOOP.

LOOP AT IT_E1BP2042_MAINTAIN_MM INTO WA_E1BP2042_MAINTAIN_MM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1BP2042_MAINTAIN_MM-CURRENCY, sy-vline,
  WA_E1BP2042_MAINTAIN_MM-CURRENCY_ISO, sy-vline,
  WA_E1BP2042_MAINTAIN_MM-INTEREST_RATE, sy-vline,
  WA_E1BP2042_MAINTAIN_MM-CALCULATE_METHOD, sy-vline,
  WA_E1BP2042_MAINTAIN_MM-FREQUENCY_CATEGORY, sy-vline,
  WA_E1BP2042_MAINTAIN_MM-FREQUENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1BP2042_MAINTAIN_MM 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_MM 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_MM INTO WA_E1BP2042_MAINTAIN_MM.


*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_MM_STR, 
TRANSACTION_TYPE TYPE STRING,
PARTNER TYPE STRING,
START_TERM TYPE STRING,
END_TERM TYPE STRING,
AMOUNT TYPE STRING,
CURRENCY TYPE STRING,
CURRENCY_ISO TYPE STRING,
INTEREST_RATE TYPE STRING,
CALCULATE_METHOD TYPE STRING,
FREQUENCY_CATEGORY TYPE STRING,
FREQUENCY TYPE STRING,
ROLLOVER TYPE STRING,
START_INCLUSIVE 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,
GUARANTOR TYPE STRING,
EXTERNAL_TRANSACTION_NUMBER TYPE STRING,
RATE_PERCENTAGE TYPE STRING,
MASTER_AGREEMENT TYPE STRING,
ASSIGNMENT TYPE STRING,
INTERNAL_REFERENCE TYPE STRING,
CHARACTERISTICS TYPE STRING,
ACCT_ASSIGNMENT_REF TYPE STRING,
PERIOD_OF_NOTICE TYPE STRING,
UNIT_PERIOD_OF_NOTICE TYPE STRING,
AUTH_GROUP TYPE STRING,
ACTIVITY_CATEGORY TYPE STRING,
WKDAY_SHIFT_VALUEDATE TYPE STRING,
WKDAY_SHIFT_DUEDATE TYPE STRING,
ROUND_AMNT_GENFLOW TYPE STRING,
INTEREST_CAPITAL TYPE STRING,
NET_PRESENT_VAL_CAL TYPE STRING,
INTEREST_CALENDAR_ID TYPE STRING,
PERIOD_OF_NOTICE_LONG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1BP2042_MAINTAIN_MM_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_MM_STR-TRANSACTION_TYPE sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-PARTNER sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-START_TERM sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-END_TERM sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-AMOUNT sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-CURRENCY sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-CURRENCY_ISO sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-INTEREST_RATE sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-CALCULATE_METHOD sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-FREQUENCY_CATEGORY sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-FREQUENCY sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-ROLLOVER sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-START_INCLUSIVE sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-CONTRACT_DATE sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-CONTRACT_TIME sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-CONTACT_PERSON sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-TRADER sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-EXTERNAL_REFERENCE sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-PORTFOLIO sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-FINANCE_PROJECT sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-GUARANTOR sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-EXTERNAL_TRANSACTION_NUMBER sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-RATE_PERCENTAGE sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-MASTER_AGREEMENT sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-ASSIGNMENT sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-INTERNAL_REFERENCE sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-CHARACTERISTICS sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-ACCT_ASSIGNMENT_REF sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-PERIOD_OF_NOTICE sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-UNIT_PERIOD_OF_NOTICE sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-AUTH_GROUP sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-ACTIVITY_CATEGORY sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-WKDAY_SHIFT_VALUEDATE sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-WKDAY_SHIFT_DUEDATE sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-ROUND_AMNT_GENFLOW sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-INTEREST_CAPITAL sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-NET_PRESENT_VAL_CAL sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-INTEREST_CALENDAR_ID sy-vline 
WA_E1BP2042_MAINTAIN_MM_STR-PERIOD_OF_NOTICE_LONG sy-vline      INTO ld_text SEPARATED BY SPACE.

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