ABAP Select data from SAP table BAMRTTYPEA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAMRTTYPEA
*  INTO TABLE @DATA(IT_BAMRTTYPEA2).
*--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_BAMRTTYPEA INDEX 1 INTO DATA(WA_BAMRTTYPEA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAMRTTYPEA>-KEY0 = 1.
<BAMRTTYPEA>-KEY1 = 1.
<BAMRTTYPEA>-KEY2 = 1.
<BAMRTTYPEA>-KEY3 = 1.
<BAMRTTYPEA>-KEY4 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAMRTTYPEA-INIT, sy-vline,
  WA_BAMRTTYPEA-AVAILABLE, sy-vline,
  WA_BAMRTTYPEA-TOTAL, sy-vline,
  WA_BAMRTTYPEA-COUNTER, sy-vline,
  WA_BAMRTTYPEA-PERCENT, sy-vline,
  WA_BAMRTTYPEA-TVALUE0, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAMRTTYPEA 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_BAMRTTYPEA 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_BAMRTTYPEA INTO WA_BAMRTTYPEA.


*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_BAMRTTYPEA_STR, 
KEY0 TYPE STRING,
KEY1 TYPE STRING,
KEY2 TYPE STRING,
KEY3 TYPE STRING,
KEY4 TYPE STRING,
INIT TYPE STRING,
AVAILABLE TYPE STRING,
TOTAL TYPE STRING,
COUNTER TYPE STRING,
PERCENT TYPE STRING,
TVALUE0 TYPE STRING,
TVALUE1 TYPE STRING,
TVALUE2 TYPE STRING,
TVALUE3 TYPE STRING,
TVALUE4 TYPE STRING,
TVALUE5 TYPE STRING,
TVALUE6 TYPE STRING,
TVALUE7 TYPE STRING,
TVALUE8 TYPE STRING,
TVALUE9 TYPE STRING,
TVALUE10 TYPE STRING,
TVALUE11 TYPE STRING,
TVALUE12 TYPE STRING,
TVALUE13 TYPE STRING,
TVALUE14 TYPE STRING,
TVALUE15 TYPE STRING,
TVALUE16 TYPE STRING,
TVALUE17 TYPE STRING,
TVALUE18 TYPE STRING,
TVALUE19 TYPE STRING,
SMPL_PART0 TYPE STRING,
SMPL_PART1 TYPE STRING,
SMPL_PART2 TYPE STRING,
SMPL_PART3 TYPE STRING,
SMPL_PART4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAMRTTYPEA_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_BAMRTTYPEA_STR-KEY0 sy-vline 
WA_BAMRTTYPEA_STR-KEY1 sy-vline 
WA_BAMRTTYPEA_STR-KEY2 sy-vline 
WA_BAMRTTYPEA_STR-KEY3 sy-vline 
WA_BAMRTTYPEA_STR-KEY4 sy-vline 
WA_BAMRTTYPEA_STR-INIT sy-vline 
WA_BAMRTTYPEA_STR-AVAILABLE sy-vline 
WA_BAMRTTYPEA_STR-TOTAL sy-vline 
WA_BAMRTTYPEA_STR-COUNTER sy-vline 
WA_BAMRTTYPEA_STR-PERCENT sy-vline 
WA_BAMRTTYPEA_STR-TVALUE0 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE1 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE2 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE3 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE4 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE5 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE6 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE7 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE8 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE9 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE10 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE11 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE12 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE13 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE14 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE15 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE16 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE17 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE18 sy-vline 
WA_BAMRTTYPEA_STR-TVALUE19 sy-vline 
WA_BAMRTTYPEA_STR-SMPL_PART0 sy-vline 
WA_BAMRTTYPEA_STR-SMPL_PART1 sy-vline 
WA_BAMRTTYPEA_STR-SMPL_PART2 sy-vline 
WA_BAMRTTYPEA_STR-SMPL_PART3 sy-vline 
WA_BAMRTTYPEA_STR-SMPL_PART4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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