ABAP Select data from SAP table BAMTABI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAMTABI
*  INTO TABLE @DATA(IT_BAMTABI2).
*--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_BAMTABI INDEX 1 INTO DATA(WA_BAMTABI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAMTABI>-TABNAME = 1.
<BAMTABI>-NUM_ROWS = 1.
<BAMTABI>-CLIENT = 1.
<BAMTABI>-NOCALLS = 1.
<BAMTABI>-DIRCNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAMTABI-DIRFAIL, sy-vline,
  WA_BAMTABI-SEQCNT, sy-vline,
  WA_BAMTABI-SEQFAIL, sy-vline,
  WA_BAMTABI-UPDCNT, sy-vline,
  WA_BAMTABI-DELCNT, sy-vline,
  WA_BAMTABI-INSCNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAMTABI 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_BAMTABI 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_BAMTABI INTO WA_BAMTABI.


*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_BAMTABI_STR, 
TABNAME TYPE STRING,
NUM_ROWS TYPE STRING,
CLIENT TYPE STRING,
NOCALLS TYPE STRING,
DIRCNT TYPE STRING,
DIRFAIL TYPE STRING,
SEQCNT TYPE STRING,
SEQFAIL TYPE STRING,
UPDCNT TYPE STRING,
DELCNT TYPE STRING,
INSCNT TYPE STRING,
PUFFERUNG TYPE STRING,
SCHFELDANZ TYPE STRING,
TABLEN TYPE STRING,
KEYCNT TYPE STRING,
KEYLEN TYPE STRING,
TEXT TYPE STRING,
SIZE TYPE STRING,
CHANGES TYPE STRING,
CHANGESREL TYPE STRING,
READ_REC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAMTABI_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_BAMTABI_STR-TABNAME sy-vline 
WA_BAMTABI_STR-NUM_ROWS sy-vline 
WA_BAMTABI_STR-CLIENT sy-vline 
WA_BAMTABI_STR-NOCALLS sy-vline 
WA_BAMTABI_STR-DIRCNT sy-vline 
WA_BAMTABI_STR-DIRFAIL sy-vline 
WA_BAMTABI_STR-SEQCNT sy-vline 
WA_BAMTABI_STR-SEQFAIL sy-vline 
WA_BAMTABI_STR-UPDCNT sy-vline 
WA_BAMTABI_STR-DELCNT sy-vline 
WA_BAMTABI_STR-INSCNT sy-vline 
WA_BAMTABI_STR-PUFFERUNG sy-vline 
WA_BAMTABI_STR-SCHFELDANZ sy-vline 
WA_BAMTABI_STR-TABLEN sy-vline 
WA_BAMTABI_STR-KEYCNT sy-vline 
WA_BAMTABI_STR-KEYLEN sy-vline 
WA_BAMTABI_STR-TEXT sy-vline 
WA_BAMTABI_STR-SIZE sy-vline 
WA_BAMTABI_STR-CHANGES sy-vline 
WA_BAMTABI_STR-CHANGESREL sy-vline 
WA_BAMTABI_STR-READ_REC sy-vline      INTO ld_text SEPARATED BY SPACE.

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