ABAP Select data from SAP table /ECRS/T006_BUFF_S into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ECRS/T006_BUFF_S 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 /ECRS/T006_BUFF_S. 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 /ECRS/T006_BUFF_S 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_/ECRS/T006_BUFF_S TYPE STANDARD TABLE OF /ECRS/T006_BUFF_S,
      WA_/ECRS/T006_BUFF_S TYPE /ECRS/T006_BUFF_S,
      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: </ECRS/T006_BUFF_S> TYPE /ECRS/T006_BUFF_S.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/ECRS/T006_BUFF_S.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ECRS/T006_BUFF_S
  INTO TABLE IT_/ECRS/T006_BUFF_S.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ECRS/T006_BUFF_S
*  INTO TABLE @DATA(IT_/ECRS/T006_BUFF_S2).
*--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_/ECRS/T006_BUFF_S INDEX 1 INTO DATA(WA_/ECRS/T006_BUFF_S2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ECRS/T006_BUFF_S ASSIGNING </ECRS/T006_BUFF_S>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ECRS/T006_BUFF_S>-MANDT = 1.
</ECRS/T006_BUFF_S>-MSEHI = 1.
</ECRS/T006_BUFF_S>-KZEX3 = 1.
</ECRS/T006_BUFF_S>-KZEX6 = 1.
</ECRS/T006_BUFF_S>-ANDEC = 1.

ENDLOOP.

LOOP AT IT_/ECRS/T006_BUFF_S INTO WA_/ECRS/T006_BUFF_S.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ECRS/T006_BUFF_S-KZKEH, sy-vline,
  WA_/ECRS/T006_BUFF_S-KZWOB, sy-vline,
  WA_/ECRS/T006_BUFF_S-KZ1EH, sy-vline,
  WA_/ECRS/T006_BUFF_S-KZ2EH, sy-vline,
  WA_/ECRS/T006_BUFF_S-DIMID, sy-vline,
  WA_/ECRS/T006_BUFF_S-ZAEHL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ECRS/T006_BUFF_S 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_/ECRS/T006_BUFF_S 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_/ECRS/T006_BUFF_S INTO WA_/ECRS/T006_BUFF_S.


*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 CUNIT, internal->external for field MSEHI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/ECRS/T006_BUFF_S-MSEHI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ECRS/T006_BUFF_S-MSEHI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field TEMP_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/ECRS/T006_BUFF_S-TEMP_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ECRS/T006_BUFF_S-TEMP_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PRESS_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/ECRS/T006_BUFF_S-PRESS_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ECRS/T006_BUFF_S-PRESS_UNIT.
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_/ECRS/T006_BUFF_S_STR, 
MANDT TYPE STRING,
MSEHI TYPE STRING,
KZEX3 TYPE STRING,
KZEX6 TYPE STRING,
ANDEC TYPE STRING,
KZKEH TYPE STRING,
KZWOB TYPE STRING,
KZ1EH TYPE STRING,
KZ2EH TYPE STRING,
DIMID TYPE STRING,
ZAEHL TYPE STRING,
NENNR TYPE STRING,
EXP10 TYPE STRING,
ADDKO TYPE STRING,
EXPON TYPE STRING,
DECAN TYPE STRING,
ISOCODE TYPE STRING,
PRIMARY TYPE STRING,
TEMP_VALUE TYPE STRING,
TEMP_UNIT TYPE STRING,
FAMUNIT TYPE STRING,
PRESS_VAL TYPE STRING,
PRESS_UNIT TYPE STRING,
NO_DATA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ECRS/T006_BUFF_S_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_/ECRS/T006_BUFF_S_STR-MANDT sy-vline 
WA_/ECRS/T006_BUFF_S_STR-MSEHI sy-vline 
WA_/ECRS/T006_BUFF_S_STR-KZEX3 sy-vline 
WA_/ECRS/T006_BUFF_S_STR-KZEX6 sy-vline 
WA_/ECRS/T006_BUFF_S_STR-ANDEC sy-vline 
WA_/ECRS/T006_BUFF_S_STR-KZKEH sy-vline 
WA_/ECRS/T006_BUFF_S_STR-KZWOB sy-vline 
WA_/ECRS/T006_BUFF_S_STR-KZ1EH sy-vline 
WA_/ECRS/T006_BUFF_S_STR-KZ2EH sy-vline 
WA_/ECRS/T006_BUFF_S_STR-DIMID sy-vline 
WA_/ECRS/T006_BUFF_S_STR-ZAEHL sy-vline 
WA_/ECRS/T006_BUFF_S_STR-NENNR sy-vline 
WA_/ECRS/T006_BUFF_S_STR-EXP10 sy-vline 
WA_/ECRS/T006_BUFF_S_STR-ADDKO sy-vline 
WA_/ECRS/T006_BUFF_S_STR-EXPON sy-vline 
WA_/ECRS/T006_BUFF_S_STR-DECAN sy-vline 
WA_/ECRS/T006_BUFF_S_STR-ISOCODE sy-vline 
WA_/ECRS/T006_BUFF_S_STR-PRIMARY sy-vline 
WA_/ECRS/T006_BUFF_S_STR-TEMP_VALUE sy-vline 
WA_/ECRS/T006_BUFF_S_STR-TEMP_UNIT sy-vline 
WA_/ECRS/T006_BUFF_S_STR-FAMUNIT sy-vline 
WA_/ECRS/T006_BUFF_S_STR-PRESS_VAL sy-vline 
WA_/ECRS/T006_BUFF_S_STR-PRESS_UNIT sy-vline 
WA_/ECRS/T006_BUFF_S_STR-NO_DATA sy-vline      INTO ld_text SEPARATED BY SPACE.

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