ABAP Select data from SAP table T001B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T001B 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 T001B. 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 T001B 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_T001B TYPE STANDARD TABLE OF T001B,
      WA_T001B TYPE T001B,
      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: <T001B> TYPE T001B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T001B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T001B
  INTO TABLE IT_T001B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T001B
*  INTO TABLE @DATA(IT_T001B2).
*--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_T001B INDEX 1 INTO DATA(WA_T001B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T001B ASSIGNING <T001B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T001B>-MANDT = 1.
<T001B>-RRCTY = 1.
<T001B>-BUKRS = 1.
<T001B>-MKOAR = 1.
<T001B>-BKONT = 1.

ENDLOOP.

LOOP AT IT_T001B INTO WA_T001B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T001B-VKONT, sy-vline,
  WA_T001B-FRYE1, sy-vline,
  WA_T001B-FRPE1, sy-vline,
  WA_T001B-TOYE1, sy-vline,
  WA_T001B-TOPE1, sy-vline,
  WA_T001B-FRYE2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T001B 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_T001B 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_T001B INTO WA_T001B.


*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 ALPHA, internal->external for field BKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T001B-BKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T001B-BKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T001B-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T001B-VKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field FRYE1
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_T001B-FRYE1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T001B-FRYE1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field TOYE1
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_T001B-TOYE1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T001B-TOYE1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field FRYE2
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_T001B-FRYE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T001B-FRYE2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field TOYE2
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_T001B-TOYE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T001B-TOYE2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field FRYE3
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_T001B-FRYE3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T001B-FRYE3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field TOYE3
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_T001B-TOYE3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T001B-TOYE3.
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_T001B_STR, 
MANDT TYPE STRING,
RRCTY TYPE STRING,
BUKRS TYPE STRING,
MKOAR TYPE STRING,
BKONT TYPE STRING,
VKONT TYPE STRING,
FRYE1 TYPE STRING,
FRPE1 TYPE STRING,
TOYE1 TYPE STRING,
TOPE1 TYPE STRING,
FRYE2 TYPE STRING,
FRPE2 TYPE STRING,
TOYE2 TYPE STRING,
TOPE2 TYPE STRING,
BRGRU TYPE STRING,
FRYE3 TYPE STRING,
FRPE3 TYPE STRING,
TOYE3 TYPE STRING,
TOPE3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T001B_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_T001B_STR-MANDT sy-vline 
WA_T001B_STR-RRCTY sy-vline 
WA_T001B_STR-BUKRS sy-vline 
WA_T001B_STR-MKOAR sy-vline 
WA_T001B_STR-BKONT sy-vline 
WA_T001B_STR-VKONT sy-vline 
WA_T001B_STR-FRYE1 sy-vline 
WA_T001B_STR-FRPE1 sy-vline 
WA_T001B_STR-TOYE1 sy-vline 
WA_T001B_STR-TOPE1 sy-vline 
WA_T001B_STR-FRYE2 sy-vline 
WA_T001B_STR-FRPE2 sy-vline 
WA_T001B_STR-TOYE2 sy-vline 
WA_T001B_STR-TOPE2 sy-vline 
WA_T001B_STR-BRGRU sy-vline 
WA_T001B_STR-FRYE3 sy-vline 
WA_T001B_STR-FRPE3 sy-vline 
WA_T001B_STR-TOYE3 sy-vline 
WA_T001B_STR-TOPE3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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