ABAP Select data from SAP table ISMAM_TXW_JJTBB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISMAM_TXW_JJTBB
*  INTO TABLE @DATA(IT_ISMAM_TXW_JJTBB2).
*--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_ISMAM_TXW_JJTBB INDEX 1 INTO DATA(WA_ISMAM_TXW_JJTBB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISMAM_TXW_JJTBB>-MANDT = 1.
<ISMAM_TXW_JJTBB>-VNR = 1.
<ISMAM_TXW_JJTBB>-BEDNR = 1.
<ISMAM_TXW_JJTBB>-BESNREXT = 1.
<ISMAM_TXW_JJTBB>-ZUOFUNKT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISMAM_TXW_JJTBB-BELEINH, sy-vline,
  WA_ISMAM_TXW_JJTBB-INHK_TECH2, sy-vline,
  WA_ISMAM_TXW_JJTBB-INHK_KFM, sy-vline,
  WA_ISMAM_TXW_JJTBB-AVMPOS_ART, sy-vline,
  WA_ISMAM_TXW_JJTBB-BRAN1, sy-vline,
  WA_ISMAM_TXW_JJTBB-KUKARR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISMAM_TXW_JJTBB 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_ISMAM_TXW_JJTBB 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_ISMAM_TXW_JJTBB INTO WA_ISMAM_TXW_JJTBB.


*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 VNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISMAM_TXW_JJTBB-VNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISMAM_TXW_JJTBB-VNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field INHK_TECH2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISMAM_TXW_JJTBB-INHK_TECH2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISMAM_TXW_JJTBB-INHK_TECH2.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISMAM_TXW_JJTBB-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISMAM_TXW_JJTBB-MATNR.
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_ISMAM_TXW_JJTBB_STR, 
MANDT TYPE STRING,
VNR TYPE STRING,
BEDNR TYPE STRING,
BESNREXT TYPE STRING,
ZUOFUNKT TYPE STRING,
BELEINH TYPE STRING,
INHK_TECH2 TYPE STRING,
INHK_KFM TYPE STRING,
AVMPOS_ART TYPE STRING,
BRAN1 TYPE STRING,
KUKARR TYPE STRING,
IN_GPNR TYPE STRING,
AR_GPNR TYPE STRING,
BEZIRK_AG TYPE STRING,
BEZIRK_IS TYPE STRING,
PRDHA TYPE STRING,
VTNR TYPE STRING,
MATNR TYPE STRING,
DIENTYP TYPE STRING,
FATBB1 TYPE STRING,
FATBB2 TYPE STRING,
FATBB3 TYPE STRING,
FATBB4 TYPE STRING,
FATBB5 TYPE STRING,
FATBB6 TYPE STRING,
FATBB7 TYPE STRING,
ABW_GUEAB TYPE STRING,
ABW_GUEBIS TYPE STRING,
XLOEVM TYPE STRING,
XLOEKZ TYPE STRING,
ERFUSER TYPE STRING,
ERFDATE TYPE STRING,
ERFTIME TYPE STRING,
AENUSER TYPE STRING,
AENDATE TYPE STRING,
AENTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISMAM_TXW_JJTBB_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_ISMAM_TXW_JJTBB_STR-MANDT sy-vline 
WA_ISMAM_TXW_JJTBB_STR-VNR sy-vline 
WA_ISMAM_TXW_JJTBB_STR-BEDNR sy-vline 
WA_ISMAM_TXW_JJTBB_STR-BESNREXT sy-vline 
WA_ISMAM_TXW_JJTBB_STR-ZUOFUNKT sy-vline 
WA_ISMAM_TXW_JJTBB_STR-BELEINH sy-vline 
WA_ISMAM_TXW_JJTBB_STR-INHK_TECH2 sy-vline 
WA_ISMAM_TXW_JJTBB_STR-INHK_KFM sy-vline 
WA_ISMAM_TXW_JJTBB_STR-AVMPOS_ART sy-vline 
WA_ISMAM_TXW_JJTBB_STR-BRAN1 sy-vline 
WA_ISMAM_TXW_JJTBB_STR-KUKARR sy-vline 
WA_ISMAM_TXW_JJTBB_STR-IN_GPNR sy-vline 
WA_ISMAM_TXW_JJTBB_STR-AR_GPNR sy-vline 
WA_ISMAM_TXW_JJTBB_STR-BEZIRK_AG sy-vline 
WA_ISMAM_TXW_JJTBB_STR-BEZIRK_IS sy-vline 
WA_ISMAM_TXW_JJTBB_STR-PRDHA sy-vline 
WA_ISMAM_TXW_JJTBB_STR-VTNR sy-vline 
WA_ISMAM_TXW_JJTBB_STR-MATNR sy-vline 
WA_ISMAM_TXW_JJTBB_STR-DIENTYP sy-vline 
WA_ISMAM_TXW_JJTBB_STR-FATBB1 sy-vline 
WA_ISMAM_TXW_JJTBB_STR-FATBB2 sy-vline 
WA_ISMAM_TXW_JJTBB_STR-FATBB3 sy-vline 
WA_ISMAM_TXW_JJTBB_STR-FATBB4 sy-vline 
WA_ISMAM_TXW_JJTBB_STR-FATBB5 sy-vline 
WA_ISMAM_TXW_JJTBB_STR-FATBB6 sy-vline 
WA_ISMAM_TXW_JJTBB_STR-FATBB7 sy-vline 
WA_ISMAM_TXW_JJTBB_STR-ABW_GUEAB sy-vline 
WA_ISMAM_TXW_JJTBB_STR-ABW_GUEBIS sy-vline 
WA_ISMAM_TXW_JJTBB_STR-XLOEVM sy-vline 
WA_ISMAM_TXW_JJTBB_STR-XLOEKZ sy-vline 
WA_ISMAM_TXW_JJTBB_STR-ERFUSER sy-vline 
WA_ISMAM_TXW_JJTBB_STR-ERFDATE sy-vline 
WA_ISMAM_TXW_JJTBB_STR-ERFTIME sy-vline 
WA_ISMAM_TXW_JJTBB_STR-AENUSER sy-vline 
WA_ISMAM_TXW_JJTBB_STR-AENDATE sy-vline 
WA_ISMAM_TXW_JJTBB_STR-AENTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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