ABAP Select data from SAP table /SCWM/S_SP_A_HEAD_TU into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_SP_A_HEAD_TU
*  INTO TABLE @DATA(IT_/SCWM/S_SP_A_HEAD_TU2).
*--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_/SCWM/S_SP_A_HEAD_TU INDEX 1 INTO DATA(WA_/SCWM/S_SP_A_HEAD_TU2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_SP_A_HEAD_TU>-TU_NUM = 1.
</SCWM/S_SP_A_HEAD_TU>-TU_SR_ACT_NUM = 1.
</SCWM/S_SP_A_HEAD_TU>-SR_ACT_STATE = 1.
</SCWM/S_SP_A_HEAD_TU>-TU_NUM_EXT = 1.
</SCWM/S_SP_A_HEAD_TU>-MTR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_SP_A_HEAD_TU-LIC_PLATE, sy-vline,
  WA_/SCWM/S_SP_A_HEAD_TU-CREDAT, sy-vline,
  WA_/SCWM/S_SP_A_HEAD_TU-CRETIM, sy-vline,
  WA_/SCWM/S_SP_A_HEAD_TU-CREATED_BY, sy-vline,
  WA_/SCWM/S_SP_A_HEAD_TU-CHGDAT, sy-vline,
  WA_/SCWM/S_SP_A_HEAD_TU-CHGTIM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_SP_A_HEAD_TU 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_/SCWM/S_SP_A_HEAD_TU 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_/SCWM/S_SP_A_HEAD_TU INTO WA_/SCWM/S_SP_A_HEAD_TU.


*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 TU_NUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_SP_A_HEAD_TU-TU_NUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_SP_A_HEAD_TU-TU_NUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPH0, internal->external for field TU_SR_ACT_NUM
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_SP_A_HEAD_TU-TU_SR_ACT_NUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_SP_A_HEAD_TU-TU_SR_ACT_NUM.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field TSP_CURR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_SP_A_HEAD_TU-TSP_CURR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_SP_A_HEAD_TU-TSP_CURR.
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_/SCWM/S_SP_A_HEAD_TU_STR, 
TU_NUM TYPE STRING,
TU_SR_ACT_NUM TYPE STRING,
SR_ACT_STATE TYPE STRING,
TU_NUM_EXT TYPE STRING,
MTR TYPE STRING,
LIC_PLATE TYPE STRING,
CREDAT TYPE STRING,
CRETIM TYPE STRING,
CREATED_BY TYPE STRING,
CHGDAT TYPE STRING,
CHGTIM TYPE STRING,
CHANGED_BY TYPE STRING,
TU_WEIGHT TYPE STRING,
TU_WEIGHT_UOM TYPE STRING,
LOAD_WEIGHT TYPE STRING,
LOAD_WEIGHT_UOM TYPE STRING,
LOAD_VOLUME TYPE STRING,
LOAD_VOLUME_UOM TYPE STRING,
LOAD_LENGTH TYPE STRING,
LOAD_WIDTH TYPE STRING,
LOAD_HEIGHT TYPE STRING,
LOAD_UOM_LWH TYPE STRING,
LOAD_UOM_W TYPE STRING,
LOAD_UOM_H TYPE STRING,
LGTYP TYPE STRING,
LGPLA TYPE STRING,
LGBER TYPE STRING,
CURR_VEH_NUM TYPE STRING,
ROUTE_CURR TYPE STRING,
ROUTE_DEP_DATE TYPE STRING,
ROUTE_DEP_TIME TYPE STRING,
TSP_CURR TYPE STRING,
/SCWM/TU_SR_ACT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_SP_A_HEAD_TU_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_/SCWM/S_SP_A_HEAD_TU_STR-TU_NUM sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-TU_SR_ACT_NUM sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-SR_ACT_STATE sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-TU_NUM_EXT sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-MTR sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-LIC_PLATE sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-CREDAT sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-CRETIM sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-CREATED_BY sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-CHGDAT sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-CHGTIM sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-CHANGED_BY sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-TU_WEIGHT sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-TU_WEIGHT_UOM sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-LOAD_WEIGHT sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-LOAD_WEIGHT_UOM sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-LOAD_VOLUME sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-LOAD_VOLUME_UOM sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-LOAD_LENGTH sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-LOAD_WIDTH sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-LOAD_HEIGHT sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-LOAD_UOM_LWH sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-LOAD_UOM_W sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-LOAD_UOM_H sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-LGTYP sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-LGPLA sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-LGBER sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-CURR_VEH_NUM sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-ROUTE_CURR sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-ROUTE_DEP_DATE sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-ROUTE_DEP_TIME sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-TSP_CURR sy-vline 
WA_/SCWM/S_SP_A_HEAD_TU_STR-/SCWM/TU_SR_ACT sy-vline      INTO ld_text SEPARATED BY SPACE.

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