ABAP Select data from SAP table /MOC/S_ACT_EXTRACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MOC/S_ACT_EXTRACT
*  INTO TABLE @DATA(IT_/MOC/S_ACT_EXTRACT2).
*--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_/MOC/S_ACT_EXTRACT INDEX 1 INTO DATA(WA_/MOC/S_ACT_EXTRACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MOC/S_ACT_EXTRACT>-ACTIVITY_ID = 1.
</MOC/S_ACT_EXTRACT>-APPLICATION = 1.
</MOC/S_ACT_EXTRACT>-ACT_TEMPLATE = 1.
</MOC/S_ACT_EXTRACT>-ACT_TYPE = 1.
</MOC/S_ACT_EXTRACT>-ACT_CATEGORY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MOC/S_ACT_EXTRACT-AUTH_GROUP, sy-vline,
  WA_/MOC/S_ACT_EXTRACT-ORIGIN_CD, sy-vline,
  WA_/MOC/S_ACT_EXTRACT-RESP_VAL_BOOL, sy-vline,
  WA_/MOC/S_ACT_EXTRACT-RESP_CODE, sy-vline,
  WA_/MOC/S_ACT_EXTRACT-RESP_CODE_GROUP, sy-vline,
  WA_/MOC/S_ACT_EXTRACT-LCYCLE_CD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MOC/S_ACT_EXTRACT 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_/MOC/S_ACT_EXTRACT 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_/MOC/S_ACT_EXTRACT INTO WA_/MOC/S_ACT_EXTRACT.


*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 ACTIVITY_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MOC/S_ACT_EXTRACT-ACTIVITY_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MOC/S_ACT_EXTRACT-ACTIVITY_ID.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit TSTLC, internal->external for field CREATED_ON
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/MOC/S_ACT_EXTRACT-CREATED_ON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MOC/S_ACT_EXTRACT-CREATED_ON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field CHANGED_ON
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/MOC/S_ACT_EXTRACT-CHANGED_ON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MOC/S_ACT_EXTRACT-CHANGED_ON.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MOC/S_ACT_EXTRACT-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MOC/S_ACT_EXTRACT-PARTNER.
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_/MOC/S_ACT_EXTRACT_STR, 
ACTIVITY_ID TYPE STRING,
APPLICATION TYPE STRING,
ACT_TEMPLATE TYPE STRING,
ACT_TYPE TYPE STRING,
ACT_CATEGORY TYPE STRING,
AUTH_GROUP TYPE STRING,
ORIGIN_CD TYPE STRING,
RESP_VAL_BOOL TYPE STRING,
RESP_CODE TYPE STRING,
RESP_CODE_GROUP TYPE STRING,
LCYCLE_CD TYPE STRING,
DEFERRAL_CD TYPE STRING,
DIGSIGN_CD TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_ON TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_ON TYPE STRING,
PARENT_ACT_ID TYPE STRING,
ISSUE_ID TYPE STRING,
ISSUE_TYPE TYPE STRING,
I_OBJ_TYPE_CD TYPE STRING,
I_OBJ_ID TYPE STRING,
I_OBJ_SRC_SYS TYPE STRING,
I_OBJ_ADD_FIELD1 TYPE STRING,
I_OBJ_ADD_FIELD2 TYPE STRING,
I_OBJ_ADD_FIELD3 TYPE STRING,
I_PLA_REF_ID TYPE STRING,
I_PLA_ADD_FIELD1 TYPE STRING,
I_PLA_ADD_FIELD2 TYPE STRING,
I_PLA_ADD_FIELD3 TYPE STRING,
DUE_DATE TYPE STRING,
PARTNER TYPE STRING,
PARTNER_ROLE_CD TYPE STRING,
ACT_DESC_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MOC/S_ACT_EXTRACT_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_/MOC/S_ACT_EXTRACT_STR-ACTIVITY_ID sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-APPLICATION sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-ACT_TEMPLATE sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-ACT_TYPE sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-ACT_CATEGORY sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-AUTH_GROUP sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-ORIGIN_CD sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-RESP_VAL_BOOL sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-RESP_CODE sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-RESP_CODE_GROUP sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-LCYCLE_CD sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-DEFERRAL_CD sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-DIGSIGN_CD sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-CREATED_BY sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-CREATED_ON sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-CHANGED_BY sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-CHANGED_ON sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-PARENT_ACT_ID sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-ISSUE_ID sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-ISSUE_TYPE sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-I_OBJ_TYPE_CD sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-I_OBJ_ID sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-I_OBJ_SRC_SYS sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-I_OBJ_ADD_FIELD1 sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-I_OBJ_ADD_FIELD2 sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-I_OBJ_ADD_FIELD3 sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-I_PLA_REF_ID sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-I_PLA_ADD_FIELD1 sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-I_PLA_ADD_FIELD2 sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-I_PLA_ADD_FIELD3 sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-DUE_DATE sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-PARTNER sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-PARTNER_ROLE_CD sy-vline 
WA_/MOC/S_ACT_EXTRACT_STR-ACT_DESC_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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