ABAP Select data from SAP table EAM_S_DOC_LAST_APPROVER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EAM_S_DOC_LAST_APPROVER
*  INTO TABLE @DATA(IT_EAM_S_DOC_LAST_APPROVER2).
*--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_EAM_S_DOC_LAST_APPROVER INDEX 1 INTO DATA(WA_EAM_S_DOC_LAST_APPROVER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EAM_S_DOC_LAST_APPROVER>-DOC_NUMBER = 1.
<EAM_S_DOC_LAST_APPROVER>-FLOW_WIID = 1.
<EAM_S_DOC_LAST_APPROVER>-TASK_WIID = 1.
<EAM_S_DOC_LAST_APPROVER>-WI_TYPE = 1.
<EAM_S_DOC_LAST_APPROVER>-WI_STATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EAM_S_DOC_LAST_APPROVER-APPR_STATUS_TEXT, sy-vline,
  WA_EAM_S_DOC_LAST_APPROVER-WI_AAGENT, sy-vline,
  WA_EAM_S_DOC_LAST_APPROVER-WI_CRTTS, sy-vline,
  WA_EAM_S_DOC_LAST_APPROVER-WI_AED, sy-vline,
  WA_EAM_S_DOC_LAST_APPROVER-WI_AET, sy-vline,
  WA_EAM_S_DOC_LAST_APPROVER-PERS_NO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EAM_S_DOC_LAST_APPROVER 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_EAM_S_DOC_LAST_APPROVER 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_EAM_S_DOC_LAST_APPROVER INTO WA_EAM_S_DOC_LAST_APPROVER.


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

*Conversion exit ALPHA, internal->external for field PERS_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EAM_S_DOC_LAST_APPROVER-PERS_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EAM_S_DOC_LAST_APPROVER-PERS_NO.
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_EAM_S_DOC_LAST_APPROVER_STR, 
DOC_NUMBER TYPE STRING,
FLOW_WIID TYPE STRING,
TASK_WIID TYPE STRING,
WI_TYPE TYPE STRING,
WI_STATUS TYPE STRING,
APPR_STATUS_TEXT TYPE STRING,
WI_AAGENT TYPE STRING,
WI_CRTTS TYPE STRING,
WI_AED TYPE STRING,
WI_AET TYPE STRING,
PERS_NO TYPE STRING,
FULLNAME TYPE STRING,
FIRSTNAME TYPE STRING,
MIDDLENAME TYPE STRING,
LASTNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EAM_S_DOC_LAST_APPROVER_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_EAM_S_DOC_LAST_APPROVER_STR-DOC_NUMBER sy-vline 
WA_EAM_S_DOC_LAST_APPROVER_STR-FLOW_WIID sy-vline 
WA_EAM_S_DOC_LAST_APPROVER_STR-TASK_WIID sy-vline 
WA_EAM_S_DOC_LAST_APPROVER_STR-WI_TYPE sy-vline 
WA_EAM_S_DOC_LAST_APPROVER_STR-WI_STATUS sy-vline 
WA_EAM_S_DOC_LAST_APPROVER_STR-APPR_STATUS_TEXT sy-vline 
WA_EAM_S_DOC_LAST_APPROVER_STR-WI_AAGENT sy-vline 
WA_EAM_S_DOC_LAST_APPROVER_STR-WI_CRTTS sy-vline 
WA_EAM_S_DOC_LAST_APPROVER_STR-WI_AED sy-vline 
WA_EAM_S_DOC_LAST_APPROVER_STR-WI_AET sy-vline 
WA_EAM_S_DOC_LAST_APPROVER_STR-PERS_NO sy-vline 
WA_EAM_S_DOC_LAST_APPROVER_STR-FULLNAME sy-vline 
WA_EAM_S_DOC_LAST_APPROVER_STR-FIRSTNAME sy-vline 
WA_EAM_S_DOC_LAST_APPROVER_STR-MIDDLENAME sy-vline 
WA_EAM_S_DOC_LAST_APPROVER_STR-LASTNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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