ABAP Select data from SAP table EWAOBJD_HIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWAOBJD_HIST
*  INTO TABLE @DATA(IT_EWAOBJD_HIST2).
*--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_EWAOBJD_HIST INDEX 1 INTO DATA(WA_EWAOBJD_HIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWAOBJD_HIST>-AB = 1.
<EWAOBJD_HIST>-BIS = 1.
<EWAOBJD_HIST>-STARTDATE = 1.
<EWAOBJD_HIST>-STATUS_SERV = 1.
<EWAOBJD_HIST>-STATUS_CUST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWAOBJD_HIST-STARTTIME, sy-vline,
  WA_EWAOBJD_HIST-STOPTIME, sy-vline,
  WA_EWAOBJD_HIST-TIMEFRAME, sy-vline,
  WA_EWAOBJD_HIST-WEEKLY, sy-vline,
  WA_EWAOBJD_HIST-MONTHLY, sy-vline,
  WA_EWAOBJD_HIST-MONTH_COUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWAOBJD_HIST 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_EWAOBJD_HIST 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_EWAOBJD_HIST INTO WA_EWAOBJD_HIST.


*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 MM_TT, internal->external for field SEASON_FROM
CALL FUNCTION 'CONVERSION_EXIT_MM_TT_OUTPUT'
  EXPORTING
    input =                      WA_EWAOBJD_HIST-SEASON_FROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAOBJD_HIST-SEASON_FROM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MM_TT, internal->external for field SEASON_TO
CALL FUNCTION 'CONVERSION_EXIT_MM_TT_OUTPUT'
  EXPORTING
    input =                      WA_EWAOBJD_HIST-SEASON_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAOBJD_HIST-SEASON_TO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field UPOS
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_EWAOBJD_HIST-UPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAOBJD_HIST-UPOS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field VBELN_SHARE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWAOBJD_HIST-VBELN_SHARE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAOBJD_HIST-VBELN_SHARE.
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_EWAOBJD_HIST_STR, 
AB TYPE STRING,
BIS TYPE STRING,
STARTDATE TYPE STRING,
STATUS_SERV TYPE STRING,
STATUS_CUST TYPE STRING,
STARTTIME TYPE STRING,
STOPTIME TYPE STRING,
TIMEFRAME TYPE STRING,
WEEKLY TYPE STRING,
MONTHLY TYPE STRING,
MONTH_COUNT TYPE STRING,
DATECHANGE TYPE STRING,
STICHTAG TYPE STRING,
DAY_NO TYPE STRING,
DAY_ONCE TYPE STRING,
DAY_PERD TYPE STRING,
DAY_TXT TYPE STRING,
DATAB TYPE STRING,
SEASON_FROM TYPE STRING,
SEASON_TO TYPE STRING,
SELAB TYPE STRING,
SELBIS TYPE STRING,
SERV_DATE TYPE STRING,
CAL_ID TYPE STRING,
SERVICE_TYPE TYPE STRING,
DIFFCULT TYPE STRING,
DIFFCTXT TYPE STRING,
FREQZUS TYPE STRING,
GGVERTRAG TYPE STRING,
UPOS TYPE STRING,
CAPACITYKIND TYPE STRING,
SERVICE_GROUP TYPE STRING,
ABRKZ TYPE STRING,
FLGDLY TYPE STRING,
DAY_FREQUENCY TYPE STRING,
CONTSHARE TYPE STRING,
VBELNPOSNR TYPE STRING,
VBELN_SHARE TYPE STRING,
POSNR_SHARE TYPE STRING,
PLANNED_TIME TYPE STRING,
PLANNED_DURT TYPE STRING,
TSL_GUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWAOBJD_HIST_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_EWAOBJD_HIST_STR-AB sy-vline 
WA_EWAOBJD_HIST_STR-BIS sy-vline 
WA_EWAOBJD_HIST_STR-STARTDATE sy-vline 
WA_EWAOBJD_HIST_STR-STATUS_SERV sy-vline 
WA_EWAOBJD_HIST_STR-STATUS_CUST sy-vline 
WA_EWAOBJD_HIST_STR-STARTTIME sy-vline 
WA_EWAOBJD_HIST_STR-STOPTIME sy-vline 
WA_EWAOBJD_HIST_STR-TIMEFRAME sy-vline 
WA_EWAOBJD_HIST_STR-WEEKLY sy-vline 
WA_EWAOBJD_HIST_STR-MONTHLY sy-vline 
WA_EWAOBJD_HIST_STR-MONTH_COUNT sy-vline 
WA_EWAOBJD_HIST_STR-DATECHANGE sy-vline 
WA_EWAOBJD_HIST_STR-STICHTAG sy-vline 
WA_EWAOBJD_HIST_STR-DAY_NO sy-vline 
WA_EWAOBJD_HIST_STR-DAY_ONCE sy-vline 
WA_EWAOBJD_HIST_STR-DAY_PERD sy-vline 
WA_EWAOBJD_HIST_STR-DAY_TXT sy-vline 
WA_EWAOBJD_HIST_STR-DATAB sy-vline 
WA_EWAOBJD_HIST_STR-SEASON_FROM sy-vline 
WA_EWAOBJD_HIST_STR-SEASON_TO sy-vline 
WA_EWAOBJD_HIST_STR-SELAB sy-vline 
WA_EWAOBJD_HIST_STR-SELBIS sy-vline 
WA_EWAOBJD_HIST_STR-SERV_DATE sy-vline 
WA_EWAOBJD_HIST_STR-CAL_ID sy-vline 
WA_EWAOBJD_HIST_STR-SERVICE_TYPE sy-vline 
WA_EWAOBJD_HIST_STR-DIFFCULT sy-vline 
WA_EWAOBJD_HIST_STR-DIFFCTXT sy-vline 
WA_EWAOBJD_HIST_STR-FREQZUS sy-vline 
WA_EWAOBJD_HIST_STR-GGVERTRAG sy-vline 
WA_EWAOBJD_HIST_STR-UPOS sy-vline 
WA_EWAOBJD_HIST_STR-CAPACITYKIND sy-vline 
WA_EWAOBJD_HIST_STR-SERVICE_GROUP sy-vline 
WA_EWAOBJD_HIST_STR-ABRKZ sy-vline 
WA_EWAOBJD_HIST_STR-FLGDLY sy-vline 
WA_EWAOBJD_HIST_STR-DAY_FREQUENCY sy-vline 
WA_EWAOBJD_HIST_STR-CONTSHARE sy-vline 
WA_EWAOBJD_HIST_STR-VBELNPOSNR sy-vline 
WA_EWAOBJD_HIST_STR-VBELN_SHARE sy-vline 
WA_EWAOBJD_HIST_STR-POSNR_SHARE sy-vline 
WA_EWAOBJD_HIST_STR-PLANNED_TIME sy-vline 
WA_EWAOBJD_HIST_STR-PLANNED_DURT sy-vline 
WA_EWAOBJD_HIST_STR-TSL_GUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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