ABAP Select data from SAP table CRMS4S_SERV_H_DATES into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CRMS4S_SERV_H_DATES 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 CRMS4S_SERV_H_DATES. 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 CRMS4S_SERV_H_DATES 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_CRMS4S_SERV_H_DATES TYPE STANDARD TABLE OF CRMS4S_SERV_H_DATES,
      WA_CRMS4S_SERV_H_DATES TYPE CRMS4S_SERV_H_DATES,
      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: <CRMS4S_SERV_H_DATES> TYPE CRMS4S_SERV_H_DATES.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CRMS4S_SERV_H_DATES.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CRMS4S_SERV_H_DATES
  INTO TABLE IT_CRMS4S_SERV_H_DATES.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMS4S_SERV_H_DATES
*  INTO TABLE @DATA(IT_CRMS4S_SERV_H_DATES2).
*--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_CRMS4S_SERV_H_DATES INDEX 1 INTO DATA(WA_CRMS4S_SERV_H_DATES2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CRMS4S_SERV_H_DATES ASSIGNING <CRMS4S_SERV_H_DATES>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMS4S_SERV_H_DATES>-VALID_FROM = 1.
<CRMS4S_SERV_H_DATES>-VALID_TO = 1.
<CRMS4S_SERV_H_DATES>-QUOT_START = 1.
<CRMS4S_SERV_H_DATES>-QUOT_END = 1.
<CRMS4S_SERV_H_DATES>-SRV_CUST_BEG = 1.

ENDLOOP.

LOOP AT IT_CRMS4S_SERV_H_DATES INTO WA_CRMS4S_SERV_H_DATES.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMS4S_SERV_H_DATES-SRV_CUST_END, sy-vline,
  WA_CRMS4S_SERV_H_DATES-SRQ_WORK_DURA, sy-vline,
  WA_CRMS4S_SERV_H_DATES-SRQ_WORK_UNIT, sy-vline,
  WA_CRMS4S_SERV_H_DATES-SRQ_TOT_DURA, sy-vline,
  WA_CRMS4S_SERV_H_DATES-SRQ_TOT_UNIT, sy-vline,
  WA_CRMS4S_SERV_H_DATES-CONTSTART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMS4S_SERV_H_DATES 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_CRMS4S_SERV_H_DATES 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_CRMS4S_SERV_H_DATES INTO WA_CRMS4S_SERV_H_DATES.


*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 TSTPS, internal->external for field VALID_FROM
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_SERV_H_DATES-VALID_FROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_SERV_H_DATES-VALID_FROM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field VALID_TO
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_SERV_H_DATES-VALID_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_SERV_H_DATES-VALID_TO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field QUOT_START
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_SERV_H_DATES-QUOT_START
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_SERV_H_DATES-QUOT_START.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field QUOT_END
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_SERV_H_DATES-QUOT_END
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_SERV_H_DATES-QUOT_END.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field AUTO_RENEW_PERIOD_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_SERV_H_DATES-AUTO_RENEW_PERIOD_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_SERV_H_DATES-AUTO_RENEW_PERIOD_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field AUTO_RENEW_EXTEN_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_SERV_H_DATES-AUTO_RENEW_EXTEN_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_SERV_H_DATES-AUTO_RENEW_EXTEN_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field AUTO_RENEW_START
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_SERV_H_DATES-AUTO_RENEW_START
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_SERV_H_DATES-AUTO_RENEW_START.
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_CRMS4S_SERV_H_DATES_STR, 
VALID_FROM TYPE STRING,
VALID_TO TYPE STRING,
QUOT_START TYPE STRING,
QUOT_END TYPE STRING,
SRV_CUST_BEG TYPE STRING,
SRV_CUST_END TYPE STRING,
SRQ_WORK_DURA TYPE STRING,
SRQ_WORK_UNIT TYPE STRING,
SRQ_TOT_DURA TYPE STRING,
SRQ_TOT_UNIT TYPE STRING,
CONTSTART TYPE STRING,
CONTEND TYPE STRING,
CONT_START_TS TYPE STRING,
CONT_END_TS TYPE STRING,
SRV_RFIRST TYPE STRING,
SRV_RREADY TYPE STRING,
SRV_CLOSE TYPE STRING,
AUTO_RENEW_PERIOD TYPE STRING,
AUTO_RENEW_PERIOD_UNIT TYPE STRING,
AUTO_RENEW_EXTEN TYPE STRING,
AUTO_RENEW_EXTEN_UNIT TYPE STRING,
AUTO_RENEW_START TYPE STRING,
SRQ_WORK_DURA_2 TYPE STRING,
SRQ_TOT_DURA_2 TYPE STRING,
DUE_ON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMS4S_SERV_H_DATES_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_CRMS4S_SERV_H_DATES_STR-VALID_FROM sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-VALID_TO sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-QUOT_START sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-QUOT_END sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-SRV_CUST_BEG sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-SRV_CUST_END sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-SRQ_WORK_DURA sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-SRQ_WORK_UNIT sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-SRQ_TOT_DURA sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-SRQ_TOT_UNIT sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-CONTSTART sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-CONTEND sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-CONT_START_TS sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-CONT_END_TS sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-SRV_RFIRST sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-SRV_RREADY sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-SRV_CLOSE sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-AUTO_RENEW_PERIOD sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-AUTO_RENEW_PERIOD_UNIT sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-AUTO_RENEW_EXTEN sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-AUTO_RENEW_EXTEN_UNIT sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-AUTO_RENEW_START sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-SRQ_WORK_DURA_2 sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-SRQ_TOT_DURA_2 sy-vline 
WA_CRMS4S_SERV_H_DATES_STR-DUE_ON sy-vline      INTO ld_text SEPARATED BY SPACE.

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