ABAP Select data from SAP table CRMT_ISU_PRC_SIMU_DOC_H into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMT_ISU_PRC_SIMU_DOC_H
*  INTO TABLE @DATA(IT_CRMT_ISU_PRC_SIMU_DOC_H2).
*--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_CRMT_ISU_PRC_SIMU_DOC_H INDEX 1 INTO DATA(WA_CRMT_ISU_PRC_SIMU_DOC_H2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMT_ISU_PRC_SIMU_DOC_H>-DOCUMENTID = 1.
<CRMT_ISU_PRC_SIMU_DOC_H>-TOTALNETAMOUNT = 1.
<CRMT_ISU_PRC_SIMU_DOC_H>-TOTALTAXAMOUNT = 1.
<CRMT_ISU_PRC_SIMU_DOC_H>-TOTALGROSSAMOUNT = 1.
<CRMT_ISU_PRC_SIMU_DOC_H>-BILLINGPERIODSTART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMT_ISU_PRC_SIMU_DOC_H-BILLINGPERIODEND, sy-vline,
  WA_CRMT_ISU_PRC_SIMU_DOC_H-BUSINESSPARTNERID, sy-vline,
  WA_CRMT_ISU_PRC_SIMU_DOC_H-CONTRACTID, sy-vline,
  WA_CRMT_ISU_PRC_SIMU_DOC_H-CONTRACTACCOUNTID, sy-vline,
  WA_CRMT_ISU_PRC_SIMU_DOC_H-DIVISIONCODE, sy-vline,
  WA_CRMT_ISU_PRC_SIMU_DOC_H-MAINTRANSACTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMT_ISU_PRC_SIMU_DOC_H 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_CRMT_ISU_PRC_SIMU_DOC_H 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_CRMT_ISU_PRC_SIMU_DOC_H INTO WA_CRMT_ISU_PRC_SIMU_DOC_H.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CRMT_ISU_PRC_SIMU_DOC_H_STR, 
DOCUMENTID TYPE STRING,
TOTALNETAMOUNT TYPE STRING,
TOTALTAXAMOUNT TYPE STRING,
TOTALGROSSAMOUNT TYPE STRING,
BILLINGPERIODSTART TYPE STRING,
BILLINGPERIODEND TYPE STRING,
BUSINESSPARTNERID TYPE STRING,
CONTRACTID TYPE STRING,
CONTRACTACCOUNTID TYPE STRING,
DIVISIONCODE TYPE STRING,
MAINTRANSACTION TYPE STRING,
TAXJURISDICTIONCODE TYPE STRING,
CURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMT_ISU_PRC_SIMU_DOC_H_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_CRMT_ISU_PRC_SIMU_DOC_H_STR-DOCUMENTID sy-vline 
WA_CRMT_ISU_PRC_SIMU_DOC_H_STR-TOTALNETAMOUNT sy-vline 
WA_CRMT_ISU_PRC_SIMU_DOC_H_STR-TOTALTAXAMOUNT sy-vline 
WA_CRMT_ISU_PRC_SIMU_DOC_H_STR-TOTALGROSSAMOUNT sy-vline 
WA_CRMT_ISU_PRC_SIMU_DOC_H_STR-BILLINGPERIODSTART sy-vline 
WA_CRMT_ISU_PRC_SIMU_DOC_H_STR-BILLINGPERIODEND sy-vline 
WA_CRMT_ISU_PRC_SIMU_DOC_H_STR-BUSINESSPARTNERID sy-vline 
WA_CRMT_ISU_PRC_SIMU_DOC_H_STR-CONTRACTID sy-vline 
WA_CRMT_ISU_PRC_SIMU_DOC_H_STR-CONTRACTACCOUNTID sy-vline 
WA_CRMT_ISU_PRC_SIMU_DOC_H_STR-DIVISIONCODE sy-vline 
WA_CRMT_ISU_PRC_SIMU_DOC_H_STR-MAINTRANSACTION sy-vline 
WA_CRMT_ISU_PRC_SIMU_DOC_H_STR-TAXJURISDICTIONCODE sy-vline 
WA_CRMT_ISU_PRC_SIMU_DOC_H_STR-CURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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