ABAP Select data from SAP table SAVLCONTHIST_NSIM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SAVLCONTHIST_NSIM
*  INTO TABLE @DATA(IT_SAVLCONTHIST_NSIM2).
*--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_SAVLCONTHIST_NSIM INDEX 1 INTO DATA(WA_SAVLCONTHIST_NSIM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SAVLCONTHIST_NSIM>-MANDT = 1.
<SAVLCONTHIST_NSIM>-CTTIME = 1.
<SAVLCONTHIST_NSIM>-CTDATE = 1.
<SAVLCONTHIST_NSIM>-PARTNER = 1.
<SAVLCONTHIST_NSIM>-PARTNERTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SAVLCONTHIST_NSIM-PARTNERTOWN, sy-vline,
  WA_SAVLCONTHIST_NSIM-CCLASS, sy-vline,
  WA_SAVLCONTHIST_NSIM-CCLASSTXT, sy-vline,
  WA_SAVLCONTHIST_NSIM-ACTIVITY, sy-vline,
  WA_SAVLCONTHIST_NSIM-ACTTXT, sy-vline,
  WA_SAVLCONTHIST_NSIM-PRIORITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SAVLCONTHIST_NSIM 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_SAVLCONTHIST_NSIM 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_SAVLCONTHIST_NSIM INTO WA_SAVLCONTHIST_NSIM.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field ADDINFO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SAVLCONTHIST_NSIM-ADDINFO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SAVLCONTHIST_NSIM-ADDINFO.
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_SAVLCONTHIST_NSIM_STR, 
MANDT TYPE STRING,
CTTIME TYPE STRING,
CTDATE TYPE STRING,
PARTNER TYPE STRING,
PARTNERTXT TYPE STRING,
PARTNERTOWN TYPE STRING,
CCLASS TYPE STRING,
CCLASSTXT TYPE STRING,
ACTIVITY TYPE STRING,
ACTTXT TYPE STRING,
PRIORITY TYPE STRING,
BPCONTACT TYPE STRING,
PCATEGORY TYPE STRING,
ALTPARTNER TYPE STRING,
RLTYP TYPE STRING,
CTYPE TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
BEGRU TYPE STRING,
LOEVM TYPE STRING,
WFID TYPE STRING,
ADDINFO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SAVLCONTHIST_NSIM_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_SAVLCONTHIST_NSIM_STR-MANDT sy-vline 
WA_SAVLCONTHIST_NSIM_STR-CTTIME sy-vline 
WA_SAVLCONTHIST_NSIM_STR-CTDATE sy-vline 
WA_SAVLCONTHIST_NSIM_STR-PARTNER sy-vline 
WA_SAVLCONTHIST_NSIM_STR-PARTNERTXT sy-vline 
WA_SAVLCONTHIST_NSIM_STR-PARTNERTOWN sy-vline 
WA_SAVLCONTHIST_NSIM_STR-CCLASS sy-vline 
WA_SAVLCONTHIST_NSIM_STR-CCLASSTXT sy-vline 
WA_SAVLCONTHIST_NSIM_STR-ACTIVITY sy-vline 
WA_SAVLCONTHIST_NSIM_STR-ACTTXT sy-vline 
WA_SAVLCONTHIST_NSIM_STR-PRIORITY sy-vline 
WA_SAVLCONTHIST_NSIM_STR-BPCONTACT sy-vline 
WA_SAVLCONTHIST_NSIM_STR-PCATEGORY sy-vline 
WA_SAVLCONTHIST_NSIM_STR-ALTPARTNER sy-vline 
WA_SAVLCONTHIST_NSIM_STR-RLTYP sy-vline 
WA_SAVLCONTHIST_NSIM_STR-CTYPE sy-vline 
WA_SAVLCONTHIST_NSIM_STR-AEDAT sy-vline 
WA_SAVLCONTHIST_NSIM_STR-AENAM sy-vline 
WA_SAVLCONTHIST_NSIM_STR-BEGRU sy-vline 
WA_SAVLCONTHIST_NSIM_STR-LOEVM sy-vline 
WA_SAVLCONTHIST_NSIM_STR-WFID sy-vline 
WA_SAVLCONTHIST_NSIM_STR-ADDINFO sy-vline      INTO ld_text SEPARATED BY SPACE.

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