ABAP Select data from SAP table CHSSFSICHAPTER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CHSSFSICHAPTER
*  INTO TABLE @DATA(IT_CHSSFSICHAPTER2).
*--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_CHSSFSICHAPTER INDEX 1 INTO DATA(WA_CHSSFSICHAPTER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CHSSFSICHAPTER>-MANDT = 1.
<CHSSFSICHAPTER>-SAFETYINSTRUCTIONCHAPTERUUID = 1.
<CHSSFSICHAPTER>-SAFETYINSTRUCTIONUUID = 1.
<CHSSFSICHAPTER>-SAFETYINSTRUCTIONCHAPTERTYPE = 1.
<CHSSFSICHAPTER>-SAFETYINSTRUCTIONCHAPTERTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CHSSFSICHAPTER-SFTYINSTRNADDLCHAPTERTEXT, sy-vline,
  WA_CHSSFSICHAPTER-SAFETYINSTRUCTIONCHAPTERNUMBER, sy-vline,
  WA_CHSSFSICHAPTER-SFTYINSTRNADDLCHAPTERTXTISUSED, sy-vline,
  WA_CHSSFSICHAPTER-SFTYINSTRNCHAPTERTXTISEDITABLE, sy-vline,
  WA_CHSSFSICHAPTER-SAFETYINSTRNCHAPTERTYPETEXT, sy-vline,
  WA_CHSSFSICHAPTER-GHSSIGNALWORDNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CHSSFSICHAPTER 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_CHSSFSICHAPTER 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_CHSSFSICHAPTER INTO WA_CHSSFSICHAPTER.


*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_CHSSFSICHAPTER_STR, 
MANDT TYPE STRING,
SAFETYINSTRUCTIONCHAPTERUUID TYPE STRING,
SAFETYINSTRUCTIONUUID TYPE STRING,
SAFETYINSTRUCTIONCHAPTERTYPE TYPE STRING,
SAFETYINSTRUCTIONCHAPTERTEXT TYPE STRING,
SFTYINSTRNADDLCHAPTERTEXT TYPE STRING,
SAFETYINSTRUCTIONCHAPTERNUMBER TYPE STRING,
SFTYINSTRNADDLCHAPTERTXTISUSED TYPE STRING,
SFTYINSTRNCHAPTERTXTISEDITABLE TYPE STRING,
SAFETYINSTRNCHAPTERTYPETEXT TYPE STRING,
GHSSIGNALWORDNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CHSSFSICHAPTER_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_CHSSFSICHAPTER_STR-MANDT sy-vline 
WA_CHSSFSICHAPTER_STR-SAFETYINSTRUCTIONCHAPTERUUID sy-vline 
WA_CHSSFSICHAPTER_STR-SAFETYINSTRUCTIONUUID sy-vline 
WA_CHSSFSICHAPTER_STR-SAFETYINSTRUCTIONCHAPTERTYPE sy-vline 
WA_CHSSFSICHAPTER_STR-SAFETYINSTRUCTIONCHAPTERTEXT sy-vline 
WA_CHSSFSICHAPTER_STR-SFTYINSTRNADDLCHAPTERTEXT sy-vline 
WA_CHSSFSICHAPTER_STR-SAFETYINSTRUCTIONCHAPTERNUMBER sy-vline 
WA_CHSSFSICHAPTER_STR-SFTYINSTRNADDLCHAPTERTXTISUSED sy-vline 
WA_CHSSFSICHAPTER_STR-SFTYINSTRNCHAPTERTXTISEDITABLE sy-vline 
WA_CHSSFSICHAPTER_STR-SAFETYINSTRNCHAPTERTYPETEXT sy-vline 
WA_CHSSFSICHAPTER_STR-GHSSIGNALWORDNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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