ABAP Select data from SAP table RCOSTR into internal table

Get Example source ABAP code based on a different SAP table
  

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCOSTR
*  INTO TABLE @DATA(IT_RCOSTR2).
*--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_RCOSTR INDEX 1 INTO DATA(WA_RCOSTR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RCOSTR ASSIGNING <RCOSTR>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCOSTR>-MELDG = 1.
<RCOSTR>-VORGA = 1.
<RCOSTR>-MKWRT = 1.
<RCOSTR>-CSTYP = 1.
<RCOSTR>-MSMKM = 1.
ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCOSTR-AUTOVAL, sy-vline,
WA_RCOSTR-ATNAM, sy-vline,
WA_RCOSTR-ATBEZ, sy-vline,
WA_RCOSTR-TXTRF, sy-vline,
WA_RCOSTR-ATFKT, sy-vline,
WA_RCOSTR-DINST, sy-vline.
ENDLOOP. *Add any further fields from structure WA_RCOSTR 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_RCOSTR 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_RCOSTR INTO WA_RCOSTR. *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_RCOSTR_STR,
MELDG TYPE STRING,
VORGA TYPE STRING,
MKWRT TYPE STRING,
CSTYP TYPE STRING,
MSMKM TYPE STRING,
AUTOVAL TYPE STRING,
ATNAM TYPE STRING,
ATBEZ TYPE STRING,
TXTRF TYPE STRING,
ATFKT TYPE STRING,
DINST TYPE STRING,
ATTBL TYPE STRING,
ATFLD TYPE STRING,END OF T_EKKO_STR. DATA: WA_RCOSTR_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_RCOSTR_STR-MELDG sy-vline
WA_RCOSTR_STR-VORGA sy-vline
WA_RCOSTR_STR-MKWRT sy-vline
WA_RCOSTR_STR-CSTYP sy-vline
WA_RCOSTR_STR-MSMKM sy-vline
WA_RCOSTR_STR-AUTOVAL sy-vline
WA_RCOSTR_STR-ATNAM sy-vline
WA_RCOSTR_STR-ATBEZ sy-vline
WA_RCOSTR_STR-TXTRF sy-vline
WA_RCOSTR_STR-ATFKT sy-vline
WA_RCOSTR_STR-DINST sy-vline
WA_RCOSTR_STR-ATTBL sy-vline
WA_RCOSTR_STR-ATFLD sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.