ABAP Select data from SAP table CATSAPPR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CATSAPPR 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 CATSAPPR. 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 CATSAPPR 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_CATSAPPR TYPE STANDARD TABLE OF CATSAPPR,
      WA_CATSAPPR TYPE CATSAPPR,
      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: <CATSAPPR> TYPE CATSAPPR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CATSAPPR
*  INTO TABLE @DATA(IT_CATSAPPR2).
*--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_CATSAPPR INDEX 1 INTO DATA(WA_CATSAPPR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CATSAPPR>-ABSTEXT = 1.
<CATSAPPR>-LGARTTEXT = 1.
<CATSAPPR>-PREMTEXT = 1.
<CATSAPPR>-PLANSTEXT = 1.
<CATSAPPR>-HROBJTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CATSAPPR-REJETEXT, sy-vline,
  WA_CATSAPPR-SCOSTTEXT, sy-vline,
  WA_CATSAPPR-RCOSTTEXT, sy-vline,
  WA_CATSAPPR-ACTIVTEXT, sy-vline,
  WA_CATSAPPR-RPROJTEXT, sy-vline,
  WA_CATSAPPR-RKSTRTEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CATSAPPR 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_CATSAPPR 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_CATSAPPR INTO WA_CATSAPPR.


*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_CATSAPPR_STR, 
ABSTEXT TYPE STRING,
LGARTTEXT TYPE STRING,
PREMTEXT TYPE STRING,
PLANSTEXT TYPE STRING,
HROBJTEXT TYPE STRING,
REJETEXT TYPE STRING,
SCOSTTEXT TYPE STRING,
RCOSTTEXT TYPE STRING,
ACTIVTEXT TYPE STRING,
RPROJTEXT TYPE STRING,
RKSTRTEXT TYPE STRING,
RKDAUFTEXT TYPE STRING,
RPRZNRTEXT TYPE STRING,
STATUSTEXT TYPE STRING,
ORDERTEXT TYPE STRING,
NETTEXT TYPE STRING,
OPERATEXT TYPE STRING,
SOPERATEXT TYPE STRING,
WORKTEXT TYPE STRING,
ENAME TYPE STRING,
PERNR TYPE STRING,
CHECKBOX TYPE STRING,
XFELD TYPE STRING,
CPRO_TEXT TYPE STRING,
CPRO_OBJTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CATSAPPR_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_CATSAPPR_STR-ABSTEXT sy-vline 
WA_CATSAPPR_STR-LGARTTEXT sy-vline 
WA_CATSAPPR_STR-PREMTEXT sy-vline 
WA_CATSAPPR_STR-PLANSTEXT sy-vline 
WA_CATSAPPR_STR-HROBJTEXT sy-vline 
WA_CATSAPPR_STR-REJETEXT sy-vline 
WA_CATSAPPR_STR-SCOSTTEXT sy-vline 
WA_CATSAPPR_STR-RCOSTTEXT sy-vline 
WA_CATSAPPR_STR-ACTIVTEXT sy-vline 
WA_CATSAPPR_STR-RPROJTEXT sy-vline 
WA_CATSAPPR_STR-RKSTRTEXT sy-vline 
WA_CATSAPPR_STR-RKDAUFTEXT sy-vline 
WA_CATSAPPR_STR-RPRZNRTEXT sy-vline 
WA_CATSAPPR_STR-STATUSTEXT sy-vline 
WA_CATSAPPR_STR-ORDERTEXT sy-vline 
WA_CATSAPPR_STR-NETTEXT sy-vline 
WA_CATSAPPR_STR-OPERATEXT sy-vline 
WA_CATSAPPR_STR-SOPERATEXT sy-vline 
WA_CATSAPPR_STR-WORKTEXT sy-vline 
WA_CATSAPPR_STR-ENAME sy-vline 
WA_CATSAPPR_STR-PERNR sy-vline 
WA_CATSAPPR_STR-CHECKBOX sy-vline 
WA_CATSAPPR_STR-XFELD sy-vline 
WA_CATSAPPR_STR-CPRO_TEXT sy-vline 
WA_CATSAPPR_STR-CPRO_OBJTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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