ABAP Select data from SAP table CATS_S_CHECK_EA_REC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CATS_S_CHECK_EA_REC
*  INTO TABLE @DATA(IT_CATS_S_CHECK_EA_REC2).
*--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_CATS_S_CHECK_EA_REC INDEX 1 INTO DATA(WA_CATS_S_CHECK_EA_REC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CATS_S_CHECK_EA_REC>-MANDT = 1.
<CATS_S_CHECK_EA_REC>-COUNTER = 1.
<CATS_S_CHECK_EA_REC>-PERNR = 1.
<CATS_S_CHECK_EA_REC>-WORKDATE = 1.
<CATS_S_CHECK_EA_REC>-CATSQUANTITY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CATS_S_CHECK_EA_REC-UNIT, sy-vline,
  WA_CATS_S_CHECK_EA_REC-REVERSED, sy-vline,
  WA_CATS_S_CHECK_EA_REC-LSTAR, sy-vline,
  WA_CATS_S_CHECK_EA_REC-RPROJ, sy-vline,
  WA_CATS_S_CHECK_EA_REC-RAUFNR, sy-vline,
  WA_CATS_S_CHECK_EA_REC-RKDAUF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CATS_S_CHECK_EA_REC 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_CATS_S_CHECK_EA_REC 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_CATS_S_CHECK_EA_REC INTO WA_CATS_S_CHECK_EA_REC.


*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 CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CATS_S_CHECK_EA_REC-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATS_S_CHECK_EA_REC-UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field RPROJ
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CATS_S_CHECK_EA_REC-RPROJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATS_S_CHECK_EA_REC-RPROJ.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field RKDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CATS_S_CHECK_EA_REC-RKDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATS_S_CHECK_EA_REC-RKDAUF.
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_CATS_S_CHECK_EA_REC_STR, 
MANDT TYPE STRING,
COUNTER TYPE STRING,
PERNR TYPE STRING,
WORKDATE TYPE STRING,
CATSQUANTITY TYPE STRING,
UNIT TYPE STRING,
REVERSED TYPE STRING,
LSTAR TYPE STRING,
RPROJ TYPE STRING,
RAUFNR TYPE STRING,
RKDAUF TYPE STRING,
RKDPOS TYPE STRING,
TASKTYPE TYPE STRING,
TASKLEVEL TYPE STRING,
TASKCOMPONENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CATS_S_CHECK_EA_REC_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_CATS_S_CHECK_EA_REC_STR-MANDT sy-vline 
WA_CATS_S_CHECK_EA_REC_STR-COUNTER sy-vline 
WA_CATS_S_CHECK_EA_REC_STR-PERNR sy-vline 
WA_CATS_S_CHECK_EA_REC_STR-WORKDATE sy-vline 
WA_CATS_S_CHECK_EA_REC_STR-CATSQUANTITY sy-vline 
WA_CATS_S_CHECK_EA_REC_STR-UNIT sy-vline 
WA_CATS_S_CHECK_EA_REC_STR-REVERSED sy-vline 
WA_CATS_S_CHECK_EA_REC_STR-LSTAR sy-vline 
WA_CATS_S_CHECK_EA_REC_STR-RPROJ sy-vline 
WA_CATS_S_CHECK_EA_REC_STR-RAUFNR sy-vline 
WA_CATS_S_CHECK_EA_REC_STR-RKDAUF sy-vline 
WA_CATS_S_CHECK_EA_REC_STR-RKDPOS sy-vline 
WA_CATS_S_CHECK_EA_REC_STR-TASKTYPE sy-vline 
WA_CATS_S_CHECK_EA_REC_STR-TASKLEVEL sy-vline 
WA_CATS_S_CHECK_EA_REC_STR-TASKCOMPONENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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