ABAP Select data from SAP table LCA_PROREC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LCA_PROREC
*  INTO TABLE @DATA(IT_LCA_PROREC2).
*--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_LCA_PROREC INDEX 1 INTO DATA(WA_LCA_PROREC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LCA_PROREC>-TABIX = 1.
<LCA_PROREC>-PROFSESSION = 1.
<LCA_PROREC>-SIMSESSION = 1.
<LCA_PROREC>-LCSESSION = 1.
<LCA_PROREC>-CLIENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LCA_PROREC-TRANSACT, sy-vline,
  WA_LCA_PROREC-REPORT, sy-vline,
  WA_LCA_PROREC-UNAME, sy-vline,
  WA_LCA_PROREC-COMNAME, sy-vline,
  WA_LCA_PROREC-CALLER, sy-vline,
  WA_LCA_PROREC-FUNCNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LCA_PROREC 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_LCA_PROREC 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_LCA_PROREC INTO WA_LCA_PROREC.


*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_LCA_PROREC_STR, 
TABIX TYPE STRING,
PROFSESSION TYPE STRING,
SIMSESSION TYPE STRING,
LCSESSION TYPE STRING,
CLIENT TYPE STRING,
TRANSACT TYPE STRING,
REPORT TYPE STRING,
UNAME TYPE STRING,
COMNAME TYPE STRING,
CALLER TYPE STRING,
FUNCNAME TYPE STRING,
FUNCSECT TYPE STRING,
CALLS TYPE STRING,
TOTAL TYPE STRING,
MINIMUM TYPE STRING,
MAXIMUM TYPE STRING,
AVERAGE TYPE STRING,
ACCUMUL TYPE STRING,
PERCENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LCA_PROREC_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_LCA_PROREC_STR-TABIX sy-vline 
WA_LCA_PROREC_STR-PROFSESSION sy-vline 
WA_LCA_PROREC_STR-SIMSESSION sy-vline 
WA_LCA_PROREC_STR-LCSESSION sy-vline 
WA_LCA_PROREC_STR-CLIENT sy-vline 
WA_LCA_PROREC_STR-TRANSACT sy-vline 
WA_LCA_PROREC_STR-REPORT sy-vline 
WA_LCA_PROREC_STR-UNAME sy-vline 
WA_LCA_PROREC_STR-COMNAME sy-vline 
WA_LCA_PROREC_STR-CALLER sy-vline 
WA_LCA_PROREC_STR-FUNCNAME sy-vline 
WA_LCA_PROREC_STR-FUNCSECT sy-vline 
WA_LCA_PROREC_STR-CALLS sy-vline 
WA_LCA_PROREC_STR-TOTAL sy-vline 
WA_LCA_PROREC_STR-MINIMUM sy-vline 
WA_LCA_PROREC_STR-MAXIMUM sy-vline 
WA_LCA_PROREC_STR-AVERAGE sy-vline 
WA_LCA_PROREC_STR-ACCUMUL sy-vline 
WA_LCA_PROREC_STR-PERCENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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