ABAP Select data from SAP table RLACSTIT_01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RLACSTIT_01 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 RLACSTIT_01. 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 RLACSTIT_01 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_RLACSTIT_01 TYPE STANDARD TABLE OF RLACSTIT_01,
      WA_RLACSTIT_01 TYPE RLACSTIT_01,
      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: <RLACSTIT_01> TYPE RLACSTIT_01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RLACSTIT_01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RLACSTIT_01
  INTO TABLE IT_RLACSTIT_01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RLACSTIT_01
*  INTO TABLE @DATA(IT_RLACSTIT_012).
*--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_RLACSTIT_01 INDEX 1 INTO DATA(WA_RLACSTIT_012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RLACSTIT_01 ASSIGNING <RLACSTIT_01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RLACSTIT_01>-LIGHTS = 1.
<RLACSTIT_01>-MANDT = 1.
<RLACSTIT_01>-ACSTNO = 1.
<RLACSTIT_01>-ACSTIT = 1.
<RLACSTIT_01>-CHNGTYPE = 1.

ENDLOOP.

LOOP AT IT_RLACSTIT_01 INTO WA_RLACSTIT_01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RLACSTIT_01-TRANSTYPE, sy-vline,
  WA_RLACSTIT_01-TRANSQUAN, sy-vline,
  WA_RLACSTIT_01-TRANSDATE, sy-vline,
  WA_RLACSTIT_01-DOCNO, sy-vline,
  WA_RLACSTIT_01-DOCIT, sy-vline,
  WA_RLACSTIT_01-DOCDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RLACSTIT_01 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_RLACSTIT_01 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_RLACSTIT_01 INTO WA_RLACSTIT_01.


*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 ALPHA, internal->external for field ACSTNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RLACSTIT_01-ACSTNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RLACSTIT_01-ACSTNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOCNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RLACSTIT_01-DOCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RLACSTIT_01-DOCNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFDOCNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RLACSTIT_01-REFDOCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RLACSTIT_01-REFDOCNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ACSTUM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RLACSTIT_01-ACSTUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RLACSTIT_01-ACSTUM.
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_RLACSTIT_01_STR, 
LIGHTS TYPE STRING,
MANDT TYPE STRING,
ACSTNO TYPE STRING,
ACSTIT TYPE STRING,
CHNGTYPE TYPE STRING,
TRANSTYPE TYPE STRING,
TRANSQUAN TYPE STRING,
TRANSDATE TYPE STRING,
DOCNO TYPE STRING,
DOCIT TYPE STRING,
DOCDATE TYPE STRING,
DELIVDATE TYPE STRING,
CUSTNO TYPE STRING,
SUPPNO TYPE STRING,
TRANSPTN TYPE STRING,
REFDOCNO TYPE STRING,
REFDOCIT TYPE STRING,
REFDOCDATE TYPE STRING,
CPGRPNO TYPE STRING,
CPSTATEIT TYPE STRING,
CPKIND TYPE STRING,
EXP_ITEMS TYPE STRING,
ACSTUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RLACSTIT_01_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_RLACSTIT_01_STR-LIGHTS sy-vline 
WA_RLACSTIT_01_STR-MANDT sy-vline 
WA_RLACSTIT_01_STR-ACSTNO sy-vline 
WA_RLACSTIT_01_STR-ACSTIT sy-vline 
WA_RLACSTIT_01_STR-CHNGTYPE sy-vline 
WA_RLACSTIT_01_STR-TRANSTYPE sy-vline 
WA_RLACSTIT_01_STR-TRANSQUAN sy-vline 
WA_RLACSTIT_01_STR-TRANSDATE sy-vline 
WA_RLACSTIT_01_STR-DOCNO sy-vline 
WA_RLACSTIT_01_STR-DOCIT sy-vline 
WA_RLACSTIT_01_STR-DOCDATE sy-vline 
WA_RLACSTIT_01_STR-DELIVDATE sy-vline 
WA_RLACSTIT_01_STR-CUSTNO sy-vline 
WA_RLACSTIT_01_STR-SUPPNO sy-vline 
WA_RLACSTIT_01_STR-TRANSPTN sy-vline 
WA_RLACSTIT_01_STR-REFDOCNO sy-vline 
WA_RLACSTIT_01_STR-REFDOCIT sy-vline 
WA_RLACSTIT_01_STR-REFDOCDATE sy-vline 
WA_RLACSTIT_01_STR-CPGRPNO sy-vline 
WA_RLACSTIT_01_STR-CPSTATEIT sy-vline 
WA_RLACSTIT_01_STR-CPKIND sy-vline 
WA_RLACSTIT_01_STR-EXP_ITEMS sy-vline 
WA_RLACSTIT_01_STR-ACSTUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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