ABAP Select data from SAP table RJHAISZX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJHAISZX
*  INTO TABLE @DATA(IT_RJHAISZX2).
*--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_RJHAISZX INDEX 1 INTO DATA(WA_RJHAISZX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJHAISZX>-MANDT = 1.
<RJHAISZX>-AVM_NR = 1.
<RJHAISZX>-POS_NR = 1.
<RJHAISZX>-INSERENT = 1.
<RJHAISZX>-UPDATEFLAG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJHAISZX-XINSBLANK, sy-vline,
  WA_RJHAISZX-INSZ_NR, sy-vline,
  WA_RJHAISZX-INS_PROZ, sy-vline,
  WA_RJHAISZX-REGULIERER, sy-vline,
  WA_RJHAISZX-TAXK1, sy-vline,
  WA_RJHAISZX-TAXK2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJHAISZX 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_RJHAISZX 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_RJHAISZX INTO WA_RJHAISZX.


*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 AVM_NR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJHAISZX-AVM_NR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJHAISZX-AVM_NR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INSERENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJHAISZX-INSERENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJHAISZX-INSERENT.
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_RJHAISZX_STR, 
MANDT TYPE STRING,
AVM_NR TYPE STRING,
POS_NR TYPE STRING,
INSERENT TYPE STRING,
UPDATEFLAG TYPE STRING,
XINSBLANK TYPE STRING,
INSZ_NR TYPE STRING,
INS_PROZ TYPE STRING,
REGULIERER TYPE STRING,
TAXK1 TYPE STRING,
TAXK2 TYPE STRING,
TAXK3 TYPE STRING,
TAXK4 TYPE STRING,
TAXK5 TYPE STRING,
TAXK6 TYPE STRING,
TAXK7 TYPE STRING,
TAXK8 TYPE STRING,
TAXK9 TYPE STRING,
GPNR_RECH TYPE STRING,
KONDA TYPE STRING,
XORTSPREIS TYPE STRING,
ZLSCH TYPE STRING,
AE TYPE STRING,
BVTYP TYPE STRING,
CCINS TYPE STRING,
CCNUM TYPE STRING,
DATBI TYPE STRING,
CCNAME TYPE STRING,
CVVAL TYPE STRING,
CVVCT TYPE STRING,
CVVST TYPE STRING,
BRAN1 TYPE STRING,
ADV_AD_SIZE TYPE STRING,
MNDID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJHAISZX_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_RJHAISZX_STR-MANDT sy-vline 
WA_RJHAISZX_STR-AVM_NR sy-vline 
WA_RJHAISZX_STR-POS_NR sy-vline 
WA_RJHAISZX_STR-INSERENT sy-vline 
WA_RJHAISZX_STR-UPDATEFLAG sy-vline 
WA_RJHAISZX_STR-XINSBLANK sy-vline 
WA_RJHAISZX_STR-INSZ_NR sy-vline 
WA_RJHAISZX_STR-INS_PROZ sy-vline 
WA_RJHAISZX_STR-REGULIERER sy-vline 
WA_RJHAISZX_STR-TAXK1 sy-vline 
WA_RJHAISZX_STR-TAXK2 sy-vline 
WA_RJHAISZX_STR-TAXK3 sy-vline 
WA_RJHAISZX_STR-TAXK4 sy-vline 
WA_RJHAISZX_STR-TAXK5 sy-vline 
WA_RJHAISZX_STR-TAXK6 sy-vline 
WA_RJHAISZX_STR-TAXK7 sy-vline 
WA_RJHAISZX_STR-TAXK8 sy-vline 
WA_RJHAISZX_STR-TAXK9 sy-vline 
WA_RJHAISZX_STR-GPNR_RECH sy-vline 
WA_RJHAISZX_STR-KONDA sy-vline 
WA_RJHAISZX_STR-XORTSPREIS sy-vline 
WA_RJHAISZX_STR-ZLSCH sy-vline 
WA_RJHAISZX_STR-AE sy-vline 
WA_RJHAISZX_STR-BVTYP sy-vline 
WA_RJHAISZX_STR-CCINS sy-vline 
WA_RJHAISZX_STR-CCNUM sy-vline 
WA_RJHAISZX_STR-DATBI sy-vline 
WA_RJHAISZX_STR-CCNAME sy-vline 
WA_RJHAISZX_STR-CVVAL sy-vline 
WA_RJHAISZX_STR-CVVCT sy-vline 
WA_RJHAISZX_STR-CVVST sy-vline 
WA_RJHAISZX_STR-BRAN1 sy-vline 
WA_RJHAISZX_STR-ADV_AD_SIZE sy-vline 
WA_RJHAISZX_STR-MNDID sy-vline      INTO ld_text SEPARATED BY SPACE.

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