ABAP Select data from SAP table ROIU_PR_CHAH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIU_PR_CHAH
*  INTO TABLE @DATA(IT_ROIU_PR_CHAH2).
*--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_ROIU_PR_CHAH INDEX 1 INTO DATA(WA_ROIU_PR_CHAH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIU_PR_CHAH>-MANDT = 1.
<ROIU_PR_CHAH>-CHAH_NO = 1.
<ROIU_PR_CHAH>-DOC_YEAR = 1.
<ROIU_PR_CHAH>-MP_NO = 1.
<ROIU_PR_CHAH>-EFF_FROM_DT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIU_PR_CHAH-EFF_TO_DT, sy-vline,
  WA_ROIU_PR_CHAH-TYP_ID_NO, sy-vline,
  WA_ROIU_PR_CHAH-STD_PS, sy-vline,
  WA_ROIU_PR_CHAH-STD_PS_U, sy-vline,
  WA_ROIU_PR_CHAH-ANAL_BASIS_CD, sy-vline,
  WA_ROIU_PR_CHAH-TYP_LVL_CD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIU_PR_CHAH 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_ROIU_PR_CHAH 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_ROIU_PR_CHAH INTO WA_ROIU_PR_CHAH.


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

*Conversion exit GJAHR, internal->external for field DOC_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ROIU_PR_CHAH-DOC_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIU_PR_CHAH-DOC_YEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field REF_MP_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIU_PR_CHAH-REF_MP_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIU_PR_CHAH-REF_MP_NO.
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_ROIU_PR_CHAH_STR, 
MANDT TYPE STRING,
CHAH_NO TYPE STRING,
DOC_YEAR TYPE STRING,
MP_NO TYPE STRING,
EFF_FROM_DT TYPE STRING,
EFF_TO_DT TYPE STRING,
TYP_ID_NO TYPE STRING,
STD_PS TYPE STRING,
STD_PS_U TYPE STRING,
ANAL_BASIS_CD TYPE STRING,
TYP_LVL_CD TYPE STRING,
ANAL_CALC_FL TYPE STRING,
ANAL_MP_NO TYPE STRING,
ANAL_TYPE_CD TYPE STRING,
SAMP_PS TYPE STRING,
SAMP_PS_U TYPE STRING,
SAMP_TMP TYPE STRING,
SAMP_TMP_U TYPE STRING,
ATM_PS TYPE STRING,
ATM_PS_U TYPE STRING,
OIU_CRUSER TYPE STRING,
OIU_TIMESTAMP TYPE STRING,
MP_DE TYPE STRING,
ANAL_MP_DE TYPE STRING,
TYP_DE TYPE STRING,
MEAS_GRP TYPE STRING,
MEAS_GRP_DE TYPE STRING,
XXDBACTION TYPE STRING,
MJPDT_CD2 TYPE STRING,
MJPDT_CD4 TYPE STRING,
MEAS_GRP2 TYPE STRING,
MEAS_GRP4 TYPE STRING,
MEAS_GRP2_TX TYPE STRING,
MEAS_GRP4_TX TYPE STRING,
REF_MP_NO TYPE STRING,
REF_MP_DE TYPE STRING,
REF_EFF_FROM_DT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIU_PR_CHAH_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_ROIU_PR_CHAH_STR-MANDT sy-vline 
WA_ROIU_PR_CHAH_STR-CHAH_NO sy-vline 
WA_ROIU_PR_CHAH_STR-DOC_YEAR sy-vline 
WA_ROIU_PR_CHAH_STR-MP_NO sy-vline 
WA_ROIU_PR_CHAH_STR-EFF_FROM_DT sy-vline 
WA_ROIU_PR_CHAH_STR-EFF_TO_DT sy-vline 
WA_ROIU_PR_CHAH_STR-TYP_ID_NO sy-vline 
WA_ROIU_PR_CHAH_STR-STD_PS sy-vline 
WA_ROIU_PR_CHAH_STR-STD_PS_U sy-vline 
WA_ROIU_PR_CHAH_STR-ANAL_BASIS_CD sy-vline 
WA_ROIU_PR_CHAH_STR-TYP_LVL_CD sy-vline 
WA_ROIU_PR_CHAH_STR-ANAL_CALC_FL sy-vline 
WA_ROIU_PR_CHAH_STR-ANAL_MP_NO sy-vline 
WA_ROIU_PR_CHAH_STR-ANAL_TYPE_CD sy-vline 
WA_ROIU_PR_CHAH_STR-SAMP_PS sy-vline 
WA_ROIU_PR_CHAH_STR-SAMP_PS_U sy-vline 
WA_ROIU_PR_CHAH_STR-SAMP_TMP sy-vline 
WA_ROIU_PR_CHAH_STR-SAMP_TMP_U sy-vline 
WA_ROIU_PR_CHAH_STR-ATM_PS sy-vline 
WA_ROIU_PR_CHAH_STR-ATM_PS_U sy-vline 
WA_ROIU_PR_CHAH_STR-OIU_CRUSER sy-vline 
WA_ROIU_PR_CHAH_STR-OIU_TIMESTAMP sy-vline 
WA_ROIU_PR_CHAH_STR-MP_DE sy-vline 
WA_ROIU_PR_CHAH_STR-ANAL_MP_DE sy-vline 
WA_ROIU_PR_CHAH_STR-TYP_DE sy-vline 
WA_ROIU_PR_CHAH_STR-MEAS_GRP sy-vline 
WA_ROIU_PR_CHAH_STR-MEAS_GRP_DE sy-vline 
WA_ROIU_PR_CHAH_STR-XXDBACTION sy-vline 
WA_ROIU_PR_CHAH_STR-MJPDT_CD2 sy-vline 
WA_ROIU_PR_CHAH_STR-MJPDT_CD4 sy-vline 
WA_ROIU_PR_CHAH_STR-MEAS_GRP2 sy-vline 
WA_ROIU_PR_CHAH_STR-MEAS_GRP4 sy-vline 
WA_ROIU_PR_CHAH_STR-MEAS_GRP2_TX sy-vline 
WA_ROIU_PR_CHAH_STR-MEAS_GRP4_TX sy-vline 
WA_ROIU_PR_CHAH_STR-REF_MP_NO sy-vline 
WA_ROIU_PR_CHAH_STR-REF_MP_DE sy-vline 
WA_ROIU_PR_CHAH_STR-REF_EFF_FROM_DT sy-vline      INTO ld_text SEPARATED BY SPACE.

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