ABAP Select data from SAP table CJOAOBJPG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CJOAOBJPG
*  INTO TABLE @DATA(IT_CJOAOBJPG2).
*--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_CJOAOBJPG INDEX 1 INTO DATA(WA_CJOAOBJPG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CJOAOBJPG>-MANDT = 1.
<CJOAOBJPG>-COMPANYCODE = 1.
<CJOAOBJPG>-JNTOPGAGRMT = 1.
<CJOAOBJPG>-JNTOPGAGRMTTEXT = 1.
<CJOAOBJPG>-JNTOPGAGRMTCLASS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CJOAOBJPG-JNTVNTRCONTRACTNMBR, sy-vline,
  WA_CJOAOBJPG-JVAOVHDPERCENTPRODG, sy-vline,
  WA_CJOAOBJPG-JVAEXCLSNACCTSETPERCENTPRODG, sy-vline,
  WA_CJOAOBJPG-JVAOVHDPERCENTDEV, sy-vline,
  WA_CJOAOBJPG-JVAEXCLSNACCTSETPERCENTDEV, sy-vline,
  WA_CJOAOBJPG-JNTVNTREXPNISESCALATED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CJOAOBJPG 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_CJOAOBJPG 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_CJOAOBJPG INTO WA_CJOAOBJPG.


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

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

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

*Conversion exit ALPHA, internal->external for field JNTVNTROVHDRECURRINGDOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CJOAOBJPG-JNTVNTROVHDRECURRINGDOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CJOAOBJPG-JNTVNTROVHDRECURRINGDOC.
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_CJOAOBJPG_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
JNTOPGAGRMT TYPE STRING,
JNTOPGAGRMTTEXT TYPE STRING,
JNTOPGAGRMTCLASS TYPE STRING,
JNTVNTRCONTRACTNMBR TYPE STRING,
JVAOVHDPERCENTPRODG TYPE STRING,
JVAEXCLSNACCTSETPERCENTPRODG TYPE STRING,
JVAOVHDPERCENTDEV TYPE STRING,
JVAEXCLSNACCTSETPERCENTDEV TYPE STRING,
JNTVNTREXPNISESCALATED TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
JNTVNTROVHDFLATRATEAMT TYPE STRING,
JNTVNTROVHDOFFSETCOSTCTR TYPE STRING,
JNTVNTROVHDRECURRINGDOC TYPE STRING,
JNTOPGAGRMTCREATEDBYUSER TYPE STRING,
JNTOPGAGRMTCREATIONDATETIME TYPE STRING,
JNTOPGAGRMTLASTCHANGEDBYUSER TYPE STRING,
JNTOPGAGRMTLASTCHANGEDDATETIME TYPE STRING,
JNTVNTRCONSTRUCTIONOVHDRULE TYPE STRING,
JNTVNTRCONSTRUCTIONEXCLSNSET TYPE STRING,
JNTVNTRCATASTROPHEEXCLSNSET TYPE STRING,
JNTVNTRCATASTROPHEOVHDRULE TYPE STRING,
JVAPARCOOVHDSECTIONISVISIBLE TYPE STRING,
JVASTEPPEDRATESECTIONISVISIBLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CJOAOBJPG_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_CJOAOBJPG_STR-MANDT sy-vline 
WA_CJOAOBJPG_STR-COMPANYCODE sy-vline 
WA_CJOAOBJPG_STR-JNTOPGAGRMT sy-vline 
WA_CJOAOBJPG_STR-JNTOPGAGRMTTEXT sy-vline 
WA_CJOAOBJPG_STR-JNTOPGAGRMTCLASS sy-vline 
WA_CJOAOBJPG_STR-JNTVNTRCONTRACTNMBR sy-vline 
WA_CJOAOBJPG_STR-JVAOVHDPERCENTPRODG sy-vline 
WA_CJOAOBJPG_STR-JVAEXCLSNACCTSETPERCENTPRODG sy-vline 
WA_CJOAOBJPG_STR-JVAOVHDPERCENTDEV sy-vline 
WA_CJOAOBJPG_STR-JVAEXCLSNACCTSETPERCENTDEV sy-vline 
WA_CJOAOBJPG_STR-JNTVNTREXPNISESCALATED sy-vline 
WA_CJOAOBJPG_STR-COMPANYCODECURRENCY sy-vline 
WA_CJOAOBJPG_STR-JNTVNTROVHDFLATRATEAMT sy-vline 
WA_CJOAOBJPG_STR-JNTVNTROVHDOFFSETCOSTCTR sy-vline 
WA_CJOAOBJPG_STR-JNTVNTROVHDRECURRINGDOC sy-vline 
WA_CJOAOBJPG_STR-JNTOPGAGRMTCREATEDBYUSER sy-vline 
WA_CJOAOBJPG_STR-JNTOPGAGRMTCREATIONDATETIME sy-vline 
WA_CJOAOBJPG_STR-JNTOPGAGRMTLASTCHANGEDBYUSER sy-vline 
WA_CJOAOBJPG_STR-JNTOPGAGRMTLASTCHANGEDDATETIME sy-vline 
WA_CJOAOBJPG_STR-JNTVNTRCONSTRUCTIONOVHDRULE sy-vline 
WA_CJOAOBJPG_STR-JNTVNTRCONSTRUCTIONEXCLSNSET sy-vline 
WA_CJOAOBJPG_STR-JNTVNTRCATASTROPHEEXCLSNSET sy-vline 
WA_CJOAOBJPG_STR-JNTVNTRCATASTROPHEOVHDRULE sy-vline 
WA_CJOAOBJPG_STR-JVAPARCOOVHDSECTIONISVISIBLE sy-vline 
WA_CJOAOBJPG_STR-JVASTEPPEDRATESECTIONISVISIBLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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