ABAP Select data from SAP table /MDG/_SF_IS_PP_GLJOURLIN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /MDG/_SF_IS_PP_GLJOURLIN 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 /MDG/_SF_IS_PP_GLJOURLIN. 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 /MDG/_SF_IS_PP_GLJOURLIN 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_/MDG/_SF_IS_PP_GLJOURLIN TYPE STANDARD TABLE OF /MDG/_SF_IS_PP_GLJOURLIN,
      WA_/MDG/_SF_IS_PP_GLJOURLIN TYPE /MDG/_SF_IS_PP_GLJOURLIN,
      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: </MDG/_SF_IS_PP_GLJOURLIN> TYPE /MDG/_SF_IS_PP_GLJOURLIN.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /MDG/_SF_IS_PP_GLJOURLIN
  INTO TABLE IT_/MDG/_SF_IS_PP_GLJOURLIN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MDG/_SF_IS_PP_GLJOURLIN
*  INTO TABLE @DATA(IT_/MDG/_SF_IS_PP_GLJOURLIN2).
*--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_/MDG/_SF_IS_PP_GLJOURLIN INDEX 1 INTO DATA(WA_/MDG/_SF_IS_PP_GLJOURLIN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/MDG/_SF_IS_PP_GLJOURLIN ASSIGNING </MDG/_SF_IS_PP_GLJOURLIN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MDG/_SF_IS_PP_GLJOURLIN>-COMPCODE = 1.
</MDG/_SF_IS_PP_GLJOURLIN>-SYSTEM = 1.
</MDG/_SF_IS_PP_GLJOURLIN>-GLJOURDOC = 1.
</MDG/_SF_IS_PP_GLJOURLIN>-LINE_NR = 1.
</MDG/_SF_IS_PP_GLJOURLIN>-ACCLINE = 1.

ENDLOOP.

LOOP AT IT_/MDG/_SF_IS_PP_GLJOURLIN INTO WA_/MDG/_SF_IS_PP_GLJOURLIN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MDG/_SF_IS_PP_GLJOURLIN-AMT_DOCCU, sy-vline,
  WA_/MDG/_SF_IS_PP_GLJOURLIN-AMT_LOCCU, sy-vline,
  WA_/MDG/_SF_IS_PP_GLJOURLIN-ASSET_DAT, sy-vline,
  WA_/MDG/_SF_IS_PP_GLJOURLIN-ASSET_NUM, sy-vline,
  WA_/MDG/_SF_IS_PP_GLJOURLIN-ASSET_SUB, sy-vline,
  WA_/MDG/_SF_IS_PP_GLJOURLIN-BUS_AREA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MDG/_SF_IS_PP_GLJOURLIN 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_/MDG/_SF_IS_PP_GLJOURLIN 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_/MDG/_SF_IS_PP_GLJOURLIN INTO WA_/MDG/_SF_IS_PP_GLJOURLIN.


*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_/MDG/_SF_IS_PP_GLJOURLIN_STR, 
COMPCODE TYPE STRING,
SYSTEM TYPE STRING,
GLJOURDOC TYPE STRING,
LINE_NR TYPE STRING,
ACCLINE TYPE STRING,
AMT_DOCCU TYPE STRING,
AMT_LOCCU TYPE STRING,
ASSET_DAT TYPE STRING,
ASSET_NUM TYPE STRING,
ASSET_SUB TYPE STRING,
BUS_AREA TYPE STRING,
CCTRLIN TYPE STRING,
COADOC TYPE STRING,
COAREADOC TYPE STRING,
CO_OBJECT TYPE STRING,
DB_CR_IND TYPE STRING,
D_CURR_GL TYPE STRING,
FDATEGLLI TYPE STRING,
FUNC_AREA TYPE STRING,
ITEM_TEXT TYPE STRING,
LOC_CURR TYPE STRING,
MEAS_UNIT TYPE STRING,
MTR_NUM TYPE STRING,
NETWK_NUM TYPE STRING,
ORDERID TYPE STRING,
PCTRLINE TYPE STRING,
PLANT_GL TYPE STRING,
PTN_BUARA TYPE STRING,
PTN_PCTR TYPE STRING,
QUANTITY TYPE STRING,
ROUTE_NUM TYPE STRING,
SALES_ORD TYPE STRING,
S_ORD_ITM TYPE STRING,
TAX_CODE TYPE STRING,
TDATEGLLI TYPE STRING,
VAL_DATE TYPE STRING,
WBS_ELEMN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MDG/_SF_IS_PP_GLJOURLIN_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_/MDG/_SF_IS_PP_GLJOURLIN_STR-COMPCODE sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-SYSTEM sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-GLJOURDOC sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-LINE_NR sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-ACCLINE sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-AMT_DOCCU sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-AMT_LOCCU sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-ASSET_DAT sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-ASSET_NUM sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-ASSET_SUB sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-BUS_AREA sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-CCTRLIN sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-COADOC sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-COAREADOC sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-CO_OBJECT sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-DB_CR_IND sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-D_CURR_GL sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-FDATEGLLI sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-FUNC_AREA sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-ITEM_TEXT sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-LOC_CURR sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-MEAS_UNIT sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-MTR_NUM sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-NETWK_NUM sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-ORDERID sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-PCTRLINE sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-PLANT_GL sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-PTN_BUARA sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-PTN_PCTR sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-QUANTITY sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-ROUTE_NUM sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-SALES_ORD sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-S_ORD_ITM sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-TAX_CODE sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-TDATEGLLI sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-VAL_DATE sy-vline 
WA_/MDG/_SF_IS_PP_GLJOURLIN_STR-WBS_ELEMN sy-vline      INTO ld_text SEPARATED BY SPACE.

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