ABAP Select data from SAP table J_1GVL_RS1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_1GVL_RS1 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 J_1GVL_RS1. 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 J_1GVL_RS1 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_J_1GVL_RS1 TYPE STANDARD TABLE OF J_1GVL_RS1,
      WA_J_1GVL_RS1 TYPE J_1GVL_RS1,
      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: <J_1GVL_RS1> TYPE J_1GVL_RS1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_1GVL_RS1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_1GVL_RS1
  INTO TABLE IT_J_1GVL_RS1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_1GVL_RS1
*  INTO TABLE @DATA(IT_J_1GVL_RS12).
*--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_J_1GVL_RS1 INDEX 1 INTO DATA(WA_J_1GVL_RS12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_1GVL_RS1 ASSIGNING <J_1GVL_RS1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_1GVL_RS1>-MATNR = 1.
<J_1GVL_RS1>-WERKS = 1.
<J_1GVL_RS1>-BWTAR = 1.
<J_1GVL_RS1>-MAKTX = 1.
<J_1GVL_RS1>-MEINS = 1.

ENDLOOP.

LOOP AT IT_J_1GVL_RS1 INTO WA_J_1GVL_RS1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_1GVL_RS1-MTART, sy-vline,
  WA_J_1GVL_RS1-BKLAS, sy-vline,
  WA_J_1GVL_RS1-VLMETH, sy-vline,
  WA_J_1GVL_RS1-VALIND, sy-vline,
  WA_J_1GVL_RS1-PRODTYP, sy-vline,
  WA_J_1GVL_RS1-PACKM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_1GVL_RS1 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_J_1GVL_RS1 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_J_1GVL_RS1 INTO WA_J_1GVL_RS1.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field BS_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-BS_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-BS_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field GR_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-GR_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-GR_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field PU_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-PU_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-PU_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field DI_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-DI_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-DI_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field DO_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-DO_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-DO_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field PC_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-PC_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-PC_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field EX_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-EX_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-EX_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field PX_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-PX_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-PX_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field OI_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-OI_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-OI_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field OE_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-OE_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-OE_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field CP_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-CP_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-CP_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field CK_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-CK_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-CK_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field CO_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-CO_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-CO_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field AL_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-AL_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-AL_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SL_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-SL_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-SL_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SR_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-SR_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-SR_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field RM_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-RM_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-RM_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field TR_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-TR_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-TR_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field DF_VA
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-DF_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-DF_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field ER_VA
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-ER_VA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-ER_VA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field RMVAR
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_J_1GVL_RS1-RMVAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GVL_RS1-RMVAR.
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_J_1GVL_RS1_STR, 
MATNR TYPE STRING,
WERKS TYPE STRING,
BWTAR TYPE STRING,
MAKTX TYPE STRING,
MEINS TYPE STRING,
MTART TYPE STRING,
BKLAS TYPE STRING,
VLMETH TYPE STRING,
VALIND TYPE STRING,
PRODTYP TYPE STRING,
PACKM TYPE STRING,
REPOST TYPE STRING,
WITHIS TYPE STRING,
ACTIVE TYPE STRING,
VLLEVEL TYPE STRING,
VALCOUNT TYPE STRING,
VALUATED TYPE STRING,
PEINH TYPE STRING,
STPRS TYPE STRING,
VERPR TYPE STRING,
PR%DIFF TYPE STRING,
BI_QS TYPE STRING,
BS_VA TYPE STRING,
GR_QS TYPE STRING,
GR_VA TYPE STRING,
PU_VA TYPE STRING,
DI_QS TYPE STRING,
DI_VA TYPE STRING,
DO_QS TYPE STRING,
DO_VA TYPE STRING,
PD_QS TYPE STRING,
PC_VA TYPE STRING,
EX_VA TYPE STRING,
PX_VA TYPE STRING,
OI_QS TYPE STRING,
OI_VA TYPE STRING,
OE_QS TYPE STRING,
OE_VA TYPE STRING,
CP_QS TYPE STRING,
CP_VA TYPE STRING,
CK_QS TYPE STRING,
CK_VA TYPE STRING,
CO_QS TYPE STRING,
CO_VA TYPE STRING,
AL_QS TYPE STRING,
AL_VA TYPE STRING,
SL_QS TYPE STRING,
SL_VA TYPE STRING,
SR_VA TYPE STRING,
RS_QS TYPE STRING,
RM_VA TYPE STRING,
TR_QS TYPE STRING,
TR_VA TYPE STRING,
DF_QS TYPE STRING,
DF_VA TYPE STRING,
ER_VA TYPE STRING,
RMVAR TYPE STRING,
WAERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_1GVL_RS1_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_J_1GVL_RS1_STR-MATNR sy-vline 
WA_J_1GVL_RS1_STR-WERKS sy-vline 
WA_J_1GVL_RS1_STR-BWTAR sy-vline 
WA_J_1GVL_RS1_STR-MAKTX sy-vline 
WA_J_1GVL_RS1_STR-MEINS sy-vline 
WA_J_1GVL_RS1_STR-MTART sy-vline 
WA_J_1GVL_RS1_STR-BKLAS sy-vline 
WA_J_1GVL_RS1_STR-VLMETH sy-vline 
WA_J_1GVL_RS1_STR-VALIND sy-vline 
WA_J_1GVL_RS1_STR-PRODTYP sy-vline 
WA_J_1GVL_RS1_STR-PACKM sy-vline 
WA_J_1GVL_RS1_STR-REPOST sy-vline 
WA_J_1GVL_RS1_STR-WITHIS sy-vline 
WA_J_1GVL_RS1_STR-ACTIVE sy-vline 
WA_J_1GVL_RS1_STR-VLLEVEL sy-vline 
WA_J_1GVL_RS1_STR-VALCOUNT sy-vline 
WA_J_1GVL_RS1_STR-VALUATED sy-vline 
WA_J_1GVL_RS1_STR-PEINH sy-vline 
WA_J_1GVL_RS1_STR-STPRS sy-vline 
WA_J_1GVL_RS1_STR-VERPR sy-vline 
WA_J_1GVL_RS1_STR-PR%DIFF sy-vline 
WA_J_1GVL_RS1_STR-BI_QS sy-vline 
WA_J_1GVL_RS1_STR-BS_VA sy-vline 
WA_J_1GVL_RS1_STR-GR_QS sy-vline 
WA_J_1GVL_RS1_STR-GR_VA sy-vline 
WA_J_1GVL_RS1_STR-PU_VA sy-vline 
WA_J_1GVL_RS1_STR-DI_QS sy-vline 
WA_J_1GVL_RS1_STR-DI_VA sy-vline 
WA_J_1GVL_RS1_STR-DO_QS sy-vline 
WA_J_1GVL_RS1_STR-DO_VA sy-vline 
WA_J_1GVL_RS1_STR-PD_QS sy-vline 
WA_J_1GVL_RS1_STR-PC_VA sy-vline 
WA_J_1GVL_RS1_STR-EX_VA sy-vline 
WA_J_1GVL_RS1_STR-PX_VA sy-vline 
WA_J_1GVL_RS1_STR-OI_QS sy-vline 
WA_J_1GVL_RS1_STR-OI_VA sy-vline 
WA_J_1GVL_RS1_STR-OE_QS sy-vline 
WA_J_1GVL_RS1_STR-OE_VA sy-vline 
WA_J_1GVL_RS1_STR-CP_QS sy-vline 
WA_J_1GVL_RS1_STR-CP_VA sy-vline 
WA_J_1GVL_RS1_STR-CK_QS sy-vline 
WA_J_1GVL_RS1_STR-CK_VA sy-vline 
WA_J_1GVL_RS1_STR-CO_QS sy-vline 
WA_J_1GVL_RS1_STR-CO_VA sy-vline 
WA_J_1GVL_RS1_STR-AL_QS sy-vline 
WA_J_1GVL_RS1_STR-AL_VA sy-vline 
WA_J_1GVL_RS1_STR-SL_QS sy-vline 
WA_J_1GVL_RS1_STR-SL_VA sy-vline 
WA_J_1GVL_RS1_STR-SR_VA sy-vline 
WA_J_1GVL_RS1_STR-RS_QS sy-vline 
WA_J_1GVL_RS1_STR-RM_VA sy-vline 
WA_J_1GVL_RS1_STR-TR_QS sy-vline 
WA_J_1GVL_RS1_STR-TR_VA sy-vline 
WA_J_1GVL_RS1_STR-DF_QS sy-vline 
WA_J_1GVL_RS1_STR-DF_VA sy-vline 
WA_J_1GVL_RS1_STR-ER_VA sy-vline 
WA_J_1GVL_RS1_STR-RMVAR sy-vline 
WA_J_1GVL_RS1_STR-WAERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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