ABAP Select data from SAP table JVT1 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP JVT1 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 JVT1. 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 JVT1 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_JVT1 TYPE STANDARD TABLE OF JVT1,
      WA_JVT1 TYPE JVT1,
      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: <JVT1> TYPE JVT1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_JVT1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM JVT1
  INTO TABLE IT_JVT1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JVT1
*  INTO TABLE @DATA(IT_JVT12).
*--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_JVT1 INDEX 1 INTO DATA(WA_JVT12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_JVT1 ASSIGNING <JVT1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JVT1>-RCLNT = 1.
<JVT1>-RLDNR = 1.
<JVT1>-RRCTY = 1.
<JVT1>-RVERS = 1.
<JVT1>-BUKRS = 1.

ENDLOOP.

LOOP AT IT_JVT1 INTO WA_JVT1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JVT1-RYEAR, sy-vline,
  WA_JVT1-JVNAM, sy-vline,
  WA_JVT1-EGROU, sy-vline,
  WA_JVT1-RACCT, sy-vline,
  WA_JVT1-RCNTR, sy-vline,
  WA_JVT1-ORDNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JVT1 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_JVT1 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_JVT1 INTO WA_JVT1.


*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 RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVT1-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT1-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVT1-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT1-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_JVT1-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT1-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field JVNAM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVT1-JVNAM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT1-JVNAM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EGROU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVT1-EGROU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT1-EGROU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RACCT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVT1-RACCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT1-RACCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCNTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVT1-RCNTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT1-RCNTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVT1-ORDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT1-ORDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECIN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVT1-RECIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT1-RECIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVT1-PARTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT1-PARTN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_JVT1-RUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVT1-RUNIT.
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_JVT1_STR, 
RCLNT TYPE STRING,
RLDNR TYPE STRING,
RRCTY TYPE STRING,
RVERS TYPE STRING,
BUKRS TYPE STRING,
RYEAR TYPE STRING,
JVNAM TYPE STRING,
EGROU TYPE STRING,
RACCT TYPE STRING,
RCNTR TYPE STRING,
ORDNR TYPE STRING,
RECIN TYPE STRING,
PARTN TYPE STRING,
RTCUR TYPE STRING,
RUNIT TYPE STRING,
RPMAX TYPE STRING,
TSLVT TYPE STRING,
TSL01 TYPE STRING,
TSL02 TYPE STRING,
TSL03 TYPE STRING,
TSL04 TYPE STRING,
TSL05 TYPE STRING,
TSL06 TYPE STRING,
TSL07 TYPE STRING,
TSL08 TYPE STRING,
TSL09 TYPE STRING,
TSL10 TYPE STRING,
TSL11 TYPE STRING,
TSL12 TYPE STRING,
TSL13 TYPE STRING,
TSL14 TYPE STRING,
TSL15 TYPE STRING,
TSL16 TYPE STRING,
HSLVT TYPE STRING,
HSL01 TYPE STRING,
HSL02 TYPE STRING,
HSL03 TYPE STRING,
HSL04 TYPE STRING,
HSL05 TYPE STRING,
HSL06 TYPE STRING,
HSL07 TYPE STRING,
HSL08 TYPE STRING,
HSL09 TYPE STRING,
HSL10 TYPE STRING,
HSL11 TYPE STRING,
HSL12 TYPE STRING,
HSL13 TYPE STRING,
HSL14 TYPE STRING,
HSL15 TYPE STRING,
HSL16 TYPE STRING,
KSLVT TYPE STRING,
KSL01 TYPE STRING,
KSL02 TYPE STRING,
KSL03 TYPE STRING,
KSL04 TYPE STRING,
KSL05 TYPE STRING,
KSL06 TYPE STRING,
KSL07 TYPE STRING,
KSL08 TYPE STRING,
KSL09 TYPE STRING,
KSL10 TYPE STRING,
KSL11 TYPE STRING,
KSL12 TYPE STRING,
KSL13 TYPE STRING,
KSL14 TYPE STRING,
KSL15 TYPE STRING,
KSL16 TYPE STRING,
MSLVT TYPE STRING,
MSL01 TYPE STRING,
MSL02 TYPE STRING,
MSL03 TYPE STRING,
MSL04 TYPE STRING,
MSL05 TYPE STRING,
MSL06 TYPE STRING,
MSL07 TYPE STRING,
MSL08 TYPE STRING,
MSL09 TYPE STRING,
MSL10 TYPE STRING,
MSL11 TYPE STRING,
MSL12 TYPE STRING,
MSL13 TYPE STRING,
MSL14 TYPE STRING,
MSL15 TYPE STRING,
MSL16 TYPE STRING,
CSPRED TYPE STRING,
QSPRED TYPE STRING,
KOKRS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JVT1_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_JVT1_STR-RCLNT sy-vline 
WA_JVT1_STR-RLDNR sy-vline 
WA_JVT1_STR-RRCTY sy-vline 
WA_JVT1_STR-RVERS sy-vline 
WA_JVT1_STR-BUKRS sy-vline 
WA_JVT1_STR-RYEAR sy-vline 
WA_JVT1_STR-JVNAM sy-vline 
WA_JVT1_STR-EGROU sy-vline 
WA_JVT1_STR-RACCT sy-vline 
WA_JVT1_STR-RCNTR sy-vline 
WA_JVT1_STR-ORDNR sy-vline 
WA_JVT1_STR-RECIN sy-vline 
WA_JVT1_STR-PARTN sy-vline 
WA_JVT1_STR-RTCUR sy-vline 
WA_JVT1_STR-RUNIT sy-vline 
WA_JVT1_STR-RPMAX sy-vline 
WA_JVT1_STR-TSLVT sy-vline 
WA_JVT1_STR-TSL01 sy-vline 
WA_JVT1_STR-TSL02 sy-vline 
WA_JVT1_STR-TSL03 sy-vline 
WA_JVT1_STR-TSL04 sy-vline 
WA_JVT1_STR-TSL05 sy-vline 
WA_JVT1_STR-TSL06 sy-vline 
WA_JVT1_STR-TSL07 sy-vline 
WA_JVT1_STR-TSL08 sy-vline 
WA_JVT1_STR-TSL09 sy-vline 
WA_JVT1_STR-TSL10 sy-vline 
WA_JVT1_STR-TSL11 sy-vline 
WA_JVT1_STR-TSL12 sy-vline 
WA_JVT1_STR-TSL13 sy-vline 
WA_JVT1_STR-TSL14 sy-vline 
WA_JVT1_STR-TSL15 sy-vline 
WA_JVT1_STR-TSL16 sy-vline 
WA_JVT1_STR-HSLVT sy-vline 
WA_JVT1_STR-HSL01 sy-vline 
WA_JVT1_STR-HSL02 sy-vline 
WA_JVT1_STR-HSL03 sy-vline 
WA_JVT1_STR-HSL04 sy-vline 
WA_JVT1_STR-HSL05 sy-vline 
WA_JVT1_STR-HSL06 sy-vline 
WA_JVT1_STR-HSL07 sy-vline 
WA_JVT1_STR-HSL08 sy-vline 
WA_JVT1_STR-HSL09 sy-vline 
WA_JVT1_STR-HSL10 sy-vline 
WA_JVT1_STR-HSL11 sy-vline 
WA_JVT1_STR-HSL12 sy-vline 
WA_JVT1_STR-HSL13 sy-vline 
WA_JVT1_STR-HSL14 sy-vline 
WA_JVT1_STR-HSL15 sy-vline 
WA_JVT1_STR-HSL16 sy-vline 
WA_JVT1_STR-KSLVT sy-vline 
WA_JVT1_STR-KSL01 sy-vline 
WA_JVT1_STR-KSL02 sy-vline 
WA_JVT1_STR-KSL03 sy-vline 
WA_JVT1_STR-KSL04 sy-vline 
WA_JVT1_STR-KSL05 sy-vline 
WA_JVT1_STR-KSL06 sy-vline 
WA_JVT1_STR-KSL07 sy-vline 
WA_JVT1_STR-KSL08 sy-vline 
WA_JVT1_STR-KSL09 sy-vline 
WA_JVT1_STR-KSL10 sy-vline 
WA_JVT1_STR-KSL11 sy-vline 
WA_JVT1_STR-KSL12 sy-vline 
WA_JVT1_STR-KSL13 sy-vline 
WA_JVT1_STR-KSL14 sy-vline 
WA_JVT1_STR-KSL15 sy-vline 
WA_JVT1_STR-KSL16 sy-vline 
WA_JVT1_STR-MSLVT sy-vline 
WA_JVT1_STR-MSL01 sy-vline 
WA_JVT1_STR-MSL02 sy-vline 
WA_JVT1_STR-MSL03 sy-vline 
WA_JVT1_STR-MSL04 sy-vline 
WA_JVT1_STR-MSL05 sy-vline 
WA_JVT1_STR-MSL06 sy-vline 
WA_JVT1_STR-MSL07 sy-vline 
WA_JVT1_STR-MSL08 sy-vline 
WA_JVT1_STR-MSL09 sy-vline 
WA_JVT1_STR-MSL10 sy-vline 
WA_JVT1_STR-MSL11 sy-vline 
WA_JVT1_STR-MSL12 sy-vline 
WA_JVT1_STR-MSL13 sy-vline 
WA_JVT1_STR-MSL14 sy-vline 
WA_JVT1_STR-MSL15 sy-vline 
WA_JVT1_STR-MSL16 sy-vline 
WA_JVT1_STR-CSPRED sy-vline 
WA_JVT1_STR-QSPRED sy-vline 
WA_JVT1_STR-KOKRS sy-vline      INTO ld_text SEPARATED BY SPACE.

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