ABAP Select data from SAP table /SCWM/S_RF_HU_MAINT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_RF_HU_MAINT
*  INTO TABLE @DATA(IT_/SCWM/S_RF_HU_MAINT2).
*--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_/SCWM/S_RF_HU_MAINT INDEX 1 INTO DATA(WA_/SCWM/S_RF_HU_MAINT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_RF_HU_MAINT>-HUIDENT = 1.
</SCWM/S_RF_HU_MAINT>-MATID = 1.
</SCWM/S_RF_HU_MAINT>-MATNR = 1.
</SCWM/S_RF_HU_MAINT>-PMATID = 1.
</SCWM/S_RF_HU_MAINT>-NLPLA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_RF_HU_MAINT-DSTGRP, sy-vline,
  WA_/SCWM/S_RF_HU_MAINT-WORKSTATION, sy-vline,
  WA_/SCWM/S_RF_HU_MAINT-LGNUM, sy-vline,
  WA_/SCWM/S_RF_HU_MAINT-SPRDHU, sy-vline,
  WA_/SCWM/S_RF_HU_MAINT-VSOLA, sy-vline,
  WA_/SCWM/S_RF_HU_MAINT-NSOLA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_RF_HU_MAINT 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_/SCWM/S_RF_HU_MAINT 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_/SCWM/S_RF_HU_MAINT INTO WA_/SCWM/S_RF_HU_MAINT.


*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 HUID, internal->external for field HUIDENT
CALL FUNCTION 'CONVERSION_EXIT_HUID_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-HUIDENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-HUIDENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MDLPD, internal->external for field MATID
CALL FUNCTION 'CONVERSION_EXIT_MDLPD_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-MATID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-MATID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MDLP1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MDLP1_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MDLPD, internal->external for field PMATID
CALL FUNCTION 'CONVERSION_EXIT_MDLPD_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-PMATID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-PMATID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit HUID, internal->external for field SPRDHU
CALL FUNCTION 'CONVERSION_EXIT_HUID_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-SPRDHU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-SPRDHU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit QNTY1, internal->external for field VSOLA
CALL FUNCTION 'CONVERSION_EXIT_QNTY1_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-VSOLA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-VSOLA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit QNTY1, internal->external for field NSOLA
CALL FUNCTION 'CONVERSION_EXIT_QNTY1_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-NSOLA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-NSOLA.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit HUID, internal->external for field VLENR
CALL FUNCTION 'CONVERSION_EXIT_HUID_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-VLENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-VLENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit HUID, internal->external for field NLENR
CALL FUNCTION 'CONVERSION_EXIT_HUID_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-NLENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-NLENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit QNTY1, internal->external for field NISTA
CALL FUNCTION 'CONVERSION_EXIT_QNTY1_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-NISTA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-NISTA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit QNTY1, internal->external for field NDIFA
CALL FUNCTION 'CONVERSION_EXIT_QNTY1_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-NDIFA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-NDIFA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit QNTY1, internal->external for field G_WEIGHT
CALL FUNCTION 'CONVERSION_EXIT_QNTY1_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-G_WEIGHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-G_WEIGHT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit QNTY1, internal->external for field M_WEIGHT
CALL FUNCTION 'CONVERSION_EXIT_QNTY1_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-M_WEIGHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-M_WEIGHT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit QNTY1, internal->external for field G_VOLUME
CALL FUNCTION 'CONVERSION_EXIT_QNTY1_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-G_VOLUME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-G_VOLUME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit QNTY1, internal->external for field M_VOLUME
CALL FUNCTION 'CONVERSION_EXIT_QNTY1_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-M_VOLUME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-M_VOLUME.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit BPMAP, internal->external for field OWNER
CALL FUNCTION 'CONVERSION_EXIT_BPMAP_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-OWNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-OWNER.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit QNTY1, internal->external for field LENGTH
CALL FUNCTION 'CONVERSION_EXIT_QNTY1_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-LENGTH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-LENGTH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit QNTY1, internal->external for field WIDTH
CALL FUNCTION 'CONVERSION_EXIT_QNTY1_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-WIDTH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-WIDTH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit QNTY1, internal->external for field HEIGHT
CALL FUNCTION 'CONVERSION_EXIT_QNTY1_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-HEIGHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-HEIGHT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit RFHUL, internal->external for field RFHU
CALL FUNCTION 'CONVERSION_EXIT_RFHUL_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-RFHU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-RFHU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QDOCNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_HU_MAINT-QDOCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_HU_MAINT-QDOCNO.
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_/SCWM/S_RF_HU_MAINT_STR, 
HUIDENT TYPE STRING,
MATID TYPE STRING,
MATNR TYPE STRING,
PMATID TYPE STRING,
NLPLA TYPE STRING,
DSTGRP TYPE STRING,
WORKSTATION TYPE STRING,
LGNUM TYPE STRING,
SPRDHU TYPE STRING,
VSOLA TYPE STRING,
NSOLA TYPE STRING,
ALTME TYPE STRING,
VLPLA TYPE STRING,
VLENR TYPE STRING,
NLENR TYPE STRING,
NISTA TYPE STRING,
NDIFA TYPE STRING,
AAREA TYPE STRING,
ACT_TYPE TYPE STRING,
G_WEIGHT TYPE STRING,
M_WEIGHT TYPE STRING,
UNIT_GW TYPE STRING,
G_VOLUME TYPE STRING,
M_VOLUME TYPE STRING,
UNIT_GV TYPE STRING,
LOGPOS TYPE STRING,
OWNER TYPE STRING,
ENTITLED TYPE STRING,
RDOCCAT TYPE STRING,
RDOCID TYPE STRING,
RDOCNO TYPE STRING,
RITMNO TYPE STRING,
RITMID TYPE STRING,
LENGTH TYPE STRING,
WIDTH TYPE STRING,
HEIGHT TYPE STRING,
UNIT_LWH TYPE STRING,
TOLV TYPE STRING,
TOLW TYPE STRING,
RFHU TYPE STRING,
QDOCCAT TYPE STRING,
QDOCID TYPE STRING,
QDOCNO TYPE STRING,
QITMID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_RF_HU_MAINT_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_/SCWM/S_RF_HU_MAINT_STR-HUIDENT sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-MATID sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-MATNR sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-PMATID sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-NLPLA sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-DSTGRP sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-WORKSTATION sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-LGNUM sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-SPRDHU sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-VSOLA sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-NSOLA sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-ALTME sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-VLPLA sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-VLENR sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-NLENR sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-NISTA sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-NDIFA sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-AAREA sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-ACT_TYPE sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-G_WEIGHT sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-M_WEIGHT sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-UNIT_GW sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-G_VOLUME sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-M_VOLUME sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-UNIT_GV sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-LOGPOS sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-OWNER sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-ENTITLED sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-RDOCCAT sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-RDOCID sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-RDOCNO sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-RITMNO sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-RITMID sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-LENGTH sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-WIDTH sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-HEIGHT sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-UNIT_LWH sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-TOLV sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-TOLW sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-RFHU sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-QDOCCAT sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-QDOCID sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-QDOCNO sy-vline 
WA_/SCWM/S_RF_HU_MAINT_STR-QITMID sy-vline      INTO ld_text SEPARATED BY SPACE.

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