ABAP Select data from SAP table OIHSLA 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 OIHSLA 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 OIHSLA. 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 OIHSLA 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_OIHSLA TYPE STANDARD TABLE OF OIHSLA,
      WA_OIHSLA TYPE OIHSLA,
      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: <OIHSLA> TYPE OIHSLA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIHSLA
*  INTO TABLE @DATA(IT_OIHSLA2).
*--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_OIHSLA INDEX 1 INTO DATA(WA_OIHSLA2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIHSLA-RYEAR, sy-vline,
  WA_OIHSLA-RTCUR, sy-vline,
  WA_OIHSLA-RUNIT, sy-vline,
  WA_OIHSLA-DRCRK, sy-vline,
  WA_OIHSLA-POPER, sy-vline,
  WA_OIHSLA-DOCCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIHSLA 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_OIHSLA 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_OIHSLA INTO WA_OIHSLA.


*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_OIHSLA-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIHSLA-RLDNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIHSLA-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIHSLA-LOGSYS.
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_OIHSLA_STR, 
RCLNT TYPE STRING,
GL_SIRID TYPE STRING,
RLDNR TYPE STRING,
RRCTY TYPE STRING,
RVERS TYPE STRING,
RYEAR TYPE STRING,
RTCUR TYPE STRING,
RUNIT TYPE STRING,
DRCRK TYPE STRING,
POPER TYPE STRING,
DOCCT TYPE STRING,
DOCNR TYPE STRING,
DOCLN TYPE STRING,
RBUKRS TYPE STRING,
RACCT TYPE STRING,
RBWTAR TYPE STRING,
RWERKS TYPE STRING,
ROITAXGRP TYPE STRING,
ROIHANTYP TYPE STRING,
ROITAXFRO TYPE STRING,
ROITAXTO TYPE STRING,
RBUSA TYPE STRING,
ROIPRICIE TYPE STRING,
ROITXVAL0 TYPE STRING,
ROITXVAL1 TYPE STRING,
ROITXVAL2 TYPE STRING,
ROITXVAL3 TYPE STRING,
ROITXVAL4 TYPE STRING,
ROITXVAL5 TYPE STRING,
ROITXVAL6 TYPE STRING,
ROIOILCON TYPE STRING,
ROITAXCON TYPE STRING,
ROITAXVAL TYPE STRING,
ROIOILCON2 TYPE STRING,
ROIUOMQT TYPE STRING,
ROITAXQT TYPE STRING,
ROIFUTQT TYPE STRING,
ROIFUTTX TYPE STRING,
ROIFUTDT TYPE STRING,
ROIFUTQT2 TYPE STRING,
ROIFUTTX2 TYPE STRING,
ROIFUTDT2 TYPE STRING,
RCNTR TYPE STRING,
TSL TYPE STRING,
HSL TYPE STRING,
KSL TYPE STRING,
MSL TYPE STRING,
AUNIT TYPE STRING,
SGTXT TYPE STRING,
AUTOM TYPE STRING,
DOCTY TYPE STRING,
ACTIV TYPE STRING,
BUDAT TYPE STRING,
WSDAT TYPE STRING,
REFDOCNR TYPE STRING,
REFRYEAR TYPE STRING,
REFDOCLN TYPE STRING,
REFDOCCT TYPE STRING,
REFACTIV TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
USNAM TYPE STRING,
AWTYP TYPE STRING,
AWORG TYPE STRING,
LOGSYS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIHSLA_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_OIHSLA_STR-RCLNT sy-vline 
WA_OIHSLA_STR-GL_SIRID sy-vline 
WA_OIHSLA_STR-RLDNR sy-vline 
WA_OIHSLA_STR-RRCTY sy-vline 
WA_OIHSLA_STR-RVERS sy-vline 
WA_OIHSLA_STR-RYEAR sy-vline 
WA_OIHSLA_STR-RTCUR sy-vline 
WA_OIHSLA_STR-RUNIT sy-vline 
WA_OIHSLA_STR-DRCRK sy-vline 
WA_OIHSLA_STR-POPER sy-vline 
WA_OIHSLA_STR-DOCCT sy-vline 
WA_OIHSLA_STR-DOCNR sy-vline 
WA_OIHSLA_STR-DOCLN sy-vline 
WA_OIHSLA_STR-RBUKRS sy-vline 
WA_OIHSLA_STR-RACCT sy-vline 
WA_OIHSLA_STR-RBWTAR sy-vline 
WA_OIHSLA_STR-RWERKS sy-vline 
WA_OIHSLA_STR-ROITAXGRP sy-vline 
WA_OIHSLA_STR-ROIHANTYP sy-vline 
WA_OIHSLA_STR-ROITAXFRO sy-vline 
WA_OIHSLA_STR-ROITAXTO sy-vline 
WA_OIHSLA_STR-RBUSA sy-vline 
WA_OIHSLA_STR-ROIPRICIE sy-vline 
WA_OIHSLA_STR-ROITXVAL0 sy-vline 
WA_OIHSLA_STR-ROITXVAL1 sy-vline 
WA_OIHSLA_STR-ROITXVAL2 sy-vline 
WA_OIHSLA_STR-ROITXVAL3 sy-vline 
WA_OIHSLA_STR-ROITXVAL4 sy-vline 
WA_OIHSLA_STR-ROITXVAL5 sy-vline 
WA_OIHSLA_STR-ROITXVAL6 sy-vline 
WA_OIHSLA_STR-ROIOILCON sy-vline 
WA_OIHSLA_STR-ROITAXCON sy-vline 
WA_OIHSLA_STR-ROITAXVAL sy-vline 
WA_OIHSLA_STR-ROIOILCON2 sy-vline 
WA_OIHSLA_STR-ROIUOMQT sy-vline 
WA_OIHSLA_STR-ROITAXQT sy-vline 
WA_OIHSLA_STR-ROIFUTQT sy-vline 
WA_OIHSLA_STR-ROIFUTTX sy-vline 
WA_OIHSLA_STR-ROIFUTDT sy-vline 
WA_OIHSLA_STR-ROIFUTQT2 sy-vline 
WA_OIHSLA_STR-ROIFUTTX2 sy-vline 
WA_OIHSLA_STR-ROIFUTDT2 sy-vline 
WA_OIHSLA_STR-RCNTR sy-vline 
WA_OIHSLA_STR-TSL sy-vline 
WA_OIHSLA_STR-HSL sy-vline 
WA_OIHSLA_STR-KSL sy-vline 
WA_OIHSLA_STR-MSL sy-vline 
WA_OIHSLA_STR-AUNIT sy-vline 
WA_OIHSLA_STR-SGTXT sy-vline 
WA_OIHSLA_STR-AUTOM sy-vline 
WA_OIHSLA_STR-DOCTY sy-vline 
WA_OIHSLA_STR-ACTIV sy-vline 
WA_OIHSLA_STR-BUDAT sy-vline 
WA_OIHSLA_STR-WSDAT sy-vline 
WA_OIHSLA_STR-REFDOCNR sy-vline 
WA_OIHSLA_STR-REFRYEAR sy-vline 
WA_OIHSLA_STR-REFDOCLN sy-vline 
WA_OIHSLA_STR-REFDOCCT sy-vline 
WA_OIHSLA_STR-REFACTIV sy-vline 
WA_OIHSLA_STR-CPUDT sy-vline 
WA_OIHSLA_STR-CPUTM sy-vline 
WA_OIHSLA_STR-USNAM sy-vline 
WA_OIHSLA_STR-AWTYP sy-vline 
WA_OIHSLA_STR-AWORG sy-vline 
WA_OIHSLA_STR-LOGSYS sy-vline      INTO ld_text SEPARATED BY SPACE.

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