ABAP Select data from SAP table /SAPAPO/VRES_TXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/VRES_TXT
*  INTO TABLE @DATA(IT_/SAPAPO/VRES_TXT2).
*--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_/SAPAPO/VRES_TXT INDEX 1 INTO DATA(WA_/SAPAPO/VRES_TXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/VRES_TXT>-MANDT = 1.
</SAPAPO/VRES_TXT>-RESUID = 1.
</SAPAPO/VRES_TXT>-SIMVERSID = 1.
</SAPAPO/VRES_TXT>-SIMSESSID = 1.
</SAPAPO/VRES_TXT>-RESUID_TXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/VRES_TXT-SIMVERSID_TXT, sy-vline,
  WA_/SAPAPO/VRES_TXT-SIMSESSID_TXT, sy-vline,
  WA_/SAPAPO/VRES_TXT-LANGU, sy-vline,
  WA_/SAPAPO/VRES_TXT-LCRESID, sy-vline,
  WA_/SAPAPO/VRES_TXT-TSTREAMID, sy-vline,
  WA_/SAPAPO/VRES_TXT-UNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/VRES_TXT 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_/SAPAPO/VRES_TXT 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_/SAPAPO/VRES_TXT INTO WA_/SAPAPO/VRES_TXT.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/VRES_TXT-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/VRES_TXT-LANGU.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field BR_TUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/VRES_TXT-BR_TUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/VRES_TXT-BR_TUNIT.
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_/SAPAPO/VRES_TXT_STR, 
MANDT TYPE STRING,
RESUID TYPE STRING,
SIMVERSID TYPE STRING,
SIMSESSID TYPE STRING,
RESUID_TXT TYPE STRING,
SIMVERSID_TXT TYPE STRING,
SIMSESSID_TXT TYPE STRING,
LANGU TYPE STRING,
LCRESID TYPE STRING,
TSTREAMID TYPE STRING,
UNIT TYPE STRING,
NAME TYPE STRING,
RESTYPE TYPE STRING,
LOCID TYPE STRING,
CALENDAR TYPE STRING,
TYPE TYPE STRING,
DIMENSION TYPE STRING,
BEGTI TYPE STRING,
ENDTI TYPE STRING,
BREAKTIME TYPE STRING,
BUFFERTIME TYPE STRING,
BUFFERTIME_UNIT TYPE STRING,
NOINDIVRES TYPE STRING,
NOINDIVRES_UNIT TYPE STRING,
INDIVRES_CAP TYPE STRING,
UTILIZATION TYPE STRING,
CAPACITY_A TYPE STRING,
CAPACITY_A_UNIT TYPE STRING,
NUM_OF_PERIODS TYPE STRING,
PERIOD TYPE STRING,
PLANNER TYPE STRING,
VERSION_ACTIVE TYPE STRING,
FINITE_PLANNING TYPE STRING,
IS_BOTTLENECK TYPE STRING,
MIN_GAPS TYPE STRING,
OVERLOAD TYPE STRING,
UNDERLOAD TYPE STRING,
OVERLAP_BUCKETS TYPE STRING,
START_ON_GRID TYPE STRING,
MIN_OVERLAP TYPE STRING,
MIN_OVERLAP_UNIT TYPE STRING,
MATRIX_ID TYPE STRING,
REFUID TYPE STRING,
CHANGEUSER TYPE STRING,
CHANGEDATE TYPE STRING,
LOSS_FACTOR TYPE STRING,
REF_PROCTIME TYPE STRING,
REF_PTIME_UNIT TYPE STRING,
TZONE TYPE STRING,
TAKTS TYPE STRING,
BR_QUANT TYPE STRING,
BR_QUNIT TYPE STRING,
BR_TIME TYPE STRING,
BR_TUNIT TYPE STRING,
RITT_FLG TYPE STRING,
MDRMODEL TYPE STRING,
SORT TYPE STRING,
SYNC_START TYPE STRING,
SYNC_COMPATIBLE TYPE STRING,
DEFINE_BUCKETS TYPE STRING,
SINGLE_RES_LC TYPE STRING,
SINGLE_RES_TID TYPE STRING,
LC_DAYS_MINUS TYPE STRING,
LC_DAYS_PLUS TYPE STRING,
TRATY TYPE STRING,
STORAGE_CAPABLE TYPE STRING,
SNPLC TYPE STRING,
UTIL_BUCKET TYPE STRING,
VRSIOEX TYPE STRING,
MATRIX_NAME TYPE STRING,
LOCNO TYPE STRING,
TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/VRES_TXT_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_/SAPAPO/VRES_TXT_STR-MANDT sy-vline 
WA_/SAPAPO/VRES_TXT_STR-RESUID sy-vline 
WA_/SAPAPO/VRES_TXT_STR-SIMVERSID sy-vline 
WA_/SAPAPO/VRES_TXT_STR-SIMSESSID sy-vline 
WA_/SAPAPO/VRES_TXT_STR-RESUID_TXT sy-vline 
WA_/SAPAPO/VRES_TXT_STR-SIMVERSID_TXT sy-vline 
WA_/SAPAPO/VRES_TXT_STR-SIMSESSID_TXT sy-vline 
WA_/SAPAPO/VRES_TXT_STR-LANGU sy-vline 
WA_/SAPAPO/VRES_TXT_STR-LCRESID sy-vline 
WA_/SAPAPO/VRES_TXT_STR-TSTREAMID sy-vline 
WA_/SAPAPO/VRES_TXT_STR-UNIT sy-vline 
WA_/SAPAPO/VRES_TXT_STR-NAME sy-vline 
WA_/SAPAPO/VRES_TXT_STR-RESTYPE sy-vline 
WA_/SAPAPO/VRES_TXT_STR-LOCID sy-vline 
WA_/SAPAPO/VRES_TXT_STR-CALENDAR sy-vline 
WA_/SAPAPO/VRES_TXT_STR-TYPE sy-vline 
WA_/SAPAPO/VRES_TXT_STR-DIMENSION sy-vline 
WA_/SAPAPO/VRES_TXT_STR-BEGTI sy-vline 
WA_/SAPAPO/VRES_TXT_STR-ENDTI sy-vline 
WA_/SAPAPO/VRES_TXT_STR-BREAKTIME sy-vline 
WA_/SAPAPO/VRES_TXT_STR-BUFFERTIME sy-vline 
WA_/SAPAPO/VRES_TXT_STR-BUFFERTIME_UNIT sy-vline 
WA_/SAPAPO/VRES_TXT_STR-NOINDIVRES sy-vline 
WA_/SAPAPO/VRES_TXT_STR-NOINDIVRES_UNIT sy-vline 
WA_/SAPAPO/VRES_TXT_STR-INDIVRES_CAP sy-vline 
WA_/SAPAPO/VRES_TXT_STR-UTILIZATION sy-vline 
WA_/SAPAPO/VRES_TXT_STR-CAPACITY_A sy-vline 
WA_/SAPAPO/VRES_TXT_STR-CAPACITY_A_UNIT sy-vline 
WA_/SAPAPO/VRES_TXT_STR-NUM_OF_PERIODS sy-vline 
WA_/SAPAPO/VRES_TXT_STR-PERIOD sy-vline 
WA_/SAPAPO/VRES_TXT_STR-PLANNER sy-vline 
WA_/SAPAPO/VRES_TXT_STR-VERSION_ACTIVE sy-vline 
WA_/SAPAPO/VRES_TXT_STR-FINITE_PLANNING sy-vline 
WA_/SAPAPO/VRES_TXT_STR-IS_BOTTLENECK sy-vline 
WA_/SAPAPO/VRES_TXT_STR-MIN_GAPS sy-vline 
WA_/SAPAPO/VRES_TXT_STR-OVERLOAD sy-vline 
WA_/SAPAPO/VRES_TXT_STR-UNDERLOAD sy-vline 
WA_/SAPAPO/VRES_TXT_STR-OVERLAP_BUCKETS sy-vline 
WA_/SAPAPO/VRES_TXT_STR-START_ON_GRID sy-vline 
WA_/SAPAPO/VRES_TXT_STR-MIN_OVERLAP sy-vline 
WA_/SAPAPO/VRES_TXT_STR-MIN_OVERLAP_UNIT sy-vline 
WA_/SAPAPO/VRES_TXT_STR-MATRIX_ID sy-vline 
WA_/SAPAPO/VRES_TXT_STR-REFUID sy-vline 
WA_/SAPAPO/VRES_TXT_STR-CHANGEUSER sy-vline 
WA_/SAPAPO/VRES_TXT_STR-CHANGEDATE sy-vline 
WA_/SAPAPO/VRES_TXT_STR-LOSS_FACTOR sy-vline 
WA_/SAPAPO/VRES_TXT_STR-REF_PROCTIME sy-vline 
WA_/SAPAPO/VRES_TXT_STR-REF_PTIME_UNIT sy-vline 
WA_/SAPAPO/VRES_TXT_STR-TZONE sy-vline 
WA_/SAPAPO/VRES_TXT_STR-TAKTS sy-vline 
WA_/SAPAPO/VRES_TXT_STR-BR_QUANT sy-vline 
WA_/SAPAPO/VRES_TXT_STR-BR_QUNIT sy-vline 
WA_/SAPAPO/VRES_TXT_STR-BR_TIME sy-vline 
WA_/SAPAPO/VRES_TXT_STR-BR_TUNIT sy-vline 
WA_/SAPAPO/VRES_TXT_STR-RITT_FLG sy-vline 
WA_/SAPAPO/VRES_TXT_STR-MDRMODEL sy-vline 
WA_/SAPAPO/VRES_TXT_STR-SORT sy-vline 
WA_/SAPAPO/VRES_TXT_STR-SYNC_START sy-vline 
WA_/SAPAPO/VRES_TXT_STR-SYNC_COMPATIBLE sy-vline 
WA_/SAPAPO/VRES_TXT_STR-DEFINE_BUCKETS sy-vline 
WA_/SAPAPO/VRES_TXT_STR-SINGLE_RES_LC sy-vline 
WA_/SAPAPO/VRES_TXT_STR-SINGLE_RES_TID sy-vline 
WA_/SAPAPO/VRES_TXT_STR-LC_DAYS_MINUS sy-vline 
WA_/SAPAPO/VRES_TXT_STR-LC_DAYS_PLUS sy-vline 
WA_/SAPAPO/VRES_TXT_STR-TRATY sy-vline 
WA_/SAPAPO/VRES_TXT_STR-STORAGE_CAPABLE sy-vline 
WA_/SAPAPO/VRES_TXT_STR-SNPLC sy-vline 
WA_/SAPAPO/VRES_TXT_STR-UTIL_BUCKET sy-vline 
WA_/SAPAPO/VRES_TXT_STR-VRSIOEX sy-vline 
WA_/SAPAPO/VRES_TXT_STR-MATRIX_NAME sy-vline 
WA_/SAPAPO/VRES_TXT_STR-LOCNO sy-vline 
WA_/SAPAPO/VRES_TXT_STR-TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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