ABAP Select data from SAP table TRLS_POS_VAL_KEYF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRLS_POS_VAL_KEYF
*  INTO TABLE @DATA(IT_TRLS_POS_VAL_KEYF2).
*--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_TRLS_POS_VAL_KEYF INDEX 1 INTO DATA(WA_TRLS_POS_VAL_KEYF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRLS_POS_VAL_KEYF>-UNITS = 1.
<TRLS_POS_VAL_KEYF>-NOMINAL_AMT = 1.
<TRLS_POS_VAL_KEYF>-NOMINAL_ORG_AMT = 1.
<TRLS_POS_VAL_KEYF>-VC_1001 = 1.
<TRLS_POS_VAL_KEYF>-PC_1001 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRLS_POS_VAL_KEYF-VC_1002, sy-vline,
  WA_TRLS_POS_VAL_KEYF-PC_1002, sy-vline,
  WA_TRLS_POS_VAL_KEYF-VC_1003, sy-vline,
  WA_TRLS_POS_VAL_KEYF-VC_1004, sy-vline,
  WA_TRLS_POS_VAL_KEYF-PC_1004, sy-vline,
  WA_TRLS_POS_VAL_KEYF-VC_1005, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRLS_POS_VAL_KEYF 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_TRLS_POS_VAL_KEYF 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_TRLS_POS_VAL_KEYF INTO WA_TRLS_POS_VAL_KEYF.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TRLS_POS_VAL_KEYF_STR, 
UNITS TYPE STRING,
NOMINAL_AMT TYPE STRING,
NOMINAL_ORG_AMT TYPE STRING,
VC_1001 TYPE STRING,
PC_1001 TYPE STRING,
VC_1002 TYPE STRING,
PC_1002 TYPE STRING,
VC_1003 TYPE STRING,
VC_1004 TYPE STRING,
PC_1004 TYPE STRING,
VC_1005 TYPE STRING,
PC_1005 TYPE STRING,
VC_1006 TYPE STRING,
VC_1007 TYPE STRING,
PC_1007 TYPE STRING,
VC_1008 TYPE STRING,
PC_1008 TYPE STRING,
VC_1009 TYPE STRING,
PC_1009 TYPE STRING,
VC_1010 TYPE STRING,
PC_1010 TYPE STRING,
VC_1011 TYPE STRING,
VC_1012 TYPE STRING,
PC_1012 TYPE STRING,
VC_1013 TYPE STRING,
PC_1013 TYPE STRING,
VC_1014 TYPE STRING,
VC_1015 TYPE STRING,
PC_1015 TYPE STRING,
VC_1016 TYPE STRING,
PC_1016 TYPE STRING,
VC_1017 TYPE STRING,
VC_1018 TYPE STRING,
PC_1018 TYPE STRING,
VC_1019 TYPE STRING,
PC_1019 TYPE STRING,
VC_9001 TYPE STRING,
PC_9001 TYPE STRING,
VC_9002 TYPE STRING,
PC_9002 TYPE STRING,
VC_9003 TYPE STRING,
PC_9003 TYPE STRING,
VC_9004 TYPE STRING,
PC_9004 TYPE STRING,
VC_1306 TYPE STRING,
PC_1306 TYPE STRING,
VC_1307 TYPE STRING,
VC_1308 TYPE STRING,
PC_1308 TYPE STRING,
VC_1309 TYPE STRING,
VC_1310 TYPE STRING,
PC_1310 TYPE STRING,
VC_1311 TYPE STRING,
VC_1312 TYPE STRING,
PC_1312 TYPE STRING,
VC_1313 TYPE STRING,
VC_1314 TYPE STRING,
PC_1314 TYPE STRING,
VC_1315 TYPE STRING,
VC_9005 TYPE STRING,
PC_9005 TYPE STRING,
VC_1030 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRLS_POS_VAL_KEYF_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_TRLS_POS_VAL_KEYF_STR-UNITS sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-NOMINAL_AMT sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-NOMINAL_ORG_AMT sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1001 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1001 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1002 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1002 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1003 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1004 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1004 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1005 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1005 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1006 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1007 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1007 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1008 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1008 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1009 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1009 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1010 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1010 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1011 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1012 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1012 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1013 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1013 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1014 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1015 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1015 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1016 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1016 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1017 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1018 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1018 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1019 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1019 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_9001 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_9001 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_9002 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_9002 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_9003 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_9003 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_9004 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_9004 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1306 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1306 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1307 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1308 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1308 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1309 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1310 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1310 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1311 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1312 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1312 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1313 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1314 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_1314 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1315 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_9005 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-PC_9005 sy-vline 
WA_TRLS_POS_VAL_KEYF_STR-VC_1030 sy-vline      INTO ld_text SEPARATED BY SPACE.

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