ABAP Select data from SAP table TCHS_HD_STRUCT_INFO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TCHS_HD_STRUCT_INFO
*  INTO TABLE @DATA(IT_TCHS_HD_STRUCT_INFO2).
*--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_TCHS_HD_STRUCT_INFO INDEX 1 INTO DATA(WA_TCHS_HD_STRUCT_INFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TCHS_HD_STRUCT_INFO>-PARTNER = 1.
<TCHS_HD_STRUCT_INFO>-PARTNER_TXT = 1.
<TCHS_HD_STRUCT_INFO>-TERM_START = 1.
<TCHS_HD_STRUCT_INFO>-TERM_END = 1.
<TCHS_HD_STRUCT_INFO>-NOM_AMOUNT_IN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TCHS_HD_STRUCT_INFO-NOM_AMT_CURR_IN, sy-vline,
  WA_TCHS_HD_STRUCT_INFO-EFFECTIVE_FROM_IN, sy-vline,
  WA_TCHS_HD_STRUCT_INFO-DUE_DATE_IN, sy-vline,
  WA_TCHS_HD_STRUCT_INFO-FREQ_MONTHS_IN, sy-vline,
  WA_TCHS_HD_STRUCT_INFO-FREQ_DAYS_IN, sy-vline,
  WA_TCHS_HD_STRUCT_INFO-REF_INT_RATE_IN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TCHS_HD_STRUCT_INFO 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_TCHS_HD_STRUCT_INFO 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_TCHS_HD_STRUCT_INFO INTO WA_TCHS_HD_STRUCT_INFO.


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

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

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

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

*Conversion exit CUNIT, internal->external for field PRICE_UOM_OUT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TCHS_HD_STRUCT_INFO-PRICE_UOM_OUT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TCHS_HD_STRUCT_INFO-PRICE_UOM_OUT.
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_TCHS_HD_STRUCT_INFO_STR, 
PARTNER TYPE STRING,
PARTNER_TXT TYPE STRING,
TERM_START TYPE STRING,
TERM_END TYPE STRING,
NOM_AMOUNT_IN TYPE STRING,
NOM_AMT_CURR_IN TYPE STRING,
EFFECTIVE_FROM_IN TYPE STRING,
DUE_DATE_IN TYPE STRING,
FREQ_MONTHS_IN TYPE STRING,
FREQ_DAYS_IN TYPE STRING,
REF_INT_RATE_IN TYPE STRING,
INT_RATE_SIGN_IN TYPE STRING,
INT_SPREAD_IN TYPE STRING,
INT_CALC_METH_IN TYPE STRING,
FIXED_INT_RATE_IN TYPE STRING,
NOM_AMOUNT_OUT TYPE STRING,
NOM_AMT_CURR_OUT TYPE STRING,
EFFECTIVE_FROM_OUT TYPE STRING,
DUE_DATE_OUT TYPE STRING,
FREQ_MONTHS_OUT TYPE STRING,
FREQ_DAYS_OUT TYPE STRING,
REF_INT_RATE_OUT TYPE STRING,
INT_RATE_SIGN_OUT TYPE STRING,
INT_SPREAD_OUT TYPE STRING,
INT_CALC_METH_OUT TYPE STRING,
FIXED_INT_RATE_OUT TYPE STRING,
COMMODITY_ID_IN TYPE STRING,
QUANTITY_IN TYPE STRING,
UNIT_OF_MEASURE_IN TYPE STRING,
LOCATION_IN TYPE STRING,
CONTRACT_PRICE_IN TYPE STRING,
SPREAD_IN TYPE STRING,
PRICE_CURR_UNIT_IN TYPE STRING,
PRICE_UOM_IN TYPE STRING,
SPOT_PRICE_IN TYPE STRING,
WZBETR_IN TYPE STRING,
COMMODITY_ID_OUT TYPE STRING,
QUANTITY_OUT TYPE STRING,
UNIT_OF_MEASURE_OUT TYPE STRING,
LOCATION_OUT TYPE STRING,
CONTRACT_PRICE_OUT TYPE STRING,
SPREAD_OUT TYPE STRING,
PRICE_CURR_UNIT_OUT TYPE STRING,
PRICE_UOM_OUT TYPE STRING,
SPOT_PRICE_OUT TYPE STRING,
WZBETR_OUT TYPE STRING,
BUY_AMOUNT TYPE STRING,
BUY_CRCY TYPE STRING,
BUY_CRCY_TXT TYPE STRING,
SELL_AMOUNT TYPE STRING,
SELL_CRCY TYPE STRING,
SELL_CRCY_TXT TYPE STRING,
VALUE_DATE TYPE STRING,
FX_RATE TYPE STRING,
FX_FIX_DATE TYPE STRING,
FX_SETTL_CRCY TYPE STRING,
OPT_EXEC_DATE TYPE STRING,
OPT_SETTL_IND TYPE STRING,
OPT_SETTL_IND_TXT TYPE STRING,
OPT_EXERCISE_TYPE TYPE STRING,
OPT_EXERCISE_TYPE_TXT TYPE STRING,
OPT_STRIKE_CRCY TYPE STRING,
OPT_STRIKE_CRCY_TXT TYPE STRING,
OPT_STRIKE_AMNT TYPE STRING,
OPT_STRIKE_RATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TCHS_HD_STRUCT_INFO_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_TCHS_HD_STRUCT_INFO_STR-PARTNER sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-PARTNER_TXT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-TERM_START sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-TERM_END sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-NOM_AMOUNT_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-NOM_AMT_CURR_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-EFFECTIVE_FROM_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-DUE_DATE_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-FREQ_MONTHS_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-FREQ_DAYS_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-REF_INT_RATE_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-INT_RATE_SIGN_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-INT_SPREAD_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-INT_CALC_METH_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-FIXED_INT_RATE_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-NOM_AMOUNT_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-NOM_AMT_CURR_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-EFFECTIVE_FROM_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-DUE_DATE_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-FREQ_MONTHS_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-FREQ_DAYS_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-REF_INT_RATE_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-INT_RATE_SIGN_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-INT_SPREAD_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-INT_CALC_METH_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-FIXED_INT_RATE_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-COMMODITY_ID_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-QUANTITY_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-UNIT_OF_MEASURE_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-LOCATION_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-CONTRACT_PRICE_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-SPREAD_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-PRICE_CURR_UNIT_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-PRICE_UOM_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-SPOT_PRICE_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-WZBETR_IN sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-COMMODITY_ID_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-QUANTITY_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-UNIT_OF_MEASURE_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-LOCATION_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-CONTRACT_PRICE_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-SPREAD_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-PRICE_CURR_UNIT_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-PRICE_UOM_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-SPOT_PRICE_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-WZBETR_OUT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-BUY_AMOUNT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-BUY_CRCY sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-BUY_CRCY_TXT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-SELL_AMOUNT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-SELL_CRCY sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-SELL_CRCY_TXT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-VALUE_DATE sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-FX_RATE sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-FX_FIX_DATE sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-FX_SETTL_CRCY sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-OPT_EXEC_DATE sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-OPT_SETTL_IND sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-OPT_SETTL_IND_TXT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-OPT_EXERCISE_TYPE sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-OPT_EXERCISE_TYPE_TXT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-OPT_STRIKE_CRCY sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-OPT_STRIKE_CRCY_TXT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-OPT_STRIKE_AMNT sy-vline 
WA_TCHS_HD_STRUCT_INFO_STR-OPT_STRIKE_RATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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