ABAP Select data from SAP table THXEV_EFF_TMET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM THXEV_EFF_TMET
*  INTO TABLE @DATA(IT_THXEV_EFF_TMET2).
*--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_THXEV_EFF_TMET INDEX 1 INTO DATA(WA_THXEV_EFF_TMET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<THXEV_EFF_TMET>-MANDT = 1.
<THXEV_EFF_TMET>-EFF_TEST_MET = 1.
<THXEV_EFF_TMET>-TEXT = 1.
<THXEV_EFF_TMET>-EFF_TEST_MET_CAT = 1.
<THXEV_EFF_TMET>-OFF_CAL_CAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_THXEV_EFF_TMET-PRO_DT_GEN_LOGIC, sy-vline,
  WA_THXEV_EFF_TMET-EFF_START_DATE, sy-vline,
  WA_THXEV_EFF_TMET-EFF_RATIO_MIN, sy-vline,
  WA_THXEV_EFF_TMET-EFF_RATIO_MAX, sy-vline,
  WA_THXEV_EFF_TMET-DIV_INHERIT_METH, sy-vline,
  WA_THXEV_EFF_TMET-NOISE_THRESHOLD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_THXEV_EFF_TMET 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_THXEV_EFF_TMET 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_THXEV_EFF_TMET INTO WA_THXEV_EFF_TMET.


*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_THXEV_EFF_TMET_STR, 
MANDT TYPE STRING,
EFF_TEST_MET TYPE STRING,
TEXT TYPE STRING,
EFF_TEST_MET_CAT TYPE STRING,
OFF_CAL_CAT TYPE STRING,
PRO_DT_GEN_LOGIC TYPE STRING,
EFF_START_DATE TYPE STRING,
EFF_RATIO_MIN TYPE STRING,
EFF_RATIO_MAX TYPE STRING,
DIV_INHERIT_METH TYPE STRING,
NOISE_THRESHOLD TYPE STRING,
TRANSITION_SPEED TYPE STRING,
LINREG_NO_OF_PNT TYPE STRING,
LINREG_SLICE_TYP TYPE STRING,
LINREG_CALENDAR TYPE STRING,
LINREG_HOL_MOVE TYPE STRING,
REG_EFF_CTRL TYPE STRING,
ALPHA TYPE STRING,
R2_MIN TYPE STRING,
R2_MAX TYPE STRING,
CBETA1_MIN TYPE STRING,
CBETA1_MAX TYPE STRING,
CBETA2_MIN TYPE STRING,
CBETA2_MAX TYPE STRING,
T_STAT_SLOPE TYPE STRING,
EFF_ASSMT_METHOD TYPE STRING,
EFF_COND_TYPE TYPE STRING,
FLG_CONSID_R2 TYPE STRING,
FLG_CONSID_BETA2 TYPE STRING,
FLG_CONSID_BETA1 TYPE STRING,
FLG_CONSID_TSTAT TYPE STRING,
PRO_MD_CAL_LOGIC TYPE STRING,
NO_BASIS_POINTS TYPE STRING,
CRIT_TERM_TYPE TYPE STRING,
FLG_DELTA_ZERO TYPE STRING,
FLG_SUPPRESS_CVA_CALC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_THXEV_EFF_TMET_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_THXEV_EFF_TMET_STR-MANDT sy-vline 
WA_THXEV_EFF_TMET_STR-EFF_TEST_MET sy-vline 
WA_THXEV_EFF_TMET_STR-TEXT sy-vline 
WA_THXEV_EFF_TMET_STR-EFF_TEST_MET_CAT sy-vline 
WA_THXEV_EFF_TMET_STR-OFF_CAL_CAT sy-vline 
WA_THXEV_EFF_TMET_STR-PRO_DT_GEN_LOGIC sy-vline 
WA_THXEV_EFF_TMET_STR-EFF_START_DATE sy-vline 
WA_THXEV_EFF_TMET_STR-EFF_RATIO_MIN sy-vline 
WA_THXEV_EFF_TMET_STR-EFF_RATIO_MAX sy-vline 
WA_THXEV_EFF_TMET_STR-DIV_INHERIT_METH sy-vline 
WA_THXEV_EFF_TMET_STR-NOISE_THRESHOLD sy-vline 
WA_THXEV_EFF_TMET_STR-TRANSITION_SPEED sy-vline 
WA_THXEV_EFF_TMET_STR-LINREG_NO_OF_PNT sy-vline 
WA_THXEV_EFF_TMET_STR-LINREG_SLICE_TYP sy-vline 
WA_THXEV_EFF_TMET_STR-LINREG_CALENDAR sy-vline 
WA_THXEV_EFF_TMET_STR-LINREG_HOL_MOVE sy-vline 
WA_THXEV_EFF_TMET_STR-REG_EFF_CTRL sy-vline 
WA_THXEV_EFF_TMET_STR-ALPHA sy-vline 
WA_THXEV_EFF_TMET_STR-R2_MIN sy-vline 
WA_THXEV_EFF_TMET_STR-R2_MAX sy-vline 
WA_THXEV_EFF_TMET_STR-CBETA1_MIN sy-vline 
WA_THXEV_EFF_TMET_STR-CBETA1_MAX sy-vline 
WA_THXEV_EFF_TMET_STR-CBETA2_MIN sy-vline 
WA_THXEV_EFF_TMET_STR-CBETA2_MAX sy-vline 
WA_THXEV_EFF_TMET_STR-T_STAT_SLOPE sy-vline 
WA_THXEV_EFF_TMET_STR-EFF_ASSMT_METHOD sy-vline 
WA_THXEV_EFF_TMET_STR-EFF_COND_TYPE sy-vline 
WA_THXEV_EFF_TMET_STR-FLG_CONSID_R2 sy-vline 
WA_THXEV_EFF_TMET_STR-FLG_CONSID_BETA2 sy-vline 
WA_THXEV_EFF_TMET_STR-FLG_CONSID_BETA1 sy-vline 
WA_THXEV_EFF_TMET_STR-FLG_CONSID_TSTAT sy-vline 
WA_THXEV_EFF_TMET_STR-PRO_MD_CAL_LOGIC sy-vline 
WA_THXEV_EFF_TMET_STR-NO_BASIS_POINTS sy-vline 
WA_THXEV_EFF_TMET_STR-CRIT_TERM_TYPE sy-vline 
WA_THXEV_EFF_TMET_STR-FLG_DELTA_ZERO sy-vline 
WA_THXEV_EFF_TMET_STR-FLG_SUPPRESS_CVA_CALC sy-vline      INTO ld_text SEPARATED BY SPACE.

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