ABAP Select data from SAP table TXW_TPARMS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXW_TPARMS
*  INTO TABLE @DATA(IT_TXW_TPARMS2).
*--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_TXW_TPARMS INDEX 1 INTO DATA(WA_TXW_TPARMS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TXW_TPARMS>-P_CP_FI = 1.
<TXW_TPARMS>-P_CP_CO = 1.
<TXW_TPARMS>-P_CP_CF = 1.
<TXW_TPARMS>-P_CP_AM = 1.
<TXW_TPARMS>-P_CP_MM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXW_TPARMS-P_CP_PO, sy-vline,
  WA_TXW_TPARMS-P_CP_SD, sy-vline,
  WA_TXW_TPARMS-P_CP_DL, sy-vline,
  WA_TXW_TPARMS-P_CP_BI, sy-vline,
  WA_TXW_TPARMS-P_CP_JV, sy-vline,
  WA_TXW_TPARMS-P_CP_EX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXW_TPARMS 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_TXW_TPARMS 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_TXW_TPARMS INTO WA_TXW_TPARMS.


*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_TXW_TPARMS_STR, 
P_CP_FI TYPE STRING,
P_CP_CO TYPE STRING,
P_CP_CF TYPE STRING,
P_CP_AM TYPE STRING,
P_CP_MM TYPE STRING,
P_CP_PO TYPE STRING,
P_CP_SD TYPE STRING,
P_CP_DL TYPE STRING,
P_CP_BI TYPE STRING,
P_CP_JV TYPE STRING,
P_CP_EX TYPE STRING,
P_CP_SU TYPE STRING,
P_TARCH TYPE STRING,
P_TRA_MD TYPE STRING,
P_ALL_MD TYPE STRING,
P_SKB1 TYPE STRING,
P_DDATA TYPE STRING,
P_CCHIER TYPE STRING,
P_PCHIER TYPE STRING,
P_SU1 TYPE STRING,
P_SU2 TYPE STRING,
P_SU3 TYPE STRING,
P_SU4 TYPE STRING,
P_MSTR TYPE STRING,
P_KONV TYPE STRING,
P_COST TYPE STRING,
P_CP_OP TYPE STRING,
P_CP_TR TYPE STRING,
P_CP_TV TYPE STRING,
P_HISTTD TYPE STRING,
P_OLDTD TYPE STRING,
P_CO_SEC TYPE STRING,
P_CO_PRI TYPE STRING,
P_CP_CL TYPE STRING,
P_CP_RE TYPE STRING,
P_CP_CD TYPE STRING,
P_CLGL TYPE STRING,
P_CP_SG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXW_TPARMS_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_TXW_TPARMS_STR-P_CP_FI sy-vline 
WA_TXW_TPARMS_STR-P_CP_CO sy-vline 
WA_TXW_TPARMS_STR-P_CP_CF sy-vline 
WA_TXW_TPARMS_STR-P_CP_AM sy-vline 
WA_TXW_TPARMS_STR-P_CP_MM sy-vline 
WA_TXW_TPARMS_STR-P_CP_PO sy-vline 
WA_TXW_TPARMS_STR-P_CP_SD sy-vline 
WA_TXW_TPARMS_STR-P_CP_DL sy-vline 
WA_TXW_TPARMS_STR-P_CP_BI sy-vline 
WA_TXW_TPARMS_STR-P_CP_JV sy-vline 
WA_TXW_TPARMS_STR-P_CP_EX sy-vline 
WA_TXW_TPARMS_STR-P_CP_SU sy-vline 
WA_TXW_TPARMS_STR-P_TARCH sy-vline 
WA_TXW_TPARMS_STR-P_TRA_MD sy-vline 
WA_TXW_TPARMS_STR-P_ALL_MD sy-vline 
WA_TXW_TPARMS_STR-P_SKB1 sy-vline 
WA_TXW_TPARMS_STR-P_DDATA sy-vline 
WA_TXW_TPARMS_STR-P_CCHIER sy-vline 
WA_TXW_TPARMS_STR-P_PCHIER sy-vline 
WA_TXW_TPARMS_STR-P_SU1 sy-vline 
WA_TXW_TPARMS_STR-P_SU2 sy-vline 
WA_TXW_TPARMS_STR-P_SU3 sy-vline 
WA_TXW_TPARMS_STR-P_SU4 sy-vline 
WA_TXW_TPARMS_STR-P_MSTR sy-vline 
WA_TXW_TPARMS_STR-P_KONV sy-vline 
WA_TXW_TPARMS_STR-P_COST sy-vline 
WA_TXW_TPARMS_STR-P_CP_OP sy-vline 
WA_TXW_TPARMS_STR-P_CP_TR sy-vline 
WA_TXW_TPARMS_STR-P_CP_TV sy-vline 
WA_TXW_TPARMS_STR-P_HISTTD sy-vline 
WA_TXW_TPARMS_STR-P_OLDTD sy-vline 
WA_TXW_TPARMS_STR-P_CO_SEC sy-vline 
WA_TXW_TPARMS_STR-P_CO_PRI sy-vline 
WA_TXW_TPARMS_STR-P_CP_CL sy-vline 
WA_TXW_TPARMS_STR-P_CP_RE sy-vline 
WA_TXW_TPARMS_STR-P_CP_CD sy-vline 
WA_TXW_TPARMS_STR-P_CLGL sy-vline 
WA_TXW_TPARMS_STR-P_CP_SG sy-vline      INTO ld_text SEPARATED BY SPACE.

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