ABAP Select data from SAP table WTRAH into internal table
Get Example source ABAP code based on a different SAP table
Below is a number of ABAP code snippets to demonstrate how to select data from SAP WTRAH 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 WTRAH. 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 WTRAH 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_WTRAH TYPE STANDARD TABLE OF WTRAH, WA_WTRAH TYPE WTRAH, 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: <WTRAH> TYPE WTRAH. *Process all fields in table header/work area as string values PERFORM process_as_string_field_values CHANGING wa_WTRAH. SELECT * *restrict ABAP select to first 10 rows UP TO 10 ROWS FROM WTRAH INTO TABLE IT_WTRAH. *Select data and declare internal table using in-line method @DATA *SELECT * * FROM WTRAH * INTO TABLE @DATA(IT_WTRAH2). *--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_WTRAH INDEX 1 INTO DATA(WA_WTRAH2). *Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL LOOP AT IT_WTRAH ASSIGNING <WTRAH>.*To update a field value using a field symbol simply change the value via the field symbol pointer
<WTRAH>-MANDT = 1.
<WTRAH>-LOGNR = 1.
<WTRAH>-REPNAME = 1.
<WTRAH>-USERNAME = 1.
<WTRAH>-DATUM = 1.
ENDLOOP. LOOP AT IT_WTRAH INTO WA_WTRAH. *Write horizonal line to screen report. WRITE:/ sy-uline. *Write selected data to screen/report before conversion. WRITE:/ sy-vline, WA_WTRAH-WRATIMEZONE, sy-vline,
WA_WTRAH-PROTSAVECHK, sy-vline,
WA_WTRAH-PROTNOTE, sy-vline,
ENDLOOP. *Add any further fields from structure WA_WTRAH 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_WTRAH 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_WTRAH INTO WA_WTRAH. *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 LOGNR CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_WTRAH-LOGNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_WTRAH-LOGNR.
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_WTRAH_STR,
MANDT TYPE STRING,
LOGNR TYPE STRING,
REPNAME TYPE STRING,
USERNAME TYPE STRING,
DATUM TYPE STRING,
WRATIMEZONE TYPE STRING,
PROTSAVECHK TYPE STRING,
PROTNOTE TYPE STRING,END OF T_EKKO_STR. DATA: WA_WTRAH_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_WTRAH_STR-MANDT sy-vline
WA_WTRAH_STR-LOGNR sy-vline
WA_WTRAH_STR-REPNAME sy-vline
WA_WTRAH_STR-USERNAME sy-vline
WA_WTRAH_STR-DATUM sy-vline
WA_WTRAH_STR-WRATIMEZONE sy-vline
WA_WTRAH_STR-PROTSAVECHK sy-vline
WA_WTRAH_STR-PROTNOTE sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.