ABAP Select data from SAP table VLC_DIA_HISTORY 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 VLC_DIA_HISTORY 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 VLC_DIA_HISTORY. 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 VLC_DIA_HISTORY 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_VLC_DIA_HISTORY TYPE STANDARD TABLE OF VLC_DIA_HISTORY, WA_VLC_DIA_HISTORY TYPE VLC_DIA_HISTORY, 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: <VLC_DIA_HISTORY> TYPE VLC_DIA_HISTORY. *Process all fields in table header/work area as string values PERFORM process_as_string_field_values CHANGING wa_VLC_DIA_HISTORY. SELECT * *restrict ABAP select to first 10 rows UP TO 10 ROWS FROM VLC_DIA_HISTORY INTO TABLE IT_VLC_DIA_HISTORY. *Select data and declare internal table using in-line method @DATA *SELECT * * FROM VLC_DIA_HISTORY * INTO TABLE @DATA(IT_VLC_DIA_HISTORY2). *--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_VLC_DIA_HISTORY INDEX 1 INTO DATA(WA_VLC_DIA_HISTORY2). *Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL LOOP AT IT_VLC_DIA_HISTORY ASSIGNING <VLC_DIA_HISTORY>.*To update a field value using a field symbol simply change the value via the field symbol pointer
<VLC_DIA_HISTORY>-MANDT = 1.
<VLC_DIA_HISTORY>-VGUID = 1.
<VLC_DIA_HISTORY>-TSTMP = 1.
<VLC_DIA_HISTORY>-ACTDOCTYPE = 1.
<VLC_DIA_HISTORY>-VACTION = 1.
ENDLOOP. LOOP AT IT_VLC_DIA_HISTORY INTO WA_VLC_DIA_HISTORY. *Write horizonal line to screen report. WRITE:/ sy-uline. *Write selected data to screen/report before conversion. WRITE:/ sy-vline, WA_VLC_DIA_HISTORY-VACTIONT, sy-vline,
WA_VLC_DIA_HISTORY-ACTION, sy-vline,
WA_VLC_DIA_HISTORY-ACT_T, sy-vline,
WA_VLC_DIA_HISTORY-MMCTR, sy-vline,
WA_VLC_DIA_HISTORY-MMSTA_OLD, sy-vline,
WA_VLC_DIA_HISTORY-MMSTA_NEW, sy-vline.
ENDLOOP. *Add any further fields from structure WA_VLC_DIA_HISTORY 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_VLC_DIA_HISTORY 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_VLC_DIA_HISTORY INTO WA_VLC_DIA_HISTORY. *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 KUNNR CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_VLC_DIA_HISTORY-KUNNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_VLC_DIA_HISTORY-KUNNR.
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_VLC_DIA_HISTORY_STR,
MANDT TYPE STRING,
VGUID TYPE STRING,
TSTMP TYPE STRING,
ACTDOCTYPE TYPE STRING,
VACTION TYPE STRING,
VACTIONT TYPE STRING,
ACTION TYPE STRING,
ACT_T TYPE STRING,
MMCTR TYPE STRING,
MMSTA_OLD TYPE STRING,
MMSTA_NEW TYPE STRING,
MMSTA_NEWT TYPE STRING,
SDCTR TYPE STRING,
SDSTA_OLD TYPE STRING,
SDSTA_NEW TYPE STRING,
SDSTA_NEWT TYPE STRING,
LOCTN TYPE STRING,
LOCTNCITY TYPE STRING,
LOCTNTXT TYPE STRING,
KUNNR TYPE STRING,
CU_NAME1 TYPE STRING,
ERNAM TYPE STRING,END OF T_EKKO_STR. DATA: WA_VLC_DIA_HISTORY_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_VLC_DIA_HISTORY_STR-MANDT sy-vline
WA_VLC_DIA_HISTORY_STR-VGUID sy-vline
WA_VLC_DIA_HISTORY_STR-TSTMP sy-vline
WA_VLC_DIA_HISTORY_STR-ACTDOCTYPE sy-vline
WA_VLC_DIA_HISTORY_STR-VACTION sy-vline
WA_VLC_DIA_HISTORY_STR-VACTIONT sy-vline
WA_VLC_DIA_HISTORY_STR-ACTION sy-vline
WA_VLC_DIA_HISTORY_STR-ACT_T sy-vline
WA_VLC_DIA_HISTORY_STR-MMCTR sy-vline
WA_VLC_DIA_HISTORY_STR-MMSTA_OLD sy-vline
WA_VLC_DIA_HISTORY_STR-MMSTA_NEW sy-vline
WA_VLC_DIA_HISTORY_STR-MMSTA_NEWT sy-vline
WA_VLC_DIA_HISTORY_STR-SDCTR sy-vline
WA_VLC_DIA_HISTORY_STR-SDSTA_OLD sy-vline
WA_VLC_DIA_HISTORY_STR-SDSTA_NEW sy-vline
WA_VLC_DIA_HISTORY_STR-SDSTA_NEWT sy-vline
WA_VLC_DIA_HISTORY_STR-LOCTN sy-vline
WA_VLC_DIA_HISTORY_STR-LOCTNCITY sy-vline
WA_VLC_DIA_HISTORY_STR-LOCTNTXT sy-vline
WA_VLC_DIA_HISTORY_STR-KUNNR sy-vline
WA_VLC_DIA_HISTORY_STR-CU_NAME1 sy-vline
WA_VLC_DIA_HISTORY_STR-ERNAM sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.