ABAP Select data from SAP table A4CG 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 A4CG 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 A4CG. 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 A4CG 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_A4CG TYPE STANDARD TABLE OF A4CG, WA_A4CG TYPE A4CG, 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: <A4CG> TYPE A4CG. *Process all fields in table header/work area as string values PERFORM process_as_string_field_values CHANGING wa_A4CG. SELECT * *restrict ABAP select to first 10 rows UP TO 10 ROWS FROM A4CG INTO TABLE IT_A4CG. *Select data and declare internal table using in-line method @DATA *SELECT * * FROM A4CG * INTO TABLE @DATA(IT_A4CG2). *--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_A4CG INDEX 1 INTO DATA(WA_A4CG2). *Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL LOOP AT IT_A4CG ASSIGNING <A4CG>.*To update a field value using a field symbol simply change the value via the field symbol pointer
<A4CG>-MANDT = 1.
<A4CG>-KAPPL = 1.
<A4CG>-KSCHL = 1.
<A4CG>-ALAND = 1.
<A4CG>-WKREG = 1.
ENDLOOP. LOOP AT IT_A4CG INTO WA_A4CG. *Write horizonal line to screen report. WRITE:/ sy-uline. *Write selected data to screen/report before conversion. WRITE:/ sy-vline, WA_A4CG-TAXK1, sy-vline,
WA_A4CG-TAXM1, sy-vline,
WA_A4CG-AUART_SD, sy-vline,
WA_A4CG-KFRST, sy-vline,
WA_A4CG-DATBI, sy-vline,
WA_A4CG-DATAB, sy-vline.
ENDLOOP. *Add any further fields from structure WA_A4CG 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_A4CG 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_A4CG INTO WA_A4CG. *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 AUART, internal->external for field AUART_SD CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT' EXPORTING input = WA_A4CG-AUART_SD IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_A4CG-AUART_SD.
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_A4CG_STR,
MANDT TYPE STRING,
KAPPL TYPE STRING,
KSCHL TYPE STRING,
ALAND TYPE STRING,
WKREG TYPE STRING,
TAXK1 TYPE STRING,
TAXM1 TYPE STRING,
AUART_SD TYPE STRING,
KFRST TYPE STRING,
DATBI TYPE STRING,
DATAB TYPE STRING,
KBSTAT TYPE STRING,
KNUMH TYPE STRING,END OF T_EKKO_STR. DATA: WA_A4CG_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_A4CG_STR-MANDT sy-vline
WA_A4CG_STR-KAPPL sy-vline
WA_A4CG_STR-KSCHL sy-vline
WA_A4CG_STR-ALAND sy-vline
WA_A4CG_STR-WKREG sy-vline
WA_A4CG_STR-TAXK1 sy-vline
WA_A4CG_STR-TAXM1 sy-vline
WA_A4CG_STR-AUART_SD sy-vline
WA_A4CG_STR-KFRST sy-vline
WA_A4CG_STR-DATBI sy-vline
WA_A4CG_STR-DATAB sy-vline
WA_A4CG_STR-KBSTAT sy-vline
WA_A4CG_STR-KNUMH sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.