ABAP Select data from SAP table WCAQ 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 WCAQ 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 WCAQ. 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 WCAQ 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_WCAQ TYPE STANDARD TABLE OF WCAQ,
      WA_WCAQ TYPE WCAQ,
      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: <WCAQ> TYPE WCAQ.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCAQ
*  INTO TABLE @DATA(IT_WCAQ2).
*--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_WCAQ INDEX 1 INTO DATA(WA_WCAQ2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WCAQ ASSIGNING <WCAQ>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCAQ>-MANDT = 1.
<WCAQ>-LUNR = 1.
<WCAQ>-VERNR = 1.
<WCAQ>-CCOBJ = 1.
<WCAQ>-CCTYP = 1.
ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WCAQ-TGGRP, sy-vline,
WA_WCAQ-SFIELD, sy-vline,
WA_WCAQ-EXPPROC, sy-vline,
WA_WCAQ-EXPTYP, sy-vline,
WA_WCAQ-CURRPROC, sy-vline,
WA_WCAQ-CURRTYP, sy-vline.
ENDLOOP. *Add any further fields from structure WA_WCAQ 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_WCAQ 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_WCAQ INTO WA_WCAQ. *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 LUNR CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_WCAQ-LUNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_WCAQ-LUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERNR CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_WCAQ-VERNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_WCAQ-VERNR.
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_WCAQ_STR,
MANDT TYPE STRING,
LUNR TYPE STRING,
VERNR TYPE STRING,
CCOBJ TYPE STRING,
CCTYP TYPE STRING,
TGGRP TYPE STRING,
SFIELD TYPE STRING,
EXPPROC TYPE STRING,
EXPTYP TYPE STRING,
CURRPROC TYPE STRING,
CURRTYP TYPE STRING,
LEFTPROC TYPE STRING,
LEFTTYP TYPE STRING,
REMARKS TYPE STRING,
LFLG TYPE STRING,
VERNOTE TYPE STRING,
VERSTAT TYPE STRING,
CONFIRMED TYPE STRING,
COMPLETED TYPE STRING,
VERNAME TYPE STRING,
VERDATE TYPE STRING,
VERTIME TYPE STRING,END OF T_EKKO_STR. DATA: WA_WCAQ_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_WCAQ_STR-MANDT sy-vline
WA_WCAQ_STR-LUNR sy-vline
WA_WCAQ_STR-VERNR sy-vline
WA_WCAQ_STR-CCOBJ sy-vline
WA_WCAQ_STR-CCTYP sy-vline
WA_WCAQ_STR-TGGRP sy-vline
WA_WCAQ_STR-SFIELD sy-vline
WA_WCAQ_STR-EXPPROC sy-vline
WA_WCAQ_STR-EXPTYP sy-vline
WA_WCAQ_STR-CURRPROC sy-vline
WA_WCAQ_STR-CURRTYP sy-vline
WA_WCAQ_STR-LEFTPROC sy-vline
WA_WCAQ_STR-LEFTTYP sy-vline
WA_WCAQ_STR-REMARKS sy-vline
WA_WCAQ_STR-LFLG sy-vline
WA_WCAQ_STR-VERNOTE sy-vline
WA_WCAQ_STR-VERSTAT sy-vline
WA_WCAQ_STR-CONFIRMED sy-vline
WA_WCAQ_STR-COMPLETED sy-vline
WA_WCAQ_STR-VERNAME sy-vline
WA_WCAQ_STR-VERDATE sy-vline
WA_WCAQ_STR-VERTIME sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.