Warning: Long blog ahead! If you’ve ever written code for a complicated ABAP INNER JOIN, you will not regret the time you will spend here…
Foreword
I prefer the “By a developer, for other developers” approach, to the “By a developer, for himself” approach. Ever noticed how, although it would seem like pure coincidence(or divine intervention!), two or more people manage to find solutions to two separate parts of the same problem, without even collaborating in real time… this is a story of one such experience!
The need
For years now, every time I train developers on ABAP, or mentor them during projects, I have consistently heard quite a few of them complain about how complicated they think it is to construct an Open SQL SELECT statement that’s based on a join on several transparent tables. Of course, there are tools like SAP Query(SQ01) that could help, but to create a query object for just extracting the SELECT statement is overkill. So one day, in mid-2007, I thought: why not create a simple copy-paste program that could automate the whole thing? This tool is borne out of this idea.
The Concept
From the very beginning, I had an eye on contributing this tool and it’s usage to the community… The intended target audience for this tool consists of beginner, impatient or generally lazy ABAP developers(hmm I think I covered everybody there!) who need to create SELECT statements in code that requires them to join two or more transparent tables. The design goals were:
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The tool should allow users to quickly construct INNER JOIN-based queries that could be literally pasted into an ABAP program. It should, therefore, involve as few dialogs as possible and very little in terms of navigational effort.
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The developer needs to know the table names, and the order in which they happen to be related and not the exact fields involved in the relationship. The tool should lead to discovery of the exact join conditions.
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After the base table, the choice for subsequent tables must be based on existing foreign keys, very similar to Views Transaction SE11
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Keep it SIMPLE !
You decide if this program meets its objectives, but then I’m throwing this into the community to be improved/modified/discarded. If you like it, use it… If you don’t, I presume you love ABAP Joins so you can help make it better for the rest of us 😉
The Code
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* ''~`` * ( o o ) * +------------------.oooO--(_)--Oooo.------------------+ * | ZJOINER - Generates join-based SELECT statements | * | so you can spend more time on SDN ;-) | * | Concept and code: Dushyant Shetty | * | .oooO | * | ( ) Oooo. 20070711 | * +---------------------) (----( )--------------------+ * \_) ) / * (_/ REPORT zjoiner NO STANDARD PAGE HEADING LINE-SIZE 130. TYPE-POOLS: icon. DATA: flagpop, title LIKE sy-title VALUE 'Select the tables you wish to join', BEGIN OF watab, tno TYPE i, parent TYPE i, tabname TYPE dd02l-tabname, END OF watab, jtables LIKE TABLE OF watab, cur_field(25), b_sel(18) VALUE 'Select base table', b_rel(14) VALUE 'Related Tables', b_del(12) VALUE 'Delete Table', b_dis(18) VALUE 'Display Conditions', b_fld(16) VALUE 'Select Fields', b_exe(30) VALUE 'Generate SELECT statement!', b_cop(30) VALUE 'Copy Query to Clipboard...', b_hel(36) VALUE 'Click here for detailed instructions', BEGIN OF wa_joins, ltab TYPE dd02l-tabname, rtab TYPE dd02l-tabname, jtype, field1 TYPE dd03l-fieldname, field2 TYPE dd03l-fieldname, END OF wa_joins, it_joins LIKE TABLE OF wa_joins, BEGIN OF wa_av_fields, tabname TYPE dd02l-tabname, fieldname TYPE dd03l-fieldname, alias TYPE dd03l-fieldname, text TYPE dd04t-scrtext_l, selected, pos TYPE i, END OF wa_av_fields, it_av_fields LIKE TABLE OF wa_av_fields, t_done(75) VALUE 'Click the cancel button (F12) when done..', flagsel, qtext(72), qtab LIKE TABLE OF qtext, not_all. *Declarations for relationships TYPES: BEGIN OF ddtab_tabdef, dd02v LIKE dd02v, dd03p LIKE dd03p OCCURS 0, dd05m LIKE dd05m OCCURS 0, dd08v LIKE dd08v OCCURS 0, END OF ddtab_tabdef, ddtab_set TYPE ddtab_tabdef OCCURS 10. DATA BEGIN OF ddtb. INCLUDE STRUCTURE dd27p. DATA: mark(1), mod(1). DATA END OF ddtb. DATA: ddtb_tab LIKE ddtb OCCURS 50 WITH HEADER LINE. DATA: base_tabs TYPE ddtab_set. DATA BEGIN OF itab1. INCLUDE STRUCTURE dd26v. DATA: mark(1). DATA END OF itab1. DATA: tc1_tab LIKE itab1 OCCURS 10 WITH HEADER LINE. DATA BEGIN OF itab2. INCLUDE STRUCTURE dd28j. DATA: mark(1). DATA END OF itab2. DATA: tc2_tab LIKE itab2 OCCURS 10 WITH HEADER LINE. DATA BEGIN OF itab3. INCLUDE STRUCTURE dd28v. DATA: mark(1). DATA END OF itab3. DATA: tc3_tab LIKE itab3 OCCURS 10 WITH HEADER LINE. DATA: i TYPE i. DATA subrc LIKE sy-subrc. DATA ddxx LIKE dd25v. *---------------------------------------------------------------------* * CLASS lcl_type DEFINITION *---------------------------------------------------------------------* * *---------------------------------------------------------------------* CLASS lcl_type DEFINITION. PUBLIC SECTION. CLASS-METHODS get_type IMPORTING name TYPE string RETURNING value(ty) TYPE string. ENDCLASS. "lcl_type DEFINITION *---------------------------------------------------------------------* * CLASS lcl_type IMPLEMENTATION *---------------------------------------------------------------------* * *---------------------------------------------------------------------* CLASS lcl_type IMPLEMENTATION. METHOD get_type. DATA: des TYPE REF TO cl_abap_elemdescr, df TYPE dfies. des ?= cl_abap_typedescr=>describe_by_name( name ). df = des->get_ddic_field( ). ty = df-datatype. ENDMETHOD. "get_type ENDCLASS. "lcl_type IMPLEMENTATION START-OF-SELECTION. SET BLANK LINES ON. sy-title = title. watab-tno = 1. APPEND watab TO jtables. PERFORM list_tabs. AT LINE-SELECTION. CASE sy-lsind. WHEN 1. GET CURSOR FIELD cur_field. CASE cur_field. WHEN 'ICON_SEARCH' OR 'B_SEL'. PERFORM value_help. PERFORM list_tabs. sy-lsind = 0. WHEN 'ICON_REFERENCE_LIST' OR 'B_REL'. CLEAR: ddtb, ddtb_tab[], base_tabs[], itab1, tc1_tab[], itab2, tc2_tab[], itab3, tc3_tab[], i, subrc, ddxx. tc1_tab-viewname = 'ZV_DUSTYPLANET'. tc1_tab-tabname = watab-tabname. tc1_tab-fortabname = watab-tabname. tc1_tab-mark = 'X'. APPEND tc1_tab. PERFORM v_list_joins. CLEAR qtab[]. PERFORM list_tabs. sy-lsind = 0. WHEN 'ICON_DISPLAY' OR 'B_DIS'. CHECK watab-tno NE 1. PERFORM show_relationship. WHEN 'ICON_DELETE' OR 'B_DEL'. PERFORM confirm_delete. CLEAR qtab[]. PERFORM del_table_and_joins USING watab-tno. PERFORM reorg_tables. PERFORM list_tabs. sy-lsind = 0. WHEN 'ICON_TERMINOLOGY' OR 'B_FLD'. CLEAR qtab[]. WINDOW STARTING AT 10 10 ENDING AT 120 25. PERFORM select_fields. WHEN 'ICON_EXECUTE_OBJECT' OR 'B_EXE'. PERFORM check_fields. PERFORM gen_query. PERFORM list_tabs. sy-lsind = 0. WHEN 'ICON_SYSTEM_COPY' OR 'B_COP'. PERFORM copy_to_clipboard. WHEN 'ICON_SYSTEM_HELP' OR 'B_HEL'. PERFORM load_help. ENDCASE. WHEN 2. GET CURSOR FIELD cur_field. CASE cur_field. WHEN 'ICON_INSERT_ROW'. READ TABLE it_av_fields INTO wa_av_fields WITH KEY tabname = wa_av_fields-tabname fieldname = wa_av_fields-fieldname. PERFORM check_alias USING wa_av_fields. wa_av_fields-selected = 'X'. MODIFY it_av_fields FROM wa_av_fields TRANSPORTING selected alias WHERE tabname = wa_av_fields-tabname AND fieldname = wa_av_fields-fieldname. PERFORM select_fields. SCROLL LIST INDEX sy-lsind TO PAGE 1 LINE sy-staro. sy-lsind = 1. WHEN 'ICON_DELETE_ROW'. READ TABLE it_av_fields INTO wa_av_fields WITH KEY tabname = wa_av_fields-tabname fieldname = wa_av_fields-fieldname. CLEAR: wa_av_fields-selected, wa_av_fields-alias. MODIFY it_av_fields FROM wa_av_fields INDEX sy-tabix. PERFORM select_fields. SCROLL LIST INDEX sy-lsind TO PAGE 1 LINE sy-staro. sy-lsind = 1. WHEN 'ICON_WORKFLOW_ACTIVITY'. PERFORM add_all_fields USING wa_av_fields-tabname. PERFORM select_fields. SCROLL LIST INDEX sy-lsind TO PAGE 1 LINE sy-staro. sy-lsind = 1. ENDCASE. ENDCASE. TOP-OF-PAGE. FORMAT COLOR COL_HEADING INTENSIFIED. ULINE. WRITE: sy-vline, 'Select the tables you wish to join', ' by clicking on the appropriate icons...', icon_system_help AS ICON HOTSPOT, b_hel COLOR COL_TOTAL INTENSIFIED HOTSPOT, icon_system_help AS ICON HOTSPOT, AT sy-linsz sy-vline. ULINE. TOP-OF-PAGE DURING LINE-SELECTION. IF flagpop IS INITIAL AND flagsel EQ 'X'. ULINE. WRITE: sy-vline, 'Select the fields you wish to use from the list below', AT sy-linsz sy-vline. WRITE: sy-vline, (53) t_done COLOR COL_TOTAL CENTERED, AT 31 icon_cancel COLOR COL_TOTAL AS ICON, AT sy-linsz sy-vline. ELSEIF cur_field EQ 'B_DIS' OR cur_field EQ 'ICON_DISPLAY'. FORMAT COLOR COL_HEADING INTENSIFIED. ULINE. WRITE: sy-vline, 'Join conditions', AT sy-linsz sy-vline. ULINE. CLEAR cur_field. ELSE. FORMAT COLOR COL_HEADING INTENSIFIED. ULINE. WRITE: sy-vline, 'Select the tables you wish to join', ' by clicking on the appropriate icons...', icon_system_help AS ICON HOTSPOT, b_hel COLOR COL_TOTAL INTENSIFIED HOTSPOT, icon_system_help AS ICON HOTSPOT, AT sy-linsz sy-vline. ULINE. ENDIF. *&--------------------------------------------------------------------* *& Form value_help *&--------------------------------------------------------------------* * *---------------------------------------------------------------------* FORM value_help. DATA: old_tab TYPE dd02l-tabname, result VALUE '1', text(150). old_tab = watab-tabname. IF LINES( jtables ) > 1. CONCATENATE 'All tables and joins will be deleted...' 'Are you sure you want to select a new base table?' INTO text SEPARATED BY space. CALL FUNCTION 'POPUP_TO_CONFIRM' EXPORTING titlebar = 'Warning...' text_question = text display_cancel_button = space IMPORTING answer = result. ENDIF. IF result = '1'. CALL FUNCTION 'F4_DD_TABLES' EXPORTING object = watab-tabname suppress_selection = 'X' IMPORTING RESULT = watab-tabname. IF watab-tabname NE old_tab. CLEAR: jtables[], it_joins[], it_av_fields[]. watab-tno = 1. APPEND watab TO jtables. PERFORM get_fields USING watab-tabname. ELSE. MESSAGE 'Base table not changed...' TYPE 'S'. ENDIF. ENDIF. ENDFORM. "value_help *&--------------------------------------------------------------------* *& Form list_tabs *&--------------------------------------------------------------------* * *---------------------------------------------------------------------* FORM list_tabs. LOOP AT jtables INTO watab. NEW-LINE. WRITE: sy-vline, (2) watab-tno, sy-vline, watab-tabname COLOR COL_NORMAL, sy-vline, 60 sy-vline, icon_reference_list AS ICON HOTSPOT, b_rel COLOR COL_TOTAL INTENSIFIED HOTSPOT, sy-vline, icon_display AS ICON HOTSPOT, b_dis COLOR COL_GROUP INTENSIFIED HOTSPOT, sy-vline, icon_delete AS ICON HOTSPOT, b_del COLOR COL_NEGATIVE HOTSPOT, AT sy-linsz sy-vline. IF sy-tabix = 1. WRITE: 40 b_sel COLOR COL_KEY HOTSPOT. WRITE: 58 icon_search AS ICON HOTSPOT. WRITE: 82(22) space. IF watab-tabname IS INITIAL. WRITE: 61(19) space. WRITE: 105(20) space. ENDIF. ENDIF. HIDE: watab-tabname, watab-tno, watab-parent. CLEAR watab. ENDLOOP. ULINE. READ TABLE jtables INTO watab INDEX 1. IF watab-tabname IS NOT INITIAL. WRITE:sy-vline, icon_terminology AS ICON HOTSPOT, b_fld COLOR COL_KEY INTENSIFIED HOTSPOT, AT sy-linsz sy-vline. ULINE. WRITE:sy-vline, icon_execute_object AS ICON HOTSPOT, b_exe COLOR COL_KEY INTENSIFIED HOTSPOT, AT sy-linsz sy-vline. ULINE. IF qtab IS NOT INITIAL. FORMAT COLOR COL_TOTAL INTENSIFIED. ULINE. WRITE:sy-vline, (128) 'SELECT statement generated successfully!' CENTERED, AT sy-linsz sy-vline. ULINE. WRITE:sy-vline, 50 icon_system_copy AS ICON HOTSPOT, b_cop HOTSPOT, AT sy-linsz sy-vline. ULINE. FORMAT COLOR COL_TOTAL INTENSIFIED OFF. LOOP AT qtab INTO qtext. WRITE:sy-vline, qtext, AT sy-linsz sy-vline. ENDLOOP. ULINE. FORMAT RESET. ENDIF. ENDIF. CLEAR watab. ENDFORM. "list_tabs *&--------------------------------------------------------------------* *& Form v_list_joins *&--------------------------------------------------------------------* * *---------------------------------------------------------------------* FORM v_list_joins. DATA: dd05m_out LIKE dd05m OCCURS 20 WITH HEADER LINE, dd08v_out LIKE dd08v OCCURS 10 WITH HEADER LINE, dd08v_ok LIKE dd08v OCCURS 10, dd08v_no LIKE dd08v OCCURS 10, dd08v_tab LIKE dd08v OCCURS 10 WITH HEADER LINE, basetabnames LIKE dd26v OCCURS 10 WITH HEADER LINE. DATA: BEGIN OF tab_joins OCCURS 10. INCLUDE STRUCTURE dd05m. DATA: mark(1), sele(1), nofs(1), END OF tab_joins. PERFORM get_basetab_info(radvimnt) TABLES tc1_tab base_tabs USING 0 ddxx CHANGING subrc. CLEAR basetabnames[]. LOOP AT tc1_tab INTO basetabnames WHERE mark = 'X'. APPEND basetabnames. ENDLOOP. ddxx-viewclass = 'D'. PERFORM get_all_frks(radvimnt) TABLES base_tabs basetabnames dd08v_out dd05m_out USING ddxx space. DESCRIBE TABLE dd08v_out LINES i. IF i = 0. READ TABLE basetabnames INDEX 1 TRANSPORTING tabname. IF sy-tfill = 1. MESSAGE s315(e2) WITH basetabnames-tabname. ELSE. MESSAGE s306(e2). ENDIF. ELSE. dd08v_ok[] = dd08v_out[]. CLEAR dd08v_no[]. PERFORM v_list_fk_head TABLES basetabnames dd08v_ok dd08v_no dd05m_out. ENDIF. ENDFORM. "v_list_joins *&--------------------------------------------------------------------* *& Form v_list_fk_head *&--------------------------------------------------------------------* * *---------------------------------------------------------------------* form v_list_fk_head TABLES basetabnames STRUCTURE dd26v dd08v_ok dd08v_no dd05m_out. DATA: tabnams LIKE dd02l-tabname OCCURS 10 WITH HEADER LINE, dd08v_tab LIKE dd08v OCCURS 10 WITH HEADER LINE. DATA: BEGIN OF tab_joins OCCURS 10. INCLUDE STRUCTURE dd08v. DATA: mark(1), sele(1), END OF tab_joins, ltab TYPE dd02l-tabname, old_tno TYPE i, wa_check LIKE watab, dup_tables LIKE RANGE OF watab-tabname, wa_dup LIKE LINE OF dup_tables. LOOP AT basetabnames. tabnams = basetabnames-tabname. APPEND tabnams. ENDLOOP. tab_joins[] = dd08v_ok[]. CALL FUNCTION 'DD_LIST_TAB_RELATIONS' EXPORTING viewclass = ddxx-viewclass TABLES tab_names = tabnams dd08v_ok = tab_joins dd08v_no = dd08v_no dd05m_tab = dd05m_out EXCEPTIONS not_executed = 1 OTHERS = 2. IF sy-subrc = 0. CLEAR: dd08v_tab[]. LOOP AT tab_joins WHERE mark = 'X' AND sele = ' '. dd08v_tab = tab_joins. APPEND dd08v_tab. ENDLOOP. IF sy-subrc = 0. PERFORM add_join_from_frk(radvimnt) TABLES base_tabs tc1_tab tc2_tab tc3_tab dd08v_tab USING ddxx CHANGING subrc. IF subrc = 4. MESSAGE s325(e2). ELSE. ltab = watab-tabname. old_tno = watab-tno. LOOP AT tc1_tab. IF sy-tabix NE 1. READ TABLE jtables INTO wa_check WITH KEY tabname = tc1_tab-tabname TRANSPORTING tabname. IF sy-subrc NE 0. watab-parent = old_tno. ADD 1 TO watab-tno. watab-tabname = tc1_tab-tabname. APPEND watab TO jtables. PERFORM get_fields USING watab-tabname. ELSEIF sy-subrc = 0. wa_dup-sign = 'I'. wa_dup-option = 'EQ'. wa_dup-low = wa_check-tabname. APPEND wa_dup TO dup_tables. ENDIF. ENDIF. ENDLOOP. LOOP AT tc2_tab. CHECK dup_tables IS INITIAL OR ( tc2_tab-ltab NOT IN dup_tables AND tc2_tab-ltab NOT IN dup_tables ). wa_joins-ltab = tc2_tab-ltab. wa_joins-rtab = tc2_tab-rtab. wa_joins-field1 = tc2_tab-lfield. wa_joins-field2 = tc2_tab-rfield. APPEND wa_joins TO it_joins. ENDLOOP. PERFORM reorg_tables. ENDIF. ENDIF. ENDIF. ENDFORM. "v_list_fk_h *&--------------------------------------------------------------------* *& Form tab_dupl *&--------------------------------------------------------------------* * *---------------------------------------------------------------------* FORM tab_dupl. DATA: checktab LIKE jtables, wa_check LIKE LINE OF checktab, wa_old LIKE wa_check, text(50). checktab = jtables. SORT checktab BY tabname. LOOP AT checktab INTO wa_check. IF wa_check-tabname IS NOT INITIAL AND wa_check-tabname = wa_old-tabname. CONCATENATE 'Table ' wa_old-tabname ' has already been added' INTO text SEPARATED BY space. MESSAGE text TYPE 'E'. ENDIF. wa_old = wa_check. ENDLOOP. ENDFORM. "tab_dupl *&--------------------------------------------------------------------* *& Form show_relationship *&--------------------------------------------------------------------* * *---------------------------------------------------------------------* FORM show_relationship. DATA: text(73), wapre LIKE watab. flagpop = 'X'. FORMAT COLOR COL_GROUP INTENSIFIED. NEW-PAGE. READ TABLE jtables INTO wapre WITH KEY tno = watab-parent. WINDOW STARTING AT 10 10 ENDING AT 100 15. LOOP AT it_joins INTO wa_joins WHERE ( rtab = watab-tabname AND ltab = wapre-tabname ) OR ( ltab = watab-tabname AND rtab = wapre-tabname ). ULINE (75). CONCATENATE wa_joins-ltab '-' wa_joins-field1 ` = ` wa_joins-rtab '-' wa_joins-field1 INTO text. CONDENSE text. WRITE:/ sy-vline, text, AT 75 sy-vline. ENDLOOP. ULINE (75). CLEAR flagpop. ENDFORM. "tab_dupl *&--------------------------------------------------------------------* *& Form del_table_and_joins *&--------------------------------------------------------------------* * *---------------------------------------------------------------------* * *---------------------------------------------------------------------* FORM del_table_and_joins USING p_tno TYPE i. DATA: wapre LIKE watab, wacurr LIKE watab, wachild LIKE watab. READ TABLE jtables INTO wacurr WITH KEY tno = p_tno. READ TABLE jtables INTO wapre WITH KEY tno = wacurr-parent. LOOP AT it_joins INTO wa_joins WHERE ( rtab = wacurr-tabname AND ltab = wapre-tabname ) OR ( ltab = wacurr-tabname AND rtab = wapre-tabname ). DELETE TABLE it_joins FROM wa_joins. ENDLOOP. LOOP AT jtables INTO wachild WHERE parent = wacurr-tno. PERFORM del_table_and_joins USING wachild-tno. ENDLOOP. DELETE it_av_fields WHERE tabname = wacurr-tabname. DELETE TABLE jtables FROM wacurr. ENDFORM. "del_table_and_joins *&--------------------------------------------------------------------* *& Form reorg_tables *&--------------------------------------------------------------------* * *---------------------------------------------------------------------* FORM reorg_tables. DATA: wa_curr LIKE LINE OF jtables. IF jtables IS INITIAL. wa_curr-tno = 1. APPEND wa_curr TO jtables. ELSE. LOOP AT jtables INTO wa_curr. wa_curr-tno = sy-tabix. MODIFY TABLE jtables FROM wa_curr. ENDLOOP. ENDIF. ENDFORM. "reorg_tables *&--------------------------------------------------------------------* *& Form confirm_delete *&--------------------------------------------------------------------* * *---------------------------------------------------------------------* FORM confirm_delete. DATA: text(150),result, wa_curr LIKE LINE OF jtables. READ TABLE jtables INTO wa_curr INDEX 1. IF wa_curr-tabname IS INITIAL. MESSAGE 'Nothing to delete...' TYPE 'E'. ELSE. CONCATENATE 'Do you wish to delete the table' watab-tabname ', its dependent tables and their join conditions?' INTO text SEPARATED BY space. CALL FUNCTION 'POPUP_TO_CONFIRM' EXPORTING titlebar = 'Warning...' text_question = text display_cancel_button = space IMPORTING answer = result. IF result = '2'. MESSAGE 'Delete action cancelled by user...' TYPE 'E'. ENDIF. ENDIF. ENDFORM. "confirm_delete *&--------------------------------------------------------------------* *& Form get_fields *&--------------------------------------------------------------------* * *---------------------------------------------------------------------* FORM get_fields USING ptabname TYPE dd02l-tabname. DATA: BEGIN OF wa_field, pos TYPE dd03l-position, fieldname TYPE dd03l-fieldname, text TYPE dd04t-scrtext_l, END OF wa_field, it_fields LIKE TABLE OF wa_field. SELECT dd03l~position dd03l~fieldname dd04t~scrtext_l INTO TABLE it_fields FROM dd03l INNER JOIN dd04t ON dd03l~rollname = dd04t~rollname WHERE dd03l~tabname = ptabname AND dd04t~ddlanguage = sy-langu AND dd03l~datatype NE 'CLNT' ORDER BY dd03l~position. wa_av_fields-tabname = ptabname. LOOP AT it_fields INTO wa_field. MOVE-CORRESPONDING wa_field TO wa_av_fields. APPEND wa_av_fields TO it_av_fields. ENDLOOP. ENDFORM. "get_fields *&--------------------------------------------------------------------* *& Form SELECT_FIELDS *&--------------------------------------------------------------------* * *---------------------------------------------------------------------* FORM select_fields. flagsel = 'X'. ULINE. WRITE: sy-vline, (30) 'Available Fields' CENTERED, (2) space, sy-vline, (25) 'Description' CENTERED, sy-vline, (2) space, (30) 'Selected Fields' CENTERED, sy-vline, (14) 'Alias' CENTERED, AT sy-linsz sy-vline. FORMAT COLOR COL_TOTAL. LOOP AT it_av_fields INTO wa_av_fields. AT NEW tabname. FORMAT COLOR COL_GROUP INTENSIFIED. ULInE. WRITE: sy-vline, (60) wa_av_fields-tabname, 34 icon_workflow_activity AS ICON HOTSPOT QUICKINFO 'Select All', AT sy-linsz sy-vline. HIDE wa_av_fields-tabname. ULINE. FORMAT COLOR COL_TOTAL. ENDAT. IF wa_av_fields-selected IS INITIAL. WRITE: sy-vline, (30) wa_av_fields-fieldname, icon_insert_row AS ICON HOTSPOT, sy-vline, (25) wa_av_fields-text, sy-vline, (2) space, (30) space COLOR COL_KEY, sy-vline, (14) wa_av_fields-alias , AT sy-linsz sy-vline. ELSEIF wa_av_fields-alias IS INITIAL. WRITE: sy-vline, (30) space, (2) space, sy-vline, (25) wa_av_fields-text, sy-vline, icon_delete_row AS ICON HOTSPOT, (30) wa_av_fields-fieldname COLOR COL_KEY, sy-vline, (14) space, AT sy-linsz sy-vline. ELSE. WRITE: sy-vline, (30) space, (2) space, sy-vline, (25) wa_av_fields-text, sy-vline, icon_delete_row AS ICON HOTSPOT, (30) wa_av_fields-fieldname COLOR COL_TOTAL INTENSIFIED, sy-vline, (14) wa_av_fields-alias COLOR COL_KEY, AT sy-linsz sy-vline. ENDIF. HIDE: wa_av_fields-tabname, wa_av_fields-fieldname. ENDLOOP. ULINE. CLEAR: flagsel, wa_av_fields. ENDFORM. "SELECT_FIELDS *&--------------------------------------------------------------------* *& Form CHECK_ALIAS *&--------------------------------------------------------------------* * *---------------------------------------------------------------------* * *---------------------------------------------------------------------* FORM check_alias CHANGING p_wa LIKE wa_av_fields. DATA: wa_check LIKE p_wa, text1(50), text2(50), text3(30), result, subrc LIKE sy-subrc. READ TABLE it_av_fields INTO wa_check WITH KEY fieldname = p_wa-fieldname alias = space selected = 'X'. IF sy-subrc = 0. CONCATENATE wa_check-tabname '-' p_wa-fieldname INTO text1. text2 = 'already exists. Please enter an'. text3 = 'alias for this field...'. CALL FUNCTION 'POPUP_TO_GET_ONE_VALUE' EXPORTING textline1 = text1 textline2 = text2 textline3 = text3 titel = 'Alias needed !' valuelength = 14 IMPORTING answer = result value1 = p_wa-alias. IF result = 'A'. MESSAGE 'Alias must be specified...' TYPE 'E' DISPLAY LIKE 'I'. ELSE. READ TABLE it_av_fields INTO wa_check WITH KEY alias = p_wa-alias selected = 'X'. READ TABLE it_av_fields INTO wa_check WITH KEY fieldname = p_wa-alias selected = 'X'. IF sy-subrc EQ 0 OR subrc EQ 0. DO. CLEAR p_wa-alias. CALL FUNCTION 'POPUP_TO_GET_ONE_VALUE' EXPORTING textline1 = 'The alias you specified' textline2 = 'already exists!' textline3 = 'Please enter a new alias...' titel = 'Alias needed !' valuelength = 14 IMPORTING answer = result value1 = p_wa-alias. IF result = 'A'. MESSAGE 'Alias must be specified...' TYPE 'E' DISPLAY LIKE 'I'. ELSE. READ TABLE it_av_fields INTO wa_check WITH KEY alias = p_wa-alias selected = 'X'. IF sy-subrc NE 0. READ TABLE it_av_fields INTO wa_check WITH KEY fieldname = p_wa-alias selected = 'X'. IF sy-subrc NE 0. EXIT. ENDIF. ENDIF. ENDIF. ENDDO. ENDIF. ENDIF. ENDIF. ENDFORM. "CHECK_A *&--------------------------------------------------------------------* *& Form gen_query *&--------------------------------------------------------------------* * *---------------------------------------------------------------------* FORM gen_query. DATA:fname TYPE string, it_av LIKE it_av_fields. CLEAR qtab[]. it_av = it_av_fields. DELETE it_av WHERE selected = space. IF LINES( jtables ) EQ 1 AND it_joins IS INITIAL. APPEND 'SELECT' TO qtab. LOOP AT it_av INTO wa_av_fields. AT NEW tabname. CONCATENATE '****Fields from' wa_av_fields-tabname INTO qtext SEPARATED BY space. APPEND qtext TO qtab. ENDAT. CONCATENATE ` ` wa_av_fields-fieldname INTO qtext. APPEND qtext TO qtab. ENDLOOP. APPEND '****Target' TO qtab. APPEND 'INTO [target] "replace with data object(s)' TO qtab. CONCATENATE 'FROM' wa_av_fields-tabname INTO qtext SEPARATED BY space. APPEND qtext TO qtab. ELSE. APPEND 'SELECT' TO qtab. LOOP AT it_av INTO wa_av_fields. AT NEW tabname. CONCATENATE '****Fields from' wa_av_fields-tabname INTO qtext SEPARATED BY space. APPEND qtext TO qtab. ENDAT. CONCATENATE ` ` wa_av_fields-tabname '~' wa_av_fields-fieldname INTO qtext. IF wa_av_fields-alias IS NOT INITIAL. CONCATENATE qtext 'AS' wa_av_fields-alias INTO qtext SEPARATED BY space. ENDIF. APPEND qtext TO qtab. ENDLOOP. APPEND '****Target' TO qtab. APPEND 'INTO [target] "replace with data object(s)' TO qtab. APPEND '****Inner joins' TO qtab. APPEND 'FROM' TO qtab. LOOP AT it_joins INTO wa_joins. AT NEW ltab. IF sy-tabix = 1. APPEND wa_joins-ltab TO qtab. ENDIF. ENDAT. AT NEW rtab. CONCATENATE 'INNER JOIN' wa_joins-rtab 'ON' INTO qtext SEPARATED BY space. APPEND qtext TO qtab. ENDAT. IF qtext(5) NE 'INNER'. CONCATENATE ` ` 'AND' INTO qtext. APPEND qtext TO qtab. ELSE. CONCATENATE wa_joins-rtab '-' wa_joins-field2 INTO fname. IF lcl_type=>get_type( fname ) = 'CLNT'. CONTINUE. ENDIF. ENDIF. CONCATENATE ` ` wa_joins-ltab '~' wa_joins-field1 ` = ` wa_joins-rtab '~' wa_joins-field2 INTO qtext. APPEND qtext TO qtab. ENDLOOP. ENDIF. ENDFORM. "gen_query *&--------------------------------------------------------------------* *& Form check_fields *&--------------------------------------------------------------------* * *---------------------------------------------------------------------* FORM check_fields. READ TABLE it_av_fields INTO wa_av_fields WITH KEY selected = 'X' TRANSPORTING NO FIELDS. IF sy-subrc NE 0. MESSAGE 'Select at least one field...' TYPE 'E' DISPLAY LIKE 'I'. ENDIF. ENDFORM. "check_fields *&--------------------------------------------------------------------* *& Form add_all_fields *&--------------------------------------------------------------------* * *---------------------------------------------------------------------* * *---------------------------------------------------------------------* FORM add_all_fields USING tname LIKE wa_av_fields-tabname. DATA wa_fields LIKE wa_av_fields. DATA: wa_check LIKE wa_fields, text1(50), text2(50), text3(30), result, subrc LIKE sy-subrc. LOOP AT it_av_fields INTO wa_fields WHERE tabname = tname AND selected IS INITIAL. READ TABLE it_av_fields INTO wa_check WITH KEY fieldname = wa_fields-fieldname alias = space selected = 'X'. IF sy-subrc = 0. CONCATENATE wa_fields-fieldname 'already exists.' INTO text1 SEPARATED BY space. text2 = 'Enter an alias. It can consist of'. text3 = 'only alphabets and digits...'. CALL FUNCTION 'POPUP_TO_GET_ONE_VALUE' EXPORTING textline1 = text1 textline2 = text2 textline3 = text3 titel = 'Alias needed !' valuelength = 14 IMPORTING answer = result value1 = wa_fields-alias. IF result = 'A'. MESSAGE 'Alias must be specified...' TYPE 'I'. CONTINUE. ELSE. READ TABLE it_av_fields INTO wa_check WITH KEY alias = wa_fields-alias selected = 'X'. subrc = sy-subrc. READ TABLE it_av_fields INTO wa_check WITH KEY fieldname = wa_fields-alias selected = 'X'. IF sy-subrc EQ 0 OR subrc EQ 0. DO. CLEAR wa_fields-alias. CALL FUNCTION 'POPUP_TO_GET_ONE_VALUE' EXPORTING textline1 = 'The alias you specified' textline2 = 'already exists!' textline3 = 'Please enter a new alias...' titel = 'Alias needed !' valuelength = 14 IMPORTING answer = result value1 = wa_fields-alias. IF result = 'A'. CALL FUNCTION 'POPUP_TO_CONFIRM' EXPORTING titlebar = 'Cancel Action?' text_question = 'Stop adding fields?' text_button_1 = 'Yes' text_button_2 = 'No' IMPORTING answer = result. IF result = 1. EXIT. ELSE. CONTINUE. ENDIF. ELSE. READ TABLE it_av_fields INTO wa_check WITH KEY alias = wa_fields-alias selected = 'X'. IF sy-subrc NE 0. READ TABLE it_av_fields INTO wa_check WITH KEY fieldname = wa_fields-alias selected = 'X'. IF sy-subrc NE 0. EXIT. ENDIF. ENDIF. ENDIF. ENDDO. IF result = '1'. CLEAR result. EXIT. ENDIF. ENDIF. ENDIF. ENDIF. wa_fields-selected = 'X'. MODIFY it_av_fields FROM wa_fields TRANSPORTING selected alias WHERE tabname = wa_fields-tabname AND fieldname = wa_fields-fieldname. ENDLOOP. ENDFORM. "check_fields *&--------------------------------------------------------------------* *& Form copy_to_clipboard *&--------------------------------------------------------------------* * *---------------------------------------------------------------------* FORM copy_to_clipboard. DATA: rc TYPE i. CALL METHOD cl_gui_frontend_services=>clipboard_export IMPORTING data = qtab CHANGING rc = rc. MESSAGE 'Query copied to clipboard!' TYPE 'I'. ENDFORM. "copy_to_clipboard *&---------------------------------------------------------------------* *& Form LOAD_HELP *&---------------------------------------------------------------------* * text *----------------------------------------------------------------------* FORM LOAD_HELP. CALL FUNCTION 'WS_EXECUTE' EXPORTING PROGRAM = '<a data-containerId="1212" data-containerType="37" data-objectId="44534" data-objectType="38" href=<a href="http://dustyplanet.com">http://dustyplanet.com</a>>Tool for ABAP Developers: Easy ABAP Open SQL Joins!</a>' EXCEPTIONS OTHERS = 0. ENDFORM. "LOAD_HELP |
How to use this tool
When you run this tool, you will be presented with the following dialog:
Click on “Select Base Table”
Use the standard table lookup(Personal Value List or Information System) to select your base table
Once you select your base table, the interface offers you options to add subsequent tables. I suggest you do this one table at a time…
Click on : 
As you keep adding tables, the tool composes the ON conditions based on the foreign key relationships between the chosen table and the previous one. You might want to review the join conditions to ensure everything is in line with your requirements…
Click on: 
And if you find something wrong in the process and you wish to delete a table and it’s join conditions, use the delete table function.
Click on: 
Just one more thing to do before we generate the query: Select the fields to be produced from the JOIN.
Click on: 
Click on Add(Button 2 below) to add a field and Add All(Button 1 below) to add all fields from a table.
Note: Deviation from standard: To confirm your field list click “Cancel”. Just don’t ask me why 😉
Now we’re almost done, it’s time to pop out a freshly baked SELECT statement:
Click on: 
You should see the output of the generator:
Copy query to the Windows Clipboard… 
Finally, just paste the code into your program!
In closing…
I thought it would be great if one could visualize the output of generated SELECTs, and then, I discovered this tool(Also appears on the SDN download page under WebAS. Look here). It was a pain getting it to work, but once I did, I figured that this is a tool that helps you quickly ALV’ize data output from a JOIN, but you require to type in the query yourself. But what surprised me was how easy it was to generate a query from ZJOINER, paste it into the visualizer tool, make a few changes and while your coffee is still hot, you have a well formed SELECT as well as a visual idea of the data it will produce, with almost no code effort from your side! Now if you consider that these two tools were not originally designed to work together, it is surprising how well they do! I call it inadvertent collaboration!
Anyway, I also think it would be interesting to take this further and do something like what ALVRobot does(also here!) But then, I’m sure if it proves useful, the community will take this further. I intend to post this in the code gallery as well, but I need to explore that area a bit more and learn a few more tricks, hopefully in the next couple of days…
Disclaimer: In the short time I spent testing this tool, I discovered quite a few bugs, which I spent some time solving… I am sure you will too, but I will not be able to spend a lot of time on this tool from now on, I would really appreciate it if somebody could also help fix issues as they are discovered. The program was meant to be a copy-paste solution and that shows in the design.
Also, sometimes, you will need to join tables that are NOT directly related through foreign keys(VBAK & VBAP, for example) and I’m afraid this tool will not help you with this 🙁 unless you do this in a roundabout way.
Credits:
Jayanta Narayan Choudhuri – SQL Tool for ABAP Developers
Gabriel Jenik – The ALV Robot
P.S. I love the WYSIWYG editor !!
