]> granicus.if.org Git - postgresql/commitdiff
Here is a diff to info.c in interfaces/odbc that updates SQLForeignKeys to
authorBruce Momjian <bruce@momjian.us>
Sun, 10 Dec 2000 22:59:10 +0000 (22:59 +0000)
committerBruce Momjian <bruce@momjian.us>
Sun, 10 Dec 2000 22:59:10 +0000 (22:59 +0000)
return foreign key information based on the pg_trigger system table.  I
have tested the patch with (what I believe) is all possible
primary/foreign key combinations -- however I may have missed some, so if
anyone feels like taking the patch for a test drive, here are some useful
links:

Michael Fork

src/interfaces/odbc/info.c

index f796f8aae9b5610fb5e5acb00b1b9a8a453c9491..b176c57deb3c8631e00eb95c2223ed1482e2317b 100644 (file)
@@ -2252,11 +2252,15 @@ HSTMT htbl_stmt, hpkey_stmt;
 StatementClass *tbl_stmt;
 RETCODE result, keyresult;
 char tables_query[MAX_STATEMENT_LEN];
-char args[1024], tgname[MAX_INFO_STRING];
-char pktab[MAX_TABLE_LEN + 1], fktab[MAX_TABLE_LEN + 1];
-char *ptr, *pkey_ptr, *pkptr, *fkptr, *frel, *prel;
-int i, k, pkeys, seq, ntabs;
-SWORD nargs, rule_type, action;
+char trig_deferrable[2];
+char trig_initdeferred[2];
+char trig_args[1024];
+char upd_rule[MAX_NAME_LEN], del_rule[MAX_NAME_LEN];
+char pk_table_needed[MAX_TABLE_LEN + 1];
+char fk_table_needed[MAX_TABLE_LEN + 1];
+char *pkey_ptr, *fkey_ptr, *pk_table, *fk_table;
+int i, j, k, num_keys;
+SWORD trig_nargs, upd_rule_type, del_rule_type, defer_type;
 char pkey[MAX_INFO_STRING];
 Int2 result_cols;
 
@@ -2268,6 +2272,7 @@ Int2 result_cols;
                SC_log_error(func, "", NULL);
         return SQL_INVALID_HANDLE;
     }
+       
        stmt->manual_result = TRUE;
        stmt->errormsg_created = TRUE;
 
@@ -2301,6 +2306,9 @@ Int2 result_cols;
     QR_set_field_info(stmt->result, 11, "FK_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
     QR_set_field_info(stmt->result, 12, "PK_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
     QR_set_field_info(stmt->result, 13, "TRIGGER_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
+#if (ODBCVER >= 0x0300)
+       QR_set_field_info(stmt->result, 14, "DEFERRABILITY", PG_TYPE_INT2, 2);
+#endif /* ODBCVER >= 0x0300 */
 
     /* also, things need to think that this statement is finished so */
     /* the results can be retrieved. */
@@ -2322,25 +2330,46 @@ Int2 result_cols;
 
        tbl_stmt = (StatementClass *) htbl_stmt;
 
-       pktab[0] = '\0';
-       fktab[0] = '\0';
-
-       make_string(szPkTableName, cbPkTableName, pktab);
-       make_string(szFkTableName, cbFkTableName, fktab);
+       pk_table_needed[0] = '\0';
+       fk_table_needed[0] = '\0';
 
+       make_string(szPkTableName, cbPkTableName, pk_table_needed);
+       make_string(szFkTableName, cbFkTableName, fk_table_needed);
 
        /*      Case #2 -- Get the foreign keys in the specified table (fktab) that 
                refer to the primary keys of other table(s).
        */
-       if (fktab[0] != '\0') {
-
-               sprintf(tables_query, "select pg_trigger.tgargs, pg_trigger.tgnargs, pg_trigger.tgname"
-                               " from pg_proc, pg_trigger, pg_class"
-                               " where pg_proc.oid = pg_trigger.tgfoid and pg_trigger.tgrelid = pg_class.oid"
-                               " AND pg_proc.proname = 'check_primary_key' AND pg_class.relname = '%s'",
-                               fktab);
+       if (fk_table_needed[0] != '\0') {
+               mylog("%s: entering Foreign Key Case #2", func);
+               sprintf(tables_query, "SELECT   pt.tgargs, "
+                                                               "               pt.tgnargs, "
+                                                               "               pt.tgdeferrable, "
+                                                               "               pt.tginitdeferred, "
+                                                               "               pg_proc.proname, "
+                                                               "               pg_proc_1.proname "
+                                                               "FROM   pg_class pc, "
+                                                               "               pg_proc pg_proc, "
+                                                               "               pg_proc pg_proc_1, "
+                                                               "               pg_trigger pg_trigger, "
+                                                               "               pg_trigger pg_trigger_1, "
+                                                               "               pg_proc pp, "
+                                                               "               pg_trigger pt "
+                                                               "WHERE  pt.tgrelid = pc.oid "
+                                                               "AND pp.oid = pt.tgfoid "
+                                                               "AND pg_trigger.tgconstrrelid = pc.oid "
+                                                               "AND pg_proc.oid = pg_trigger.tgfoid "
+                                                               "AND pg_trigger_1.tgfoid = pg_proc_1.oid "
+                                                               "AND pg_trigger_1.tgconstrrelid = pc.oid "
+                                                               "AND ((pc.relname='%s') "
+                                                               "AND (pp.proname LIKE '%%ins') "
+                                                               "AND (pg_proc.proname LIKE '%%upd') "
+                                                               "AND (pg_proc_1.proname LIKE '%%del') "
+                                                               "AND (pg_trigger.tgrelid=pt.tgconstrrelid) "
+                                                               "AND (pg_trigger_1.tgrelid = pt.tgconstrrelid))", 
+                               fk_table_needed);               
 
                result = SQLExecDirect(htbl_stmt, tables_query, strlen(tables_query));
+
                if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                        stmt->errormsg = SC_create_errormsg(htbl_stmt);
                        stmt->errornumber = tbl_stmt->errornumber;
@@ -2350,7 +2379,7 @@ Int2 result_cols;
                }
 
                result = SQLBindCol(htbl_stmt, 1, SQL_C_BINARY,
-                                                       args, MAX_INFO_STRING, NULL);
+                                                       trig_args, sizeof(trig_args), NULL);
                if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                        stmt->errormsg = tbl_stmt->errormsg;
                        stmt->errornumber = tbl_stmt->errornumber;
@@ -2360,7 +2389,7 @@ Int2 result_cols;
                }
 
                result = SQLBindCol(htbl_stmt, 2, SQL_C_SHORT,
-                                                       &nargs, 0, NULL);
+                                                       &trig_nargs, 0, NULL);
                if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                        stmt->errormsg = tbl_stmt->errormsg;
                        stmt->errornumber = tbl_stmt->errornumber;
@@ -2370,7 +2399,37 @@ Int2 result_cols;
                }
 
                result = SQLBindCol(htbl_stmt, 3, SQL_C_CHAR,
-                                                       tgname, sizeof(tgname), NULL);
+                                                       trig_deferrable, sizeof(trig_deferrable), NULL);
+               if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
+                       stmt->errormsg = tbl_stmt->errormsg;
+                       stmt->errornumber = tbl_stmt->errornumber;
+                       SC_log_error(func, "", stmt);
+                       SQLFreeStmt(htbl_stmt, SQL_DROP);
+                       return SQL_ERROR;
+               }
+
+               result = SQLBindCol(htbl_stmt, 4, SQL_C_CHAR,
+                                                       trig_initdeferred, sizeof(trig_initdeferred), NULL);
+               if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
+                       stmt->errormsg = tbl_stmt->errormsg;
+                       stmt->errornumber = tbl_stmt->errornumber;
+                       SC_log_error(func, "", stmt);
+                       SQLFreeStmt(htbl_stmt, SQL_DROP);
+                       return SQL_ERROR;
+               }
+
+               result = SQLBindCol(htbl_stmt, 5, SQL_C_CHAR,
+                                                       upd_rule, sizeof(upd_rule), NULL);
+               if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
+                       stmt->errormsg = tbl_stmt->errormsg;
+                       stmt->errornumber = tbl_stmt->errornumber;
+                       SC_log_error(func, "", stmt);
+                       SQLFreeStmt(htbl_stmt, SQL_DROP);
+                       return SQL_ERROR;
+               }
+
+               result = SQLBindCol(htbl_stmt, 6, SQL_C_CHAR,
+                                                       del_rule, sizeof(del_rule), NULL);
                if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                        stmt->errormsg = tbl_stmt->errormsg;
                        stmt->errornumber = tbl_stmt->errornumber;
@@ -2412,31 +2471,27 @@ Int2 result_cols;
                while (result == SQL_SUCCESS) {
 
                        /*      Compute the number of keyparts. */
-                       pkeys = nargs / 2;
+                       num_keys = (trig_nargs - 4) / 2;
 
-                       mylog("Foreign Key Case#2: nargs = %d, pkeys = %d\n", nargs, pkeys);
+                       mylog("Foreign Key Case#2: trig_nargs = %d, num_keys = %d\n", trig_nargs, num_keys);
 
-                       ptr = args;
+                       pk_table = trig_args;
 
                        /*      Get to the PK Table Name */
-                       for (k = 0; k < pkeys; k++)
-                               ptr += strlen(ptr) + 1;
-
-                       prel = ptr;
-
-                       mylog("prel = '%s'\n", prel);
+                       for (k = 0; k < 2; k++)
+                               pk_table += strlen(pk_table) + 1;
 
                        /*      If there is a pk table specified, then check it. */
-                       if (pktab[0] != '\0') {
+                       if (pk_table_needed[0] != '\0') {
 
                                /*      If it doesn't match, then continue */
-                               if ( strcmp(prel, pktab)) {     
+                               if ( strcmp(pk_table, pk_table_needed)) {       
                                        result = SQLFetch(htbl_stmt);
                                        continue;
                                }
                        }
 
-                       keyresult = SQLPrimaryKeys(hpkey_stmt, NULL, 0, NULL, 0, prel, SQL_NTS);
+                       keyresult = SQLPrimaryKeys(hpkey_stmt, NULL, 0, NULL, 0, pk_table, SQL_NTS);
                        if (keyresult != SQL_SUCCESS) {
                                stmt->errornumber = STMT_NO_MEMORY_ERROR;
                                stmt->errormsg = "Couldn't get primary keys for SQLForeignKeys result.";
@@ -2448,76 +2503,147 @@ Int2 result_cols;
 
                        /*      Check that the key listed is the primary key */
                        keyresult = SQLFetch(hpkey_stmt);
-                       for (k = 0; k < pkeys; k++) {
 
-                               ptr += strlen(ptr) + 1;
-                               if ( keyresult != SQL_SUCCESS || strcmp(ptr, pkey)) {
-                                       pkeys = 0;
+                       /*      Get to first primary key */
+                       pkey_ptr = trig_args;
+                       for (i = 0; i < 5; i++)
+                               pkey_ptr += strlen(pkey_ptr) + 1;
+
+                       for (k = 0; k < num_keys; k++) {
+                               mylog("%s: pkey_ptr='%s', pkey='%s'\n", func, pkey_ptr, pkey);
+                               if ( keyresult != SQL_SUCCESS || strcmp(pkey_ptr, pkey)) {
+                                       num_keys = 0;
                                        break;
                                }
+
+                               /*      Get to next primary key */
+                               for (k = 0; k < 2; k++)
+                                       pkey_ptr += strlen(pkey_ptr) + 1;
+
                                keyresult = SQLFetch(hpkey_stmt);
                        }
-                       ptr = prel;
 
+                       /*      Set to first fk column */
+                       fkey_ptr = trig_args;
+                       for (k = 0; k < 4; k++)
+                               fkey_ptr += strlen(fkey_ptr) + 1;
+
+                       /* Set update and delete actions for foreign keys */
+                       if (!strcmp(upd_rule, "RI_FKey_cascade_upd")) {
+                               upd_rule_type = SQL_CASCADE;
+                       } else if (!strcmp(upd_rule, "RI_FKey_noaction_upd")) {
+                               upd_rule_type = SQL_NO_ACTION;
+                       } else if (!strcmp(upd_rule, "RI_FKey_restrict_upd")) {
+                               upd_rule_type = SQL_NO_ACTION;
+                       } else if (!strcmp(upd_rule, "RI_FKey_setdefault_upd")) {
+                               upd_rule_type = SQL_SET_DEFAULT;
+                       } else if (!strcmp(upd_rule, "RI_FKey_setnull_upd")) {
+                               upd_rule_type = SQL_SET_NULL;
+                       }
+                       
+                       if (!strcmp(upd_rule, "RI_FKey_cascade_del")) {
+                               del_rule_type = SQL_CASCADE;
+                       } else if (!strcmp(upd_rule, "RI_FKey_noaction_del")) {
+                               del_rule_type = SQL_NO_ACTION;
+                       } else if (!strcmp(upd_rule, "RI_FKey_restrict_del")) {
+                               del_rule_type = SQL_NO_ACTION;
+                       } else if (!strcmp(upd_rule, "RI_FKey_setdefault_del")) {
+                               del_rule_type = SQL_SET_DEFAULT;
+                       } else if (!strcmp(upd_rule, "RI_FKey_setnull_del")) {
+                               del_rule_type = SQL_SET_NULL;
+                       }
 
+#if (ODBCVER >= 0x0300)
+                       /* Set deferrability type */
+                       if (!strcmp(trig_initdeferred, "y")) {
+                               defer_type = SQL_INITIALLY_DEFERRED;
+                       } else if (!strcmp(trig_deferrable, "y")) {
+                               defer_type = SQL_INITIALLY_IMMEDIATE;
+                       } else {
+                               defer_type = SQL_NOT_DEFERRABLE;
+                       }
+#endif /* ODBCVER >= 0x0300 */
 
-                       /*      Set to first fk column */
-                       fkptr = args;
-                       seq = 0;
+                       /*      Get to first primary key */
+                       pkey_ptr = trig_args;
+                       for (i = 0; i < 5; i++)
+                               pkey_ptr += strlen(pkey_ptr) + 1;
 
-                       for (k = 0; k < pkeys; k++) {
+                       for (k = 0; k < num_keys; k++) {
 
                                row = (TupleNode *)malloc(sizeof(TupleNode) + (result_cols - 1) * sizeof(TupleField));
 
+                               mylog("%s: pk_table = '%s', pkey_ptr = '%s'\n", func, pk_table, pkey_ptr);
                                set_tuplefield_null(&row->tuple[0]);
                                set_tuplefield_string(&row->tuple[1], "");
+                               set_tuplefield_string(&row->tuple[2], pk_table);
+                               set_tuplefield_string(&row->tuple[3], pkey_ptr);
 
-                               set_tuplefield_string(&row->tuple[2], prel);
-
-                               /*      Get to the primary key */
-                               ptr += strlen(ptr) + 1;
-
-                               mylog("prel = '%s', ptr = '%s'\n", prel, ptr);
-
-                               set_tuplefield_string(&row->tuple[3], ptr);
+                               mylog("%s: fk_table_needed = '%s', fkey_ptr = '%s'\n", func, fk_table_needed, fkey_ptr);
                                set_tuplefield_null(&row->tuple[4]);
                                set_tuplefield_string(&row->tuple[5], "");
+                               set_tuplefield_string(&row->tuple[6], fk_table_needed);
+                               set_tuplefield_string(&row->tuple[7], fkey_ptr);
 
-                               set_tuplefield_string(&row->tuple[6], fktab);
-                               set_tuplefield_string(&row->tuple[7], fkptr);
-
-                               mylog("fktab = '%s', fkptr = '%s'\n", fktab, fkptr);
-
-                               set_tuplefield_int2(&row->tuple[8], (Int2) (++seq));
-                               set_tuplefield_null(&row->tuple[9]);
-                               set_tuplefield_null(&row->tuple[10]);
+                               mylog("%s: upd_rule_type = '%i', del_rule_type = '%i'\n, trig_name = '%s'", func, upd_rule_type, del_rule_type, trig_args);
+                               set_tuplefield_int2(&row->tuple[8], (Int2) (k + 1));
+                               set_tuplefield_int2(&row->tuple[9], (Int2) upd_rule_type);
+                               set_tuplefield_int2(&row->tuple[10], (Int2) del_rule_type);
                                set_tuplefield_null(&row->tuple[11]);
                                set_tuplefield_null(&row->tuple[12]);
-
-                               set_tuplefield_string(&row->tuple[13], tgname);
+                               set_tuplefield_string(&row->tuple[13], trig_args);
+#if (ODBCVER >= 0x0300)
+                               set_tuplefield_int2(&row->tuple[14], defer_type);
+#endif /* ODBCVER >= 0x0300 */
 
                                QR_add_tuple(stmt->result, row);
 
-                               /*      next foreign key */
-                               fkptr += strlen(fkptr) + 1;
-
+                               /* next primary/foreign key */
+                               for (i = 0; i < 2; i++) {
+                                       fkey_ptr += strlen(fkey_ptr) + 1;
+                                       pkey_ptr += strlen(pkey_ptr) + 1;
+                               }
                        }
 
                        result = SQLFetch(htbl_stmt);
                }
+               SQLFreeStmt(hpkey_stmt, SQL_DROP);
        }
 
        /*      Case #1 -- Get the foreign keys in other tables that refer to the primary key
                in the specified table (pktab).  i.e., Who points to me?
        */
-    else if (pktab[0] != '\0') {
-
-               sprintf(tables_query, "select pg_trigger.tgargs, pg_trigger.tgnargs"
-                               ", pg_trigger.tgtype, pg_trigger.tgname"
-                               " from pg_proc, pg_trigger, pg_class"
-                               " where pg_proc.oid = pg_trigger.tgfoid and pg_trigger.tgrelid = pg_class.oid"
-                               " AND pg_proc.proname = 'check_foreign_key' AND pg_class.relname = '%s'",
-                               pktab);
+    else if (pk_table_needed[0] != '\0') {
+
+               sprintf(tables_query, "SELECT   pg_trigger.tgargs, "
+                                                               "               pg_trigger.tgnargs, "
+                                                               "               pg_trigger.tgdeferrable, "
+                                                               "               pg_trigger.tginitdeferred, "
+                                                               "               pg_proc.proname, "
+                                                               "               pg_proc_1.proname "
+                                                               "FROM   pg_class pg_class, "
+                                                               "               pg_class pg_class_1, "
+                                                               "               pg_class pg_class_2, "
+                                                               "               pg_proc pg_proc, "
+                                                               "               pg_proc pg_proc_1, "
+                                                               "               pg_trigger pg_trigger, "
+                                                               "               pg_trigger pg_trigger_1, "
+                                                               "               pg_trigger pg_trigger_2 "
+                                                               "WHERE  pg_trigger.tgconstrrelid = pg_class.oid "
+                                                               "       AND pg_trigger.tgrelid = pg_class_1.oid "
+                                                               "       AND pg_trigger_1.tgfoid = pg_proc_1.oid "
+                                                               "       AND pg_trigger_1.tgconstrrelid = pg_class_1.oid "
+                                                               "       AND pg_trigger_2.tgconstrrelid = pg_class_2.oid "
+                                                               "       AND pg_trigger_2.tgfoid = pg_proc.oid "
+                                                               "       AND pg_class_2.oid = pg_trigger.tgrelid "
+                                                               "       AND ("
+                                                               "                (pg_class.relname='%s') "
+                                                               "       AND  (pg_proc.proname Like '%%upd') "
+                                                               "       AND  (pg_proc_1.proname Like '%%del')"
+                                                               "       AND      (pg_trigger_1.tgrelid = pg_trigger.tgconstrrelid) "
+                                                               "       AND      (pg_trigger_2.tgrelid = pg_trigger.tgconstrrelid) "
+                                                               "               )",
+                               pk_table_needed);
 
                result = SQLExecDirect(htbl_stmt, tables_query, strlen(tables_query));
                if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
@@ -2529,7 +2655,7 @@ Int2 result_cols;
                }
 
                result = SQLBindCol(htbl_stmt, 1, SQL_C_BINARY,
-                                                       args, sizeof(args), NULL);
+                                                       trig_args, sizeof(trig_args), NULL);
                if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                        stmt->errormsg = tbl_stmt->errormsg;
                        stmt->errornumber = tbl_stmt->errornumber;
@@ -2539,7 +2665,7 @@ Int2 result_cols;
                }
 
                result = SQLBindCol(htbl_stmt, 2, SQL_C_SHORT,
-                                                       &nargs, 0, NULL);
+                                                       &trig_nargs, 0, NULL);
                if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                        stmt->errormsg = tbl_stmt->errormsg;
                        stmt->errornumber = tbl_stmt->errornumber;
@@ -2548,8 +2674,8 @@ Int2 result_cols;
                        return SQL_ERROR;
                }
 
-               result = SQLBindCol(htbl_stmt, 3, SQL_C_SHORT,
-                                                       &rule_type, 0, NULL);
+               result = SQLBindCol(htbl_stmt, 3, SQL_C_CHAR,
+                                                       trig_deferrable, sizeof(trig_deferrable), NULL);
                if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                        stmt->errormsg = tbl_stmt->errormsg;
                        stmt->errornumber = tbl_stmt->errornumber;
@@ -2559,7 +2685,7 @@ Int2 result_cols;
                }
 
                result = SQLBindCol(htbl_stmt, 4, SQL_C_CHAR,
-                                                       tgname, sizeof(tgname), NULL);
+                                                       trig_initdeferred, sizeof(trig_initdeferred), NULL);
                if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                        stmt->errormsg = tbl_stmt->errormsg;
                        stmt->errornumber = tbl_stmt->errornumber;
@@ -2568,147 +2694,137 @@ Int2 result_cols;
                        return SQL_ERROR;
                }
 
-               result = SQLFetch(htbl_stmt);
-               if (result == SQL_NO_DATA_FOUND)
-                       return SQL_SUCCESS;
-
-               if(result != SQL_SUCCESS) {
-                       stmt->errormsg = SC_create_errormsg(htbl_stmt);
+               result = SQLBindCol(htbl_stmt, 5, SQL_C_CHAR,\r
+                                                       upd_rule, sizeof(upd_rule), NULL);\r
+               if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {\r
+                       stmt->errormsg = tbl_stmt->errormsg;\r
                        stmt->errornumber = tbl_stmt->errornumber;
                        SC_log_error(func, "", stmt);
                        SQLFreeStmt(htbl_stmt, SQL_DROP);
                        return SQL_ERROR;
                }
 
-               keyresult = SQLAllocStmt( stmt->hdbc, &hpkey_stmt);
-               if((keyresult != SQL_SUCCESS) && (keyresult != SQL_SUCCESS_WITH_INFO)) {
-                       stmt->errornumber = STMT_NO_MEMORY_ERROR;
-                       stmt->errormsg = "Couldn't allocate statement for SQLForeignKeys (pkeys) result.";
+               result = SQLBindCol(htbl_stmt, 6, SQL_C_CHAR,\r
+                                                       del_rule, sizeof(del_rule), NULL);\r
+               if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {\r
+                       stmt->errormsg = tbl_stmt->errormsg;\r
+                       stmt->errornumber = tbl_stmt->errornumber;\r
                        SC_log_error(func, "", stmt);
+                       SQLFreeStmt(htbl_stmt, SQL_DROP);\r
                        return SQL_ERROR;
                }
 
-               keyresult = SQLPrimaryKeys(hpkey_stmt, NULL, 0, NULL, 0, pktab, SQL_NTS);
-               if (keyresult != SQL_SUCCESS) {
-                       stmt->errornumber = STMT_NO_MEMORY_ERROR;
-                       stmt->errormsg = "Couldn't get primary keys for SQLForeignKeys result.";
-                       SC_log_error(func, "", stmt);
-                       SQLFreeStmt(hpkey_stmt, SQL_DROP);
-                       return SQL_ERROR;
-               }
+               result = SQLFetch(htbl_stmt);\r
+               if (result == SQL_NO_DATA_FOUND)\r
+                       return SQL_SUCCESS;\r
 
-               keyresult = SQLBindCol(hpkey_stmt, 4, SQL_C_CHAR,
-                                                               pkey, sizeof(pkey), NULL);
-               if (keyresult != SQL_SUCCESS) {
-                       stmt->errornumber = STMT_NO_MEMORY_ERROR;
-                       stmt->errormsg = "Couldn't bindcol for primary keys for SQLForeignKeys result.";
+               if(result != SQL_SUCCESS) {\r
+                       stmt->errormsg = SC_create_errormsg(htbl_stmt);\r
+                       stmt->errornumber = tbl_stmt->errornumber;\r
                        SC_log_error(func, "", stmt);
-                       SQLFreeStmt(hpkey_stmt, SQL_DROP);
+                       SQLFreeStmt(htbl_stmt, SQL_DROP);\r
                        return SQL_ERROR;
                }
 
                while (result == SQL_SUCCESS) {
-                 /*    Get the number of tables */
-                       ptr = args;
-                       ntabs = atoi(args);
-                       ptr += strlen(ptr) + 1;
-
-
-                       /*      Handle action (i.e., 'cascade', 'restrict', 'setnull') */
-                       switch(tolower((unsigned char) ptr[0])) {
-                       case 'c':       
-                               action = SQL_CASCADE;
-                               break;
-                       case 'r':
-                               action = SQL_RESTRICT;
-                               break;
-                       case 's':
-                               action = SQL_SET_NULL;
-                               break;
-                       default:
-                               action = -1;
-                               break;
-                       }
-
-                       rule_type >>= TRIGGER_SHIFT;
-                       ptr += strlen(ptr) + 1;
 
                        /*      Calculate the number of key parts */
-                       pkeys = (nargs - ( 2 + ntabs)) / (ntabs + 1);
-                       pkey_ptr = ptr;
-
-
-                       keyresult = SQLExtendedFetch(hpkey_stmt, SQL_FETCH_FIRST, -1, NULL, NULL);
-                       if ( keyresult != SQL_SUCCESS || strcmp(pkey, ptr)) {
-                               ntabs = 0;
-                       }
-
-                       /*      Get to the last primary keypart */
-                       for (i = 1; i < pkeys; i++) {
-
-                               /*      If keypart doesnt match, skip this entry */
-                               if ( keyresult != SQL_SUCCESS || strcmp(pkey, ptr)) {
-                                       ntabs = 0;
-                                       break;
-                               }
-                               ptr += strlen(ptr) + 1;
-
-                               keyresult = SQLExtendedFetch(hpkey_stmt, SQL_FETCH_NEXT, -1, NULL, NULL);
-                       }
-                               
-                       mylog("Foreign Key Case#1: nargs = %d, ntabs = %d, pkeys = %d\n", nargs, ntabs, pkeys);
+                       num_keys = (trig_nargs - 4) / 2;;\r
 
-
-                       /*      Get Foreign Key Tables */
-                       for (i = 0; i < ntabs; i++) {
-
-                               seq = 0;
-                               pkptr = pkey_ptr;
-
-                               ptr += strlen(ptr) + 1;
-                               frel = ptr;
-
-                               for (k = 0; k < pkeys; k++) {
+                       /*      Handle action (i.e., 'cascade', 'restrict', 'setnull') */
+                       if (!strcmp(upd_rule, "RI_FKey_cascade_upd")) {\r
+                               upd_rule_type = SQL_CASCADE;\r
+                       } else if (!strcmp(upd_rule, "RI_FKey_noaction_upd")) {\r
+                               upd_rule_type = SQL_NO_ACTION;\r
+                       } else if (!strcmp(upd_rule, "RI_FKey_restrict_upd")) {\r
+                               upd_rule_type = SQL_NO_ACTION;\r
+                       } else if (!strcmp(upd_rule, "RI_FKey_setdefault_upd")) {\r
+                               upd_rule_type = SQL_SET_DEFAULT;\r
+                       } else if (!strcmp(upd_rule, "RI_FKey_setnull_upd")) {\r
+                               upd_rule_type = SQL_SET_NULL;\r
+                       }\r
+                       \r
+                       if (!strcmp(upd_rule, "RI_FKey_cascade_del")) {\r
+                               del_rule_type = SQL_CASCADE;\r
+                       } else if (!strcmp(upd_rule, "RI_FKey_noaction_del")) {\r
+                               del_rule_type = SQL_NO_ACTION;\r
+                       } else if (!strcmp(upd_rule, "RI_FKey_restrict_del")) {\r
+                               del_rule_type = SQL_NO_ACTION;\r
+                       } else if (!strcmp(upd_rule, "RI_FKey_setdefault_del")) {\r
+                               del_rule_type = SQL_SET_DEFAULT;\r
+                       } else if (!strcmp(upd_rule, "RI_FKey_setnull_del")) {\r
+                               del_rule_type = SQL_SET_NULL;\r
+                       }                       \r
+\r
+#if (ODBCVER >= 0x0300)\r
+                       /* Set deferrability type */\r
+                       if (!strcmp(trig_initdeferred, "y")) {\r
+                               defer_type = SQL_INITIALLY_DEFERRED;\r
+                       } else if (!strcmp(trig_deferrable, "y")) {\r
+                               defer_type = SQL_INITIALLY_IMMEDIATE;\r
+                       } else {\r
+                               defer_type = SQL_NOT_DEFERRABLE;\r
+                       }\r
+#endif /* ODBCVER >= 0x0300 */\r
+\r
+                       mylog("Foreign Key Case#1: trig_nargs = %d, num_keys = %d\n", trig_nargs, num_keys);\r
+\r
+                       /*      Get to first primary key */\r
+                       pkey_ptr = trig_args;\r
+                       for (i = 0; i < 5; i++)\r
+                               pkey_ptr += strlen(pkey_ptr) + 1;\r
+\r
+\r
+                       /*      Get to first foreign table */\r
+                       fk_table = trig_args;\r
+                       fk_table += strlen(fk_table) + 1;\r
+\r
+                       /* Get to first foreign key */\r
+                       fkey_ptr = trig_args;\r
+                       for (k = 0; k < 4; k++) \r
+                               fkey_ptr += strlen(fkey_ptr) + 1;\r
+
+                       for (k = 0; k < num_keys; k++) {\r
+
+                               mylog("pkey_ptr = '%s', fk_table = '%s', fkey_ptr = '%s'\n", pkey_ptr, fk_table, fkey_ptr);\r
 
                                        row = (TupleNode *)malloc(sizeof(TupleNode) + (result_cols - 1) * sizeof(TupleField));
 
+                               mylog("pk_table_needed = '%s', pkey_ptr = '%s'\n", pk_table_needed, pkey_ptr);\r
                                        set_tuplefield_null(&row->tuple[0]);
                                        set_tuplefield_string(&row->tuple[1], "");
+                               set_tuplefield_string(&row->tuple[2], pk_table_needed);\r
+                               set_tuplefield_string(&row->tuple[3], pkey_ptr);\r
 
-                                       set_tuplefield_string(&row->tuple[2], pktab);
-                                       set_tuplefield_string(&row->tuple[3], pkptr);
-
-                                       mylog("pktab = '%s', pkptr = '%s'\n", pktab, pkptr);
-
+                               mylog("fk_table = '%s', fkey_ptr = '%s'\n", fk_table, fkey_ptr);\r
                                        set_tuplefield_null(&row->tuple[4]);
                                        set_tuplefield_string(&row->tuple[5], "");
-                                       set_tuplefield_string(&row->tuple[6], frel);
-
-                                       /*      Get to the foreign key */
-                                       ptr += strlen(ptr) + 1;
-
-                                       set_tuplefield_string(&row->tuple[7], ptr);
+                               set_tuplefield_string(&row->tuple[6], fk_table);
+                               set_tuplefield_string(&row->tuple[7], fkey_ptr);\r
 
-                                       mylog("frel = '%s', ptr = '%s'\n", frel, ptr);
-                                       mylog("rule_type = %d, action = %d\n", rule_type, action);
+                               set_tuplefield_int2(&row->tuple[8], (Int2) (k + 1));\r
 
-                                       set_tuplefield_int2(&row->tuple[8], (Int2) (++seq));
-
-                                       set_nullfield_int2(&row->tuple[9], (Int2) ((rule_type & TRIGGER_UPDATE) ? action : -1));
-                                       set_nullfield_int2(&row->tuple[10], (Int2) ((rule_type & TRIGGER_DELETE) ? action : -1));
+                               mylog("upd_rule = %d, del_rule= %d", upd_rule_type, del_rule_type);\r
+                               set_nullfield_int2(&row->tuple[9], (Int2) upd_rule_type);\r
+                               set_nullfield_int2(&row->tuple[10], (Int2) del_rule_type);\r
 
                                        set_tuplefield_null(&row->tuple[11]);
                                        set_tuplefield_null(&row->tuple[12]);
 
-                                       set_tuplefield_string(&row->tuple[13], tgname);
+                               set_tuplefield_string(&row->tuple[13], trig_args);\r
 
-                                       QR_add_tuple(stmt->result, row);
+#if (ODBCVER >= 0x0300)\r
+                               mylog("defer_type = '%s', defer_type);\r
+                               set_tuplefield_int2(&row->tuple[14], defer_type);\r
+#endif /* ODBCVER >= 0x0300 */\r
 
-                                       /*      next primary key */
-                                       pkptr += strlen(pkptr) + 1;
+                               QR_add_tuple(stmt->result, row);
 
+                               /*      next primary/foreign key */
+                               for (j = 0; j < 2; j++) {\r
+                                       pkey_ptr += strlen(pkey_ptr) + 1;\r
+                                       fkey_ptr += strlen(fkey_ptr) + 1;\r
                                }
-
                        }
 
                        result = SQLFetch(htbl_stmt);
@@ -2723,7 +2839,6 @@ Int2 result_cols;
        }
 
        SQLFreeStmt(htbl_stmt, SQL_DROP);
-       SQLFreeStmt(hpkey_stmt, SQL_DROP);
 
        mylog("SQLForeignKeys(): EXIT, stmt=%u\n", stmt);
     return SQL_SUCCESS;