## include/query_instructions.h

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## FUNCTIONS

This source file includes following functions.

       1 #ifndef READ_QUERY_INSTRUCTIONS
       2 #define READ_QUERY_INSTRUCTIONS
       3
       4 /***************************************
       5   $Revision: 1.32 $
       6
       7   Query instruction module (qi)
       8   config module.
       9
      10   Status: NOT REVUED, NOT TESTED
      11
      12   ******************/ /******************
      13   Copyright (c) 1999,2000,2001,2002               RIPE NCC
      14
      15   All Rights Reserved
      16
      17   Permission to use, copy, modify, and distribute this software and its
      18   documentation for any purpose and without fee is hereby granted,
      19   provided that the above copyright notice appear in all copies and that
      20   both that copyright notice and this permission notice appear in
      21   supporting documentation, and that the name of the author not be
      22   used in advertising or publicity pertaining to distribution of the
      23   software without specific, written prior permission.
      24
      25   THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
      26   ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS; IN NO EVENT SHALL
      27   AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
      28   DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
      29   AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
      30   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
      31   ***************************************/
      32 #include "rxroutines.h"
      33 #include "iproutines.h"
      34 #include "mysql_driver.h"
      35 #include "query_command.h"
      36 #include "defs.h"
      37 #include "which_keytypes.h"
      38
      39 #include "access_control.h"
      40
      41
      42 #include "ca_configFns.h"
      43 #include "ca_dictionary.h"
      44 #include "ca_macros.h"
      45 #include "ca_srcAttribs.h"
      46
      47 /*
      48 --- snipped from http://www.tcx.se/Manual/manual.html ---
      49
      50 5.3 Functionality missing from MySQL
      51
      52 The following functionality is missing in the current version of MySQL. For a prioritized list indicating when new extensions may be added to MySQL, you should consult the
      53 online MySQL TODO list. That is the latest version of the TODO list in this manual. See section F List of things we want to add to MySQL in the future (The TODO).
      54
      55 5.3.1 Sub-selects
      56
      57 The following will not yet work in MySQL:
      58
      59 SELECT * FROM table1 WHERE id IN (SELECT id FROM table2);
      60 SELECT * FROM table1 WHERE id NOT IN (SELECT id FROM table2);
      61
      62 However, in many cases you can rewrite the query without a sub select:
      63
      64 SELECT table1.* FROM table1,table2 WHERE table1.id=table2.id;
      65 SELECT table1.* FROM table1 LEFT JOIN table2 ON table1.id=table2.id where table2.id IS NULL
      66
      67 For more complicated sub queries you can create temporary tables to hold the sub query.
      68
      69 MySQL only supports INSERT ... SELECT ... and REPLACE ... SELECT ... Independent sub-selects will be probably be available in 3.24.0. You can now use the function IN() in other
      70 contexts, however.
      71
      72 --- end snip ---
      73
      74 Ie. Try using a LEFT JOIN to do the "NOT IN"/ "MINUS" equivalent.
      75
      76 */
      77
      78 /*
      79   mysql optimizer is sometimes sub-optimal,
      80   therefore we force the join order with STRAIGHT_JOIN (MB, 2000/05/02)
      81
      82
      83 */
      84
      85 /* RIPE 6 */
      86 #define Q_OBJECTS     "SELECT last.object_id, last.sequence_id, last.object ,last.object_type FROM  %s IDS STRAIGHT_JOIN last,object_order WHERE last.object_id=IDS.id AND last.object_type != 100 AND last.object_type = object_order.object_type ORDER BY order_code"
      87
      88
      89
      90 #define Q_REC         "INSERT INTO %s SELECT pe_ro_id FROM %s IDS STRAIGHT_JOIN %s WHERE object_id = IDS.id"
      91
      92 #if 0
      93 #define Q_NO_OBJECTS  "SELECT object_id, sequence_id, object FROM last WHERE object_id = 0"
      94 #endif
      95
      96 #define MAX_INSTRUCTIONS 100
      97
      98
      99 typedef struct Query_instruction_t {
     100   R_Type_t search_type;
     101   int  queryindex;/* index into the Query table showing origin of this entry */
     102   char *query_str;
     103   char *rx_keys;
     104   unsigned int rx_srch_mode;
     105   int rx_par_a;
     106   ip_space_t space;
     107   rx_fam_t family;
     108 } Query_instruction;
     109
     110 typedef struct Query_instructions_t {
     111   Query_instruction *instruction[MAX_INSTRUCTIONS];
     112   unsigned int filtered;
     113   unsigned int fast;
     114   unsigned int recursive;
     115   const Query_command *qc; /* pointer to the Query_command structure of this query */
     116 } Query_instructions;
     117
     118
     119 er_ret_t QI_execute(ca_dbSource_t *dbhdl, Query_instructions *qis, Query_environ *qe, acc_st *acc_credit, acl_st *acl);
     120 void QI_free(Query_instructions *qis);
     121 Query_instructions *QI_new(const Query_command *qc, const Query_environ *qe);
     122 char *QI_queries_to_string(Query_instructions *qis);
     123 char *QI_fast_output(const char *str);
     124
     125 #endif /* READ_QUERY_INSTRUCTIONS */

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