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 */