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Viewing changes to drizzled/sql_parse.cc

  • Committer: Brian Aker
  • Date: 2010-11-12 21:22:46 UTC
  • mto: (1932.2.1 trunk)
  • mto: This revision was merged to the branch mainline in revision 1930.
  • Revision ID: brian@tangent.org-20101112212246-jsn2vgxzgesuv9pt
Test for issues on CONCURRENT to be sure it operates in a single
transaction.

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drizzled/sql_parse.cc
13
13
   along with this program; if not, write to the Free Software
14
14
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA */
15
15
 
16
 
#include <config.h>
 
16
#include "config.h"
17
17
 
18
18
#define DRIZZLE_LEX 1
19
19
 
20
 
#include <drizzled/item/num.h>
21
 
#include <drizzled/abort_exception.h>
22
20
#include <drizzled/my_hash.h>
23
21
#include <drizzled/error.h>
24
22
#include <drizzled/nested_join.h>
25
23
#include <drizzled/query_id.h>
26
 
#include <drizzled/transaction_services.h>
 
24
#include "drizzled/transaction_services.h"
27
25
#include <drizzled/sql_parse.h>
28
26
#include <drizzled/data_home.h>
29
27
#include <drizzled/sql_base.h>
30
28
#include <drizzled/show.h>
 
29
#include <drizzled/db.h>
31
30
#include <drizzled/function/time/unix_timestamp.h>
32
31
#include <drizzled/function/get_system_var.h>
33
32
#include <drizzled/item/cmpfunc.h>
34
33
#include <drizzled/item/null.h>
35
34
#include <drizzled/session.h>
36
 
#include <drizzled/session/cache.h>
37
35
#include <drizzled/sql_load.h>
38
36
#include <drizzled/lock.h>
39
37
#include <drizzled/select_send.h>
40
38
#include <drizzled/plugin/client.h>
41
39
#include <drizzled/statement.h>
42
40
#include <drizzled/statement/alter_table.h>
43
 
#include <drizzled/probes.h>
44
 
#include <drizzled/global_charset_info.h>
45
 
 
46
 
#include <drizzled/plugin/logging.h>
47
 
#include <drizzled/plugin/query_rewrite.h>
48
 
#include <drizzled/plugin/query_cache.h>
49
 
#include <drizzled/plugin/authorization.h>
50
 
#include <drizzled/optimizer/explain_plan.h>
51
 
#include <drizzled/pthread_globals.h>
52
 
#include <drizzled/plugin/event_observer.h>
53
 
#include <drizzled/visibility.h>
54
 
 
55
 
#include <drizzled/schema.h>
 
41
#include "drizzled/probes.h"
 
42
#include "drizzled/session_list.h"
 
43
#include "drizzled/global_charset_info.h"
 
44
 
 
45
#include "drizzled/plugin/logging.h"
 
46
#include "drizzled/plugin/query_rewrite.h"
 
47
#include "drizzled/plugin/query_cache.h"
 
48
#include "drizzled/plugin/authorization.h"
 
49
#include "drizzled/optimizer/explain_plan.h"
 
50
#include "drizzled/pthread_globals.h"
 
51
#include "drizzled/plugin/event_observer.h"
56
52
 
57
53
#include <limits.h>
58
54
 
59
55
#include <bitset>
60
56
#include <algorithm>
61
 
#include <boost/date_time.hpp>
62
 
#include <drizzled/internal/my_sys.h>
 
57
 
 
58
#include "drizzled/internal/my_sys.h"
63
59
 
64
60
using namespace std;
65
61
 
66
 
extern int base_sql_parse(drizzled::Session *session); // from sql_yacc.cc
 
62
extern int DRIZZLEparse(void *session); // from sql_yacc.cc
67
63
 
68
64
namespace drizzled
69
65
{
70
66
 
71
67
/* Prototypes */
72
 
bool my_yyoverflow(short **a, ParserType **b, ulong *yystacksize);
 
68
bool my_yyoverflow(short **a, YYSTYPE **b, ulong *yystacksize);
73
69
static bool parse_sql(Session *session, Lex_input_stream *lip);
74
 
void parse(Session *session, const char *inBuf, uint32_t length);
 
70
void mysql_parse(Session *session, const char *inBuf, uint32_t length);
75
71
 
76
72
/**
77
73
  @defgroup Runtime_Environment Runtime Environment
81
77
extern size_t my_thread_stack_size;
82
78
extern const CHARSET_INFO *character_set_filesystem;
83
79
 
84
 
namespace
85
 
{
86
 
 
87
 
static const std::string command_name[COM_END+1]={
88
 
  "Sleep",
89
 
  "Quit",
90
 
  "Init DB",
91
 
  "Query",
92
 
  "Shutdown",
93
 
  "Connect",
94
 
  "Ping",
95
 
  "Error"  // Last command number
 
80
const LEX_STRING command_name[COM_END+1]={
 
81
  { C_STRING_WITH_LEN("Sleep") },
 
82
  { C_STRING_WITH_LEN("Quit") },
 
83
  { C_STRING_WITH_LEN("Init DB") },
 
84
  { C_STRING_WITH_LEN("Query") },
 
85
  { C_STRING_WITH_LEN("Shutdown") },
 
86
  { C_STRING_WITH_LEN("Connect") },
 
87
  { C_STRING_WITH_LEN("Ping") },
 
88
  { C_STRING_WITH_LEN("Error") }  // Last command number
96
89
};
97
90
 
98
 
}
99
 
 
100
91
const char *xa_state_names[]={
101
92
  "NON-EXISTING", "ACTIVE", "IDLE", "PREPARED"
102
93
};
115
106
*/
116
107
bitset<CF_BIT_SIZE> sql_command_flags[SQLCOM_END+1];
117
108
 
118
 
const std::string &getCommandName(const enum_server_command& command)
119
 
{
120
 
  return command_name[command];
121
 
}
122
 
 
123
109
void init_update_queries(void)
124
110
{
125
111
  uint32_t x;
168
154
                         can be zero.
169
155
 
170
156
  @todo
171
 
    set session->getLex()->sql_command to SQLCOM_END here.
 
157
    set session->lex->sql_command to SQLCOM_END here.
172
158
  @todo
173
159
    The following has to be changed to an 8 byte integer
174
160
 
184
170
  bool error= 0;
185
171
  Query_id &query_id= Query_id::get_query_id();
186
172
 
187
 
  DRIZZLE_COMMAND_START(session->thread_id, command);
 
173
  DRIZZLE_COMMAND_START(session->thread_id,
 
174
                        command);
188
175
 
189
176
  session->command= command;
190
 
  session->getLex()->sql_command= SQLCOM_END; /* to avoid confusing VIEW detectors */
 
177
  session->lex->sql_command= SQLCOM_END; /* to avoid confusing VIEW detectors */
191
178
  session->set_time();
192
179
  session->setQueryId(query_id.value());
193
180
 
201
188
    query_id.next();
202
189
  }
203
190
 
204
 
  /* @todo set session->getLex()->sql_command to SQLCOM_END here */
 
191
  /* TODO: set session->lex->sql_command to SQLCOM_END here */
205
192
 
206
193
  plugin::Logging::preDo(session);
207
194
  if (unlikely(plugin::EventObserver::beforeStatement(*session)))
222
209
 
223
210
    string tmp(packet, packet_length);
224
211
 
225
 
    identifier::Schema identifier(tmp);
 
212
    SchemaIdentifier identifier(tmp);
226
213
 
227
 
    if (not schema::change(*session, identifier))
 
214
    if (not mysql_change_db(session, identifier))
228
215
    {
229
216
      session->my_ok();
230
217
    }
234
221
  {
235
222
    if (not session->readAndStoreQuery(packet, packet_length))
236
223
      break;                                    // fatal error is set
237
 
    DRIZZLE_QUERY_START(session->getQueryString()->c_str(),
 
224
    DRIZZLE_QUERY_START(session->query.c_str(),
238
225
                        session->thread_id,
239
 
                        const_cast<const char *>(session->schema()->c_str()));
 
226
                        const_cast<const char *>(session->db.empty() ? "" : session->db.c_str()));
240
227
 
241
 
    parse(session, session->getQueryString()->c_str(), session->getQueryString()->length());
 
228
    plugin::QueryRewriter::rewriteQuery(session->db, session->query);
 
229
    std::cerr << "SQL:" << session->query << "\n";
 
230
    mysql_parse(session, session->query.c_str(), session->query.length());
242
231
 
243
232
    break;
244
233
  }
271
260
  /* If commit fails, we should be able to reset the OK status. */
272
261
  session->main_da.can_overwrite_status= true;
273
262
  TransactionServices &transaction_services= TransactionServices::singleton();
274
 
  transaction_services.autocommitOrRollback(*session, session->is_error());
 
263
  transaction_services.autocommitOrRollback(session, session->is_error());
275
264
  session->main_da.can_overwrite_status= false;
276
265
 
277
266
  session->transaction.stmt.reset();
296
285
  {
297
286
  case Diagnostics_area::DA_ERROR:
298
287
    /* The query failed, send error to log and abort bootstrap. */
299
 
    session->getClient()->sendError(session->main_da.sql_errno(),
 
288
    session->client->sendError(session->main_da.sql_errno(),
300
289
                               session->main_da.message());
301
290
    break;
302
291
 
303
292
  case Diagnostics_area::DA_EOF:
304
 
    session->getClient()->sendEOF();
 
293
    session->client->sendEOF();
305
294
    break;
306
295
 
307
296
  case Diagnostics_area::DA_OK:
308
 
    session->getClient()->sendOK();
 
297
    session->client->sendOK();
309
298
    break;
310
299
 
311
300
  case Diagnostics_area::DA_DISABLED:
313
302
 
314
303
  case Diagnostics_area::DA_EMPTY:
315
304
  default:
316
 
    session->getClient()->sendOK();
 
305
    session->client->sendOK();
317
306
    break;
318
307
  }
319
308
 
332
321
  /* Store temp state for processlist */
333
322
  session->set_proc_info("cleaning up");
334
323
  session->command= COM_SLEEP;
335
 
  session->resetQueryString();
 
324
  memset(session->process_list_info, 0, PROCESS_LIST_WIDTH);
 
325
  session->query.clear();
336
326
 
337
327
  session->set_proc_info(NULL);
338
328
  session->mem_root->free_root(MYF(memory::KEEP_PREALLOC));
443
433
    true        Error
444
434
*/
445
435
 
446
 
static int execute_command(Session *session)
 
436
static int
 
437
mysql_execute_command(Session *session)
447
438
{
448
439
  bool res= false;
449
 
 
 
440
  LEX  *lex= session->lex;
450
441
  /* first Select_Lex (have special meaning for many of non-SELECTcommands) */
451
 
  Select_Lex *select_lex= &session->getLex()->select_lex;
452
 
 
 
442
  Select_Lex *select_lex= &lex->select_lex;
453
443
  /* list of all tables in query */
454
444
  TableList *all_tables;
 
445
  /* A peek into the query string */
 
446
  size_t proc_info_len= session->query.length() > PROCESS_LIST_WIDTH ?
 
447
                        PROCESS_LIST_WIDTH : session->query.length();
 
448
 
 
449
  memcpy(session->process_list_info, session->query.c_str(), proc_info_len);
 
450
  session->process_list_info[proc_info_len]= '\0';
455
451
 
456
452
  /*
457
453
    In many cases first table of main Select_Lex have special meaning =>
468
464
    assert(first_table == all_tables);
469
465
    assert(first_table == all_tables && first_table != 0);
470
466
  */
471
 
  session->getLex()->first_lists_tables_same();
472
 
 
 
467
  lex->first_lists_tables_same();
473
468
  /* should be assigned after making first tables same */
474
 
  all_tables= session->getLex()->query_tables;
475
 
 
 
469
  all_tables= lex->query_tables;
476
470
  /* set context for commands which do not use setup_tables */
477
 
  select_lex->context.resolve_in_table_list_only((TableList*)select_lex->table_list.first);
 
471
  select_lex->
 
472
    context.resolve_in_table_list_only((TableList*)select_lex->
 
473
                                       table_list.first);
478
474
 
479
475
  /*
480
476
    Reset warning count for each query that uses tables
483
479
    variables, but for now this is probably good enough.
484
480
    Don't reset warnings when executing a stored routine.
485
481
  */
486
 
  if (all_tables || ! session->getLex()->is_single_level_stmt())
 
482
  if (all_tables || ! lex->is_single_level_stmt())
487
483
  {
488
484
    drizzle_reset_errors(session, 0);
489
485
  }
490
486
 
491
487
  assert(session->transaction.stmt.hasModifiedNonTransData() == false);
492
488
 
493
 
  if (! (session->server_status & SERVER_STATUS_AUTOCOMMIT)
494
 
      && ! session->inTransaction()
495
 
      && session->getLex()->statement->isTransactional())
496
 
  {
497
 
    if (session->startTransaction() == false)
498
 
    {
499
 
      my_error(drizzled::ER_UNKNOWN_ERROR, MYF(0));
500
 
      return true;
501
 
    }
502
 
  }
503
 
 
504
489
  /* now we are ready to execute the statement */
505
 
  res= session->getLex()->statement->execute();
 
490
  res= lex->statement->execute();
506
491
  session->set_proc_info("query end");
507
492
  /*
508
493
    The return value for ROW_COUNT() is "implementation dependent" if the
510
495
    wants. We also keep the last value in case of SQLCOM_CALL or
511
496
    SQLCOM_EXECUTE.
512
497
  */
513
 
  if (! (sql_command_flags[session->getLex()->sql_command].test(CF_BIT_HAS_ROW_COUNT)))
 
498
  if (! (sql_command_flags[lex->sql_command].test(CF_BIT_HAS_ROW_COUNT)))
514
499
  {
515
500
    session->row_count_func= -1;
516
501
  }
519
504
}
520
505
bool execute_sqlcom_select(Session *session, TableList *all_tables)
521
506
{
522
 
  LEX   *lex= session->getLex();
 
507
  LEX   *lex= session->lex;
523
508
  select_result *result=lex->result;
524
509
  bool res= false;
525
510
  /* assign global limit variable if limit is not given */
529
514
      param->select_limit=
530
515
        new Item_int((uint64_t) session->variables.select_limit);
531
516
  }
532
 
 
533
 
  if (all_tables
534
 
      && ! (session->server_status & SERVER_STATUS_AUTOCOMMIT)
535
 
      && ! session->inTransaction()
536
 
      && ! lex->statement->isShow())
537
 
  {
538
 
    if (session->startTransaction() == false)
539
 
    {
540
 
      my_error(drizzled::ER_UNKNOWN_ERROR, MYF(0));
541
 
      return true;
542
 
    }
543
 
  }
544
 
 
545
517
  if (not (res= session->openTablesLock(all_tables)))
546
518
  {
547
519
    if (lex->describe)
556
528
        return true;
557
529
      session->send_explain_fields(result);
558
530
      optimizer::ExplainPlan planner;
559
 
      res= planner.explainUnion(session, &session->getLex()->unit, result);
 
531
      res= planner.explainUnion(session, &session->lex->unit, result);
560
532
      if (lex->describe & DESCRIBE_EXTENDED)
561
533
      {
562
534
        char buff[1024];
563
535
        String str(buff,(uint32_t) sizeof(buff), system_charset_info);
564
536
        str.length(0);
565
 
        session->getLex()->unit.print(&str, QT_ORDINARY);
 
537
        session->lex->unit.print(&str, QT_ORDINARY);
566
538
        str.append('\0');
567
539
        push_warning(session, DRIZZLE_ERROR::WARN_LEVEL_NOTE,
568
540
                     ER_YES, str.ptr());
571
543
        result->abort();
572
544
      else
573
545
        result->send_eof();
574
 
 
575
546
      delete result;
576
547
    }
577
548
    else
596
567
#define MY_YACC_INIT 1000                       // Start with big alloc
597
568
#define MY_YACC_MAX  32000                      // Because of 'short'
598
569
 
599
 
bool my_yyoverflow(short **yyss, ParserType **yyvs, ulong *yystacksize)
 
570
bool my_yyoverflow(short **yyss, YYSTYPE **yyvs, ulong *yystacksize)
600
571
{
601
 
  LEX   *lex= current_session->getLex();
 
572
  LEX   *lex= current_session->lex;
602
573
  ulong old_info=0;
603
574
  if ((uint32_t) *yystacksize >= MY_YACC_MAX)
604
575
    return 1;
621
592
    memcpy(lex->yacc_yyvs, *yyvs, old_info*sizeof(**yyvs));
622
593
  }
623
594
  *yyss=(short*) lex->yacc_yyss;
624
 
  *yyvs=(ParserType*) lex->yacc_yyvs;
 
595
  *yyvs=(YYSTYPE*) lex->yacc_yyvs;
625
596
  return 0;
626
597
}
627
598
 
628
599
 
629
600
void
630
 
init_select(LEX *lex)
 
601
mysql_init_select(LEX *lex)
631
602
{
632
603
  Select_Lex *select_lex= lex->current_select;
633
604
  select_lex->init_select();
641
612
 
642
613
 
643
614
bool
644
 
new_select(LEX *lex, bool move_down)
 
615
mysql_new_select(LEX *lex, bool move_down)
645
616
{
646
617
  Select_Lex *select_lex;
647
618
  Session *session= lex->session;
648
619
 
649
620
  if (!(select_lex= new (session->mem_root) Select_Lex()))
650
 
    return true;
651
 
 
 
621
    return(1);
652
622
  select_lex->select_number= ++session->select_number;
653
623
  select_lex->parent_lex= lex; /* Used in init_query. */
654
624
  select_lex->init_query();
655
625
  select_lex->init_select();
656
626
  lex->nest_level++;
657
 
 
658
627
  if (lex->nest_level > (int) MAX_SELECT_NESTING)
659
628
  {
660
629
    my_error(ER_TOO_HIGH_LEVEL_OF_NESTING_FOR_SELECT,MYF(0),MAX_SELECT_NESTING);
661
630
    return(1);
662
631
  }
663
 
 
664
632
  select_lex->nest_level= lex->nest_level;
665
633
  if (move_down)
666
634
  {
688
656
    if (lex->current_select->order_list.first && !lex->current_select->braces)
689
657
    {
690
658
      my_error(ER_WRONG_USAGE, MYF(0), "UNION", "order_st BY");
691
 
      return true;
 
659
      return(1);
692
660
    }
693
 
 
694
661
    select_lex->include_neighbour(lex->current_select);
695
662
    Select_Lex_Unit *unit= select_lex->master_unit();
696
 
 
697
 
    if (not unit->fake_select_lex && unit->add_fake_select_lex(lex->session))
698
 
      return true;
699
 
 
 
663
    if (!unit->fake_select_lex && unit->add_fake_select_lex(lex->session))
 
664
      return(1);
700
665
    select_lex->context.outer_context=
701
666
                unit->first_select()->context.outer_context;
702
667
  }
709
674
    list
710
675
  */
711
676
  select_lex->context.resolve_in_select_list= true;
712
 
 
713
 
  return false;
 
677
  return(0);
714
678
}
715
679
 
716
680
/**
723
687
  @param var_name               Variable name
724
688
*/
725
689
 
726
 
void create_select_for_variable(Session *session, const char *var_name)
 
690
void create_select_for_variable(const char *var_name)
727
691
{
 
692
  Session *session;
728
693
  LEX *lex;
729
694
  LEX_STRING tmp, null_lex_string;
730
695
  Item *var;
731
696
  char buff[MAX_SYS_VAR_LENGTH*2+4+8];
732
697
  char *end= buff;
733
698
 
734
 
  lex= session->getLex();
735
 
  init_select(lex);
 
699
  session= current_session;
 
700
  lex= session->lex;
 
701
  mysql_init_select(lex);
736
702
  lex->sql_command= SQLCOM_SELECT;
737
703
  tmp.str= (char*) var_name;
738
704
  tmp.length=strlen(var_name);
747
713
    var->set_name(buff, end-buff, system_charset_info);
748
714
    session->add_item_to_list(var);
749
715
  }
 
716
  return;
750
717
}
751
718
 
752
719
 
758
725
  @param       length  Length of the query text
759
726
*/
760
727
 
761
 
void parse(Session *session, const char *inBuf, uint32_t length)
 
728
void mysql_parse(Session *session, const char *inBuf, uint32_t length)
762
729
{
763
 
  session->getLex()->start(session);
764
 
 
 
730
  uint64_t start_time= my_getsystime();
 
731
  session->lex->start(session);
765
732
  session->reset_for_next_command();
766
733
  /* Check if the Query is Cached if and return true if yes
767
734
   * TODO the plugin has to make sure that the query is cacheble
776
743
  {
777
744
    return;
778
745
  }
779
 
  LEX *lex= session->getLex();
 
746
  LEX *lex= session->lex;
780
747
  Lex_input_stream lip(session, inBuf, length);
781
748
  bool err= parse_sql(session, &lip);
782
749
  if (!err)
783
750
  {
784
751
    {
785
 
      if (not session->is_error())
 
752
      if (! session->is_error())
786
753
      {
787
 
        DRIZZLE_QUERY_EXEC_START(session->getQueryString()->c_str(),
 
754
        DRIZZLE_QUERY_EXEC_START(session->query.c_str(),
788
755
                                 session->thread_id,
789
 
                                 const_cast<const char *>(session->schema()->c_str()));
 
756
                                 const_cast<const char *>(session->db.empty() ? "" : session->db.c_str()));
790
757
        // Implement Views here --Brian
791
758
        /* Actually execute the query */
792
759
        try 
793
760
        {
794
 
          execute_command(session);
 
761
          mysql_execute_command(session);
795
762
        }
796
763
        catch (...)
797
764
        {
798
765
          // Just try to catch any random failures that could have come
799
766
          // during execution.
800
 
          DRIZZLE_ABORT;
801
767
        }
802
768
        DRIZZLE_QUERY_EXEC_DONE(0);
803
769
      }
811
777
  session->set_proc_info("freeing items");
812
778
  session->end_statement();
813
779
  session->cleanup_after_query();
814
 
  session->set_end_timer();
 
780
  session->status_var.execution_time_nsec+= my_getsystime() - start_time;
815
781
}
816
782
 
817
783
 
833
799
                       List<String> *interval_list, const CHARSET_INFO * const cs)
834
800
{
835
801
  register CreateField *new_field;
836
 
  LEX  *lex= session->getLex();
 
802
  LEX  *lex= session->lex;
837
803
  statement::AlterTable *statement= (statement::AlterTable *)lex->statement;
838
804
 
839
805
  if (check_identifier_name(field_name, ER_TOO_LONG_IDENT))
847
813
                      &default_key_create_info,
848
814
                      0, lex->col_list);
849
815
    statement->alter_info.key_list.push_back(key);
850
 
    lex->col_list.clear();
 
816
    lex->col_list.empty();
851
817
  }
852
818
  if (type_modifier & (UNIQUE_FLAG | UNIQUE_KEY_FLAG))
853
819
  {
857
823
                 &default_key_create_info, 0,
858
824
                 lex->col_list);
859
825
    statement->alter_info.key_list.push_back(key);
860
 
    lex->col_list.clear();
 
826
    lex->col_list.empty();
861
827
  }
862
828
 
863
829
  if (default_value)
871
837
    */
872
838
    if (default_value->type() == Item::FUNC_ITEM &&
873
839
        !(((Item_func*)default_value)->functype() == Item_func::NOW_FUNC &&
874
 
         (type == DRIZZLE_TYPE_TIMESTAMP or type == DRIZZLE_TYPE_MICROTIME)))
 
840
         type == DRIZZLE_TYPE_TIMESTAMP))
875
841
    {
876
842
      my_error(ER_INVALID_DEFAULT, MYF(0), field_name->str);
877
843
      return true;
879
845
    else if (default_value->type() == Item::NULL_ITEM)
880
846
    {
881
847
      default_value= 0;
882
 
      if ((type_modifier & (NOT_NULL_FLAG | AUTO_INCREMENT_FLAG)) == NOT_NULL_FLAG)
 
848
      if ((type_modifier & (NOT_NULL_FLAG | AUTO_INCREMENT_FLAG)) ==
 
849
          NOT_NULL_FLAG)
883
850
      {
884
851
        my_error(ER_INVALID_DEFAULT, MYF(0), field_name->str);
885
852
        return true;
892
859
    }
893
860
  }
894
861
 
895
 
  if (on_update_value && (type != DRIZZLE_TYPE_TIMESTAMP and type != DRIZZLE_TYPE_MICROTIME))
 
862
  if (on_update_value && type != DRIZZLE_TYPE_TIMESTAMP)
896
863
  {
897
864
    my_error(ER_INVALID_ON_UPDATE, MYF(0), field_name->str);
898
865
    return true;
911
878
}
912
879
 
913
880
 
 
881
/** Store position for column in ALTER TABLE .. ADD column. */
 
882
 
 
883
void store_position_for_column(const char *name)
 
884
{
 
885
  current_session->lex->last_field->after=const_cast<char*> (name);
 
886
}
 
887
 
914
888
/**
915
889
  Add a table to list of used tables.
916
890
 
931
905
*/
932
906
 
933
907
TableList *Select_Lex::add_table_to_list(Session *session,
934
 
                                         Table_ident *table,
935
 
                                         LEX_STRING *alias,
936
 
                                         const bitset<NUM_OF_TABLE_OPTIONS>& table_options,
937
 
                                         thr_lock_type lock_type,
938
 
                                         List<Index_hint> *index_hints_arg,
 
908
                                                             Table_ident *table,
 
909
                                                             LEX_STRING *alias,
 
910
                                                             const bitset<NUM_OF_TABLE_OPTIONS>& table_options,
 
911
                                                             thr_lock_type lock_type,
 
912
                                                             List<Index_hint> *index_hints_arg,
939
913
                                         LEX_STRING *option)
940
914
{
941
915
  TableList *ptr;
942
916
  TableList *previous_table_ref; /* The table preceding the current one. */
943
917
  char *alias_str;
944
 
  LEX *lex= session->getLex();
 
918
  LEX *lex= session->lex;
945
919
 
946
920
  if (!table)
947
921
    return NULL;                                // End of memory
957
931
  {
958
932
    my_casedn_str(files_charset_info, table->db.str);
959
933
 
960
 
    identifier::Schema schema_identifier(string(table->db.str));
961
 
    if (not schema::check(*session, schema_identifier))
 
934
    SchemaIdentifier schema_identifier(string(table->db.str));
 
935
    if (not check_db_name(session, schema_identifier))
962
936
    {
963
937
 
964
938
      my_error(ER_WRONG_DB_NAME, MYF(0), table->db.str);
974
948
                 ER(ER_DERIVED_MUST_HAVE_ALIAS), MYF(0));
975
949
      return NULL;
976
950
    }
977
 
    if (!(alias_str= (char*) session->getMemRoot()->duplicate(alias_str,table->table.length+1)))
 
951
    if (!(alias_str= (char*) session->memdup(alias_str,table->table.length+1)))
978
952
      return NULL;
979
953
  }
980
954
  if (!(ptr = (TableList *) session->calloc(sizeof(TableList))))
993
967
 
994
968
  ptr->alias= alias_str;
995
969
  ptr->setIsAlias(alias ? true : false);
 
970
  if (table->table.length)
 
971
    table->table.length= my_casedn_str(files_charset_info, table->table.str);
996
972
  ptr->setTableName(table->table.str);
997
973
  ptr->table_name_length=table->table.length;
998
974
  ptr->lock_type=   lock_type;
1010
986
         tables ;
1011
987
         tables=tables->next_local)
1012
988
    {
1013
 
      if (not my_strcasecmp(table_alias_charset, alias_str, tables->alias) &&
1014
 
          not my_strcasecmp(system_charset_info, ptr->getSchemaName(), tables->getSchemaName()))
 
989
      if (!my_strcasecmp(table_alias_charset, alias_str, tables->alias) &&
 
990
          !strcasecmp(ptr->getSchemaName(), tables->getSchemaName()))
1015
991
      {
1016
992
        my_error(ER_NONUNIQ_TABLE, MYF(0), alias_str);
1017
993
        return NULL;
1075
1051
bool Select_Lex::init_nested_join(Session *session)
1076
1052
{
1077
1053
  TableList *ptr;
1078
 
  NestedJoin *nested_join;
 
1054
  nested_join_st *nested_join;
1079
1055
 
1080
1056
  if (!(ptr= (TableList*) session->calloc(ALIGN_SIZE(sizeof(TableList))+
1081
 
                                       sizeof(NestedJoin))))
 
1057
                                       sizeof(nested_join_st))))
1082
1058
    return true;
1083
 
  ptr->setNestedJoin(((NestedJoin*) ((unsigned char*) ptr + ALIGN_SIZE(sizeof(TableList)))));
 
1059
  ptr->setNestedJoin(((nested_join_st*) ((unsigned char*) ptr + ALIGN_SIZE(sizeof(TableList)))));
1084
1060
  nested_join= ptr->getNestedJoin();
1085
1061
  join_list->push_front(ptr);
1086
1062
  ptr->setEmbedding(embedding);
1088
1064
  ptr->alias= (char*) "(nested_join)";
1089
1065
  embedding= ptr;
1090
1066
  join_list= &nested_join->join_list;
1091
 
  join_list->clear();
 
1067
  join_list->empty();
1092
1068
  return false;
1093
1069
}
1094
1070
 
1110
1086
TableList *Select_Lex::end_nested_join(Session *)
1111
1087
{
1112
1088
  TableList *ptr;
1113
 
  NestedJoin *nested_join;
 
1089
  nested_join_st *nested_join;
1114
1090
 
1115
1091
  assert(embedding);
1116
1092
  ptr= embedding;
1151
1127
TableList *Select_Lex::nest_last_join(Session *session)
1152
1128
{
1153
1129
  TableList *ptr;
1154
 
  NestedJoin *nested_join;
 
1130
  nested_join_st *nested_join;
1155
1131
  List<TableList> *embedded_list;
1156
1132
 
1157
1133
  if (!(ptr= (TableList*) session->calloc(ALIGN_SIZE(sizeof(TableList))+
1158
 
                                          sizeof(NestedJoin))))
 
1134
                                          sizeof(nested_join_st))))
1159
1135
    return NULL;
1160
 
  ptr->setNestedJoin(((NestedJoin*) ((unsigned char*) ptr + ALIGN_SIZE(sizeof(TableList)))));
 
1136
  ptr->setNestedJoin(((nested_join_st*) ((unsigned char*) ptr + ALIGN_SIZE(sizeof(TableList)))));
1161
1137
  nested_join= ptr->getNestedJoin();
1162
1138
  ptr->setEmbedding(embedding);
1163
1139
  ptr->setJoinList(join_list);
1164
1140
  ptr->alias= (char*) "(nest_last_join)";
1165
1141
  embedded_list= &nested_join->join_list;
1166
 
  embedded_list->clear();
 
1142
  embedded_list->empty();
1167
1143
 
1168
1144
  for (uint32_t i=0; i < 2; i++)
1169
1145
  {
1311
1287
  fake_select_lex->include_standalone(this,
1312
1288
                                      (Select_Lex_Node**)&fake_select_lex);
1313
1289
  fake_select_lex->select_number= INT_MAX;
1314
 
  fake_select_lex->parent_lex= session_arg->getLex(); /* Used in init_query. */
 
1290
  fake_select_lex->parent_lex= session_arg->lex; /* Used in init_query. */
1315
1291
  fake_select_lex->make_empty_select();
1316
1292
  fake_select_lex->linkage= GLOBAL_OPTIONS_TYPE;
1317
1293
  fake_select_lex->select_limit= 0;
1331
1307
    */
1332
1308
    global_parameters= fake_select_lex;
1333
1309
    fake_select_lex->no_table_names_allowed= 1;
1334
 
    session_arg->getLex()->current_select= fake_select_lex;
 
1310
    session_arg->lex->current_select= fake_select_lex;
1335
1311
  }
1336
 
  session_arg->getLex()->pop_context();
 
1312
  session_arg->lex->pop_context();
1337
1313
  return(0);
1338
1314
}
1339
1315
 
1369
1345
    left_op->first_leaf_for_name_resolution();
1370
1346
  on_context->last_name_resolution_table=
1371
1347
    right_op->last_leaf_for_name_resolution();
1372
 
  return session->getLex()->push_context(on_context);
 
1348
  return session->lex->push_context(on_context);
1373
1349
}
1374
1350
 
1375
1351
 
1449
1425
 
1450
1426
 
1451
1427
/**
 
1428
  kill on thread.
 
1429
 
 
1430
  @param session                        Thread class
 
1431
  @param id                     Thread id
 
1432
  @param only_kill_query        Should it kill the query or the connection
 
1433
 
 
1434
  @note
 
1435
    This is written such that we have a short lock on LOCK_thread_count
 
1436
*/
 
1437
 
 
1438
static unsigned int
 
1439
kill_one_thread(Session *, session_id_t id, bool only_kill_query)
 
1440
{
 
1441
  Session *tmp= NULL;
 
1442
  uint32_t error= ER_NO_SUCH_THREAD;
 
1443
  
 
1444
  {
 
1445
    boost::mutex::scoped_lock scoped(LOCK_thread_count);
 
1446
    for (SessionList::iterator it= getSessionList().begin(); it != getSessionList().end(); ++it )
 
1447
    {
 
1448
      if ((*it)->thread_id == id)
 
1449
      {
 
1450
        tmp= *it;
 
1451
        tmp->lockForDelete();
 
1452
        break;
 
1453
      }
 
1454
    }
 
1455
  }
 
1456
 
 
1457
  if (tmp)
 
1458
  {
 
1459
 
 
1460
    if (tmp->isViewable())
 
1461
    {
 
1462
      tmp->awake(only_kill_query ? Session::KILL_QUERY : Session::KILL_CONNECTION);
 
1463
      error= 0;
 
1464
    }
 
1465
 
 
1466
    tmp->unlockForDelete();
 
1467
  }
 
1468
  return(error);
 
1469
}
 
1470
 
 
1471
 
 
1472
/*
 
1473
  kills a thread and sends response
 
1474
 
 
1475
  SYNOPSIS
 
1476
    sql_kill()
 
1477
    session                     Thread class
 
1478
    id                  Thread id
 
1479
    only_kill_query     Should it kill the query or the connection
 
1480
*/
 
1481
 
 
1482
void sql_kill(Session *session, int64_t id, bool only_kill_query)
 
1483
{
 
1484
  uint32_t error;
 
1485
  if (!(error= kill_one_thread(session, id, only_kill_query)))
 
1486
    session->my_ok();
 
1487
  else
 
1488
    my_error(error, MYF(0), id);
 
1489
}
 
1490
 
 
1491
 
 
1492
/**
1452
1493
  Check if the select is a simple select (not an union).
1453
1494
 
1454
1495
  @retval
1457
1498
    1   error   ; In this case the error messege is sent to the client
1458
1499
*/
1459
1500
 
1460
 
bool check_simple_select(Session::pointer session)
 
1501
bool check_simple_select()
1461
1502
{
1462
 
  if (session->getLex()->current_select != &session->getLex()->select_lex)
 
1503
  Session *session= current_session;
 
1504
  LEX *lex= session->lex;
 
1505
  if (lex->current_select != &lex->select_lex)
1463
1506
  {
1464
1507
    char command[80];
1465
1508
    Lex_input_stream *lip= session->m_lip;
1519
1562
bool update_precheck(Session *session, TableList *)
1520
1563
{
1521
1564
  const char *msg= 0;
1522
 
  Select_Lex *select_lex= &session->getLex()->select_lex;
 
1565
  LEX *lex= session->lex;
 
1566
  Select_Lex *select_lex= &lex->select_lex;
1523
1567
 
1524
 
  if (session->getLex()->select_lex.item_list.elements != session->getLex()->value_list.elements)
 
1568
  if (session->lex->select_lex.item_list.elements != session->lex->value_list.elements)
1525
1569
  {
1526
1570
    my_message(ER_WRONG_VALUE_COUNT, ER(ER_WRONG_VALUE_COUNT), MYF(0));
1527
1571
    return(true);
1528
1572
  }
1529
1573
 
1530
 
  if (session->getLex()->select_lex.table_list.elements > 1)
 
1574
  if (session->lex->select_lex.table_list.elements > 1)
1531
1575
  {
1532
1576
    if (select_lex->order_list.elements)
1533
1577
      msg= "ORDER BY";
1557
1601
 
1558
1602
bool insert_precheck(Session *session, TableList *)
1559
1603
{
 
1604
  LEX *lex= session->lex;
 
1605
 
1560
1606
  /*
1561
1607
    Check that we have modify privileges for the first table and
1562
1608
    select privileges for the rest
1563
1609
  */
1564
 
  if (session->getLex()->update_list.elements != session->getLex()->value_list.elements)
 
1610
  if (lex->update_list.elements != lex->value_list.elements)
1565
1611
  {
1566
1612
    my_message(ER_WRONG_VALUE_COUNT, ER(ER_WRONG_VALUE_COUNT), MYF(0));
1567
1613
    return(true);
1571
1617
 
1572
1618
 
1573
1619
/**
 
1620
  CREATE TABLE query pre-check.
 
1621
 
 
1622
  @param session                        Thread handler
 
1623
  @param tables         Global table list
 
1624
  @param create_table           Table which will be created
 
1625
 
 
1626
  @retval
 
1627
    false   OK
 
1628
  @retval
 
1629
    true   Error
 
1630
*/
 
1631
 
 
1632
bool create_table_precheck(TableIdentifier &identifier)
 
1633
{
 
1634
  if (not plugin::StorageEngine::canCreateTable(identifier))
 
1635
  {
 
1636
    my_error(ER_DBACCESS_DENIED_ERROR, MYF(0), "", "", identifier.getSchemaName().c_str());
 
1637
    return true;
 
1638
  }
 
1639
 
 
1640
  if (not plugin::StorageEngine::doesSchemaExist(identifier))
 
1641
  {
 
1642
    my_error(ER_BAD_DB_ERROR, MYF(0), identifier.getSchemaName().c_str());
 
1643
    return true;
 
1644
  }
 
1645
 
 
1646
  return false;
 
1647
}
 
1648
 
 
1649
 
 
1650
/**
1574
1651
  negate given expression.
1575
1652
 
1576
1653
  @param session  thread handler
1588
1665
  {
1589
1666
    /* it is NOT(NOT( ... )) */
1590
1667
    Item *arg= ((Item_func *) expr)->arguments()[0];
1591
 
    enum_parsing_place place= session->getLex()->current_select->parsing_place;
 
1668
    enum_parsing_place place= session->lex->current_select->parsing_place;
1592
1669
    if (arg->is_bool_func() || place == IN_WHERE || place == IN_HAVING)
1593
1670
      return arg;
1594
1671
    /*
1637
1714
}
1638
1715
 
1639
1716
 
1640
 
bool check_identifier_name(LEX_STRING *str, error_t err_code,
 
1717
bool check_identifier_name(LEX_STRING *str, uint32_t err_code,
1641
1718
                           uint32_t max_char_length,
1642
1719
                           const char *param_for_err_msg)
1643
1720
{
1663
1740
 
1664
1741
  switch (err_code)
1665
1742
  {
1666
 
  case EE_OK:
 
1743
  case 0:
1667
1744
    break;
1668
1745
  case ER_WRONG_STRING_LENGTH:
1669
1746
    my_error(err_code, MYF(0), str->str, param_for_err_msg, max_char_length);
1675
1752
    assert(0);
1676
1753
    break;
1677
1754
  }
1678
 
 
1679
1755
  return true;
1680
1756
}
1681
1757
 
1696
1772
{
1697
1773
  assert(session->m_lip == NULL);
1698
1774
 
1699
 
  DRIZZLE_QUERY_PARSE_START(session->getQueryString()->c_str());
 
1775
  DRIZZLE_QUERY_PARSE_START(session->query.c_str());
1700
1776
 
1701
1777
  /* Set Lex_input_stream. */
1702
1778
 
1704
1780
 
1705
1781
  /* Parse the query. */
1706
1782
 
1707
 
  bool parse_status= base_sql_parse(session) != 0;
 
1783
  bool mysql_parse_status= DRIZZLEparse(session) != 0;
1708
1784
 
1709
1785
  /* Check that if DRIZZLEparse() failed, session->is_error() is set. */
1710
1786
 
1711
 
  assert(!parse_status || session->is_error());
 
1787
  assert(!mysql_parse_status || session->is_error());
1712
1788
 
1713
1789
  /* Reset Lex_input_stream. */
1714
1790
 
1715
1791
  session->m_lip= NULL;
1716
1792
 
1717
 
  DRIZZLE_QUERY_PARSE_DONE(parse_status || session->is_fatal_error);
 
1793
  DRIZZLE_QUERY_PARSE_DONE(mysql_parse_status || session->is_fatal_error);
1718
1794
 
1719
1795
  /* That's it. */
1720
1796
 
1721
 
  return parse_status || session->is_fatal_error;
 
1797
  return mysql_parse_status || session->is_fatal_error;
1722
1798
}
1723
1799
 
1724
1800
/**