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f6428e8bb9
SQL_SELECT_LIMIT as default will be applied only for SELECT statement if there was not explicit LIMIT clause correct table list passed to class constructor of select_update mysql-test/r/subselect.result: do not show limit if it is not explicit mysql-test/r/union.result: test of LIMIT + ORDER mysql-test/t/union.test: test of LIMIT + ORDER sql/ha_isammrg.h: caching of queries with isammerge tables forbiden sql/sql_cache.cc: removed check on isammerge sql/sql_lex.cc: tag of explicit limit in statement sql/sql_lex.h: tag of explicit limit in statement sql/sql_parse.cc: blanks in empty line removed no limit by default (SQL_SELECT_LIMIT as default will be applied only for SELECT statement if there was not explicit LIMIT clause) sql/sql_union.cc: reverted incorrect patch sql/sql_update.cc: reverted incorrect patch correct table list passed to class constructor sql/sql_yacc.yy: explicit LIMIT marked
72 lines
2.7 KiB
C++
72 lines
2.7 KiB
C++
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#ifdef __GNUC__
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#pragma interface /* gcc class implementation */
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#endif
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/* class for the the myisam merge handler */
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#include <merge.h>
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class ha_isammrg: public handler
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{
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MRG_INFO *file;
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public:
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ha_isammrg(TABLE *table): handler(table), file(0) {}
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~ha_isammrg() {}
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const char *table_type() const { return "MRG_ISAM"; }
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const char **bas_ext() const;
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ulong table_flags() const { return (HA_READ_RND_SAME | HA_KEYPOS_TO_RNDPOS |
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HA_REC_NOT_IN_SEQ | HA_FILE_BASED); }
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ulong index_flags(uint idx) const { return HA_NOT_READ_PREFIX_LAST; }
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uint max_record_length() const { return HA_MAX_REC_LENGTH; }
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uint max_keys() const { return 0; }
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uint max_key_parts() const { return 0; }
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uint max_key_length() const { return 0; }
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bool low_byte_first() const { return 0; }
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uint min_record_length(uint options) const;
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int open(const char *name, int mode, uint test_if_locked);
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int close(void);
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int write_row(byte * buf);
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int update_row(const byte * old_data, byte * new_data);
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int delete_row(const byte * buf);
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int index_read(byte * buf, const byte * key,
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uint key_len, enum ha_rkey_function find_flag);
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int index_read_idx(byte * buf, uint indx, const byte * key,
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uint key_len, enum ha_rkey_function find_flag);
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int index_next(byte * buf);
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int index_prev(byte * buf);
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int index_first(byte * buf);
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int index_last(byte * buf);
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int rnd_init(bool scan=1);
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int rnd_next(byte *buf);
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int rnd_pos(byte * buf, byte *pos);
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void position(const byte *record);
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my_off_t row_position() { return mrg_position(file); }
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void info(uint);
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int extra(enum ha_extra_function operation);
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int external_lock(THD *thd, int lock_type);
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uint lock_count(void) const;
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int create(const char *name, TABLE *form, HA_CREATE_INFO *create_info);
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THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to,
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enum thr_lock_type lock_type);
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uint8 table_cache_type() { return HA_CACHE_TBL_NOCACHE; }
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};
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