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BTREE-indexes in HEAP tables can now be used to optimize ORDER BY

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Don't read character set files if we are using only the default charset. In most cases the user will not anymore get a warning about missing character set files
Compare strings with space extend instead of space strip. Now the following comparisons holds:  "a" == "a " and "a\t" < "a". (Bug #3152).
Note: Because of the above fix, one has to do a REPAIR on any table that has an ascii character < 32 last in a CHAR/VARCHAR/TEXT columns.


heap/hp_hash.c:
  Comments and DBUG information
include/my_handler.h:
  Updated prototype for mi_compare_text
myisam/ft_boolean_search.c:
  Updated calls to mi_compare_text
myisam/ft_nlq_search.c:
  Updated calls to mi_compare_text
myisam/ft_parser.c:
  Updated calls to mi_compare_text
myisam/ft_stopwords.c:
  Updated calls to mi_compare_text
myisam/ft_update.c:
  Updated calls to mi_compare_text
myisam/mi_check.c:
  Updated calls to mi_compare_text
myisam/mi_search.c:
  Changed all string comparisons that removed end space to instead extend the shorter string with space
myisam/mi_unique.c:
  Updated calls to mi_compare_text
myisam/mi_write.c:
  Updated calls to mi_compare_text
myisam/myisam_ftdump.c:
  Removed compiler warning
mysql-test/r/ctype_collate.result:
  Fixed wrong result
mysql-test/r/heap_btree.result:
  More tests
mysql-test/t/heap_btree.test:
  more tests
mysys/charset.c:
  Don't read charsets if we are only using default charset
  Don't require 'init_available_charsets' to succeed.
mysys/my_handler.c:
  Compare strings with space extend instead of space strip
mysys/tree.c:
  Fixed code to get better results for range optimzier
sql/field.cc:
  Compare strings with space extend instead of space strip
sql/filesort.cc:
  Compare strings with space extend instead of space strip
sql/ha_heap.cc:
  Created bit map for keys that are using BTREE. This allows the optimzer to use BTREE's for sorting
sql/ha_heap.h:
  Created bit map for keys that are using BTREE. This allows the optimzer to use BTREE's for sorting
strings/ctype-big5.c:
  Compare strings with space extend instead of space strip
strings/ctype-czech.c:
  Indentation cleanup. Should be fixed to use space extend
strings/ctype-gbk.c:
  Compare strings with space extend instead of space strip
strings/ctype-latin1.c:
  Compare strings with space extend instead of space strip
  Added missing my_hash_sort_latin1_de function
strings/ctype-mb.c:
  For binary strings, don't remove end space when comparing
strings/ctype-simple.c:
  Compare strings with space extend instead of space strip
strings/ctype-sjis.c:
  Compare strings with space extend instead of space strip
strings/ctype-tis620.c:
  Added comments that we should fix end space handling
strings/ctype-ucs2.c:
  indentation fixes
strings/ctype-utf8.c:
  Added comments that we should fix end space handling
strings/ctype-win1250ch.c:
  Added comments that we should fix end space handling
This commit is contained in:
unknown 2004-03-25 15:05:01 +02:00
commit 3c46af6cf4
35 changed files with 1096 additions and 463 deletions
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10
sql/ha_heap.cc
View file

@ -44,6 +44,16 @@ int ha_heap::open(const char *name, int mode, uint test_if_locked)
}
}
ref_length= sizeof(HEAP_PTR);
if (file)
{
/* Initialize variables for the opened table */
btree_keys.clear_all();
for (uint i= 0 ; i < table->keys ; i++)
{
if (table->key_info[i].algorithm == HA_KEY_ALG_BTREE)
btree_keys.set_bit(i);
}
}
return (file ? 0 : 1);
}