diff options
Diffstat (limited to 'storage')
| -rw-r--r-- | storage/myisam/ft_stopwords.c | 4 | ||||
| -rw-r--r-- | storage/myisam/mi_check.c | 90 |
2 files changed, 92 insertions, 2 deletions
diff --git a/storage/myisam/ft_stopwords.c b/storage/myisam/ft_stopwords.c index e8d81cbbbb1..a9814af220b 100644 --- a/storage/myisam/ft_stopwords.c +++ b/storage/myisam/ft_stopwords.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2000-2005 MySQL AB +/* Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -16,7 +16,7 @@ /* Written by Sergei A. Golubchik, who has a shared copyright to this code */ #include "ftdefs.h" -#include "my_handler.h" +#include "my_compare.h" static CHARSET_INFO *ft_stopword_cs= NULL; diff --git a/storage/myisam/mi_check.c b/storage/myisam/mi_check.c index 5d8a7c3daef..af50ac27c96 100644 --- a/storage/myisam/mi_check.c +++ b/storage/myisam/mi_check.c @@ -80,6 +80,7 @@ static SORT_KEY_BLOCKS *alloc_key_blocks(MI_CHECK *param, uint blocks, uint buffer_length); static ha_checksum mi_byte_checksum(const uchar *buf, uint length); static void set_data_file_type(SORT_INFO *sort_info, MYISAM_SHARE *share); +static HA_KEYSEG *ha_find_null(HA_KEYSEG *keyseg, uchar *a); void myisamchk_init(MI_CHECK *param) { @@ -4729,3 +4730,92 @@ set_data_file_type(SORT_INFO *sort_info, MYISAM_SHARE *share) share->delete_record=tmp.delete_record; } } + +/* + Find the first NULL value in index-suffix values tuple + + SYNOPSIS + ha_find_null() + keyseg Array of keyparts for key suffix + a Key suffix value tuple + + DESCRIPTION + Find the first NULL value in index-suffix values tuple. + + TODO + Consider optimizing this function or its use so we don't search for + NULL values in completely NOT NULL index suffixes. + + RETURN + First key part that has NULL as value in values tuple, or the last key + part (with keyseg->type==HA_TYPE_END) if values tuple doesn't contain + NULLs. +*/ + +static HA_KEYSEG *ha_find_null(HA_KEYSEG *keyseg, uchar *a) +{ + for (; (enum ha_base_keytype) keyseg->type != HA_KEYTYPE_END; keyseg++) + { + uchar *end; + if (keyseg->null_bit) + { + if (!*a++) + return keyseg; + } + end= a+ keyseg->length; + + switch ((enum ha_base_keytype) keyseg->type) { + case HA_KEYTYPE_TEXT: + case HA_KEYTYPE_BINARY: + case HA_KEYTYPE_BIT: + if (keyseg->flag & HA_SPACE_PACK) + { + int a_length; + get_key_length(a_length, a); + a += a_length; + break; + } + else + a= end; + break; + case HA_KEYTYPE_VARTEXT1: + case HA_KEYTYPE_VARTEXT2: + case HA_KEYTYPE_VARBINARY1: + case HA_KEYTYPE_VARBINARY2: + { + int a_length; + get_key_length(a_length, a); + a+= a_length; + break; + } + case HA_KEYTYPE_NUM: + if (keyseg->flag & HA_SPACE_PACK) + { + int alength= *a++; + end= a+alength; + } + a= end; + break; + case HA_KEYTYPE_INT8: + case HA_KEYTYPE_SHORT_INT: + case HA_KEYTYPE_USHORT_INT: + case HA_KEYTYPE_LONG_INT: + case HA_KEYTYPE_ULONG_INT: + case HA_KEYTYPE_INT24: + case HA_KEYTYPE_UINT24: +#ifdef HAVE_LONG_LONG + case HA_KEYTYPE_LONGLONG: + case HA_KEYTYPE_ULONGLONG: +#endif + case HA_KEYTYPE_FLOAT: + case HA_KEYTYPE_DOUBLE: + a= end; + break; + case HA_KEYTYPE_END: /* purecov: inspected */ + /* keep compiler happy */ + DBUG_ASSERT(0); + break; + } + } + return keyseg; +} |