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| author | Eugene Kosov <claprix@yandex.ru> | 2019-06-14 12:18:49 +0300 |
|---|---|---|
| committer | Eugene Kosov <claprix@yandex.ru> | 2019-06-22 14:09:12 +0300 |
| commit | 854c219a7f0e1878517d5a821992f650342380dd (patch) | |
| tree | 440110d59938760ecf3fe47f9298967c1805e873 /sql/sql_priv.h | |
| parent | 72d3676fe5608d29c1200386de8a2ef4ecfe15b3 (diff) | |
| download | mariadb-git-854c219a7f0e1878517d5a821992f650342380dd.tar.gz | |
MDEV-17301 Change of COLLATE unnecessarily requires ALGORITHM=COPY
Patch is about two cases:
1) On some collate changes it's possible to rebuild only secondary indexes
2) For non-indexed columns collate can be changed INSTANTly
Implemented mostly in Field_{string,varstring,blob}::is_equal().
Make this method return how exactly collationa differs.
This information is later used by fill_alter_inplace_info() to pass
correct info to engine.
Diffstat (limited to 'sql/sql_priv.h')
| -rw-r--r-- | sql/sql_priv.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sql/sql_priv.h b/sql/sql_priv.h index 0d1c9881c17..0b06985f431 100644 --- a/sql/sql_priv.h +++ b/sql/sql_priv.h @@ -354,6 +354,14 @@ data dictionary without changing table rows */ #define IS_EQUAL_PACK_LENGTH 2 +/** + charsets are the same or compatible, collates are the same, the rest is equal +*/ +#define IS_EQUAL_WITH_REINTERPRET_COMPATIBLE_CHARSET 3 +/** + charsets are the same or compatible, collates are different, the rest is equal +*/ +#define IS_EQUAL_WITH_REINTERPRET_COMPATIBLE_CHARSET_BUT_COLLATE 4 enum enum_parsing_place { |