diff options
Diffstat (limited to 'sql/unireg.h')
| -rw-r--r-- | sql/unireg.h | 39 |
1 files changed, 34 insertions, 5 deletions
diff --git a/sql/unireg.h b/sql/unireg.h index 232ea5e70e7..c4e53160d74 100644 --- a/sql/unireg.h +++ b/sql/unireg.h @@ -153,11 +153,40 @@ #define OPEN_VIEW 8192 /* Allow open on view */ #define OPEN_VIEW_NO_PARSE 16384 /* Open frm only if it's a view, but do not parse view itself */ -#define OPEN_FRM_FILE_ONLY 32768 /* Open frm file only */ -#define OPEN_TABLE_ONLY OPEN_FRM_FILE_ONLY*2 /* Open view only */ -#define OPEN_VIEW_ONLY OPEN_TABLE_ONLY*2 /* Open table only */ -#define OPEN_TABLE_FROM_SHARE OPEN_VIEW_ONLY*2 /* For I_S tables*/ -#define OPTIMIZE_I_S_TABLE OPEN_TABLE_FROM_SHARE*2 /* For I_S tables*/ +/* + This flag is used in function get_all_tables() which fills + I_S tables with data which are retrieved from frm files and storage engine + The flag means that we need to open FRM file only to get necessary data. +*/ +#define OPEN_FRM_FILE_ONLY 32768 +/* + This flag is used in function get_all_tables() which fills + I_S tables with data which are retrieved from frm files and storage engine + The flag means that we need to process tables only to get necessary data. + Views are not processed. +*/ +#define OPEN_TABLE_ONLY OPEN_FRM_FILE_ONLY*2 +/* + This flag is used in function get_all_tables() which fills + I_S tables with data which are retrieved from frm files and storage engine + The flag means that we need to process views only to get necessary data. + Tables are not processed. +*/ +#define OPEN_VIEW_ONLY OPEN_TABLE_ONLY*2 +/* + This flag is used in function get_all_tables() which fills + I_S tables with data which are retrieved from frm files and storage engine. + The flag means that we need to open a view using + open_normal_and_derived_tables() function. +*/ +#define OPEN_VIEW_FULL OPEN_VIEW_ONLY*2 +/* + This flag is used in function get_all_tables() which fills + I_S tables with data which are retrieved from frm files and storage engine. + The flag means that I_S table uses optimization algorithm. +*/ +#define OPTIMIZE_I_S_TABLE OPEN_VIEW_FULL*2 + #define SC_INFO_LENGTH 4 /* Form format constant */ #define TE_INFO_LENGTH 3 #define MTYP_NOEMPTY_BIT 128 |