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added some comments

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bell@sanja.is.com.ua
2002-03-16 10:36:27 +02:00
parent 50d514b67d
commit c92df13c84
2 changed files with 8 additions and 4 deletions
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5
sql/sql_class.h
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@ -473,7 +473,10 @@ public:
} }
}; };
/*
Used to hold information about file and file structure in exchainge
via non-DB file (...INTO OUTFILE..., ...LOAD DATA...)
*/
class sql_exchange :public Sql_alloc class sql_exchange :public Sql_alloc
{ {
public: public:

7
sql/table.h
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@ -111,7 +111,7 @@ struct st_table {
char *table_name,*real_name,*path; char *table_name,*real_name,*path;
uint key_length; /* Length of key */ uint key_length; /* Length of key */
uint tablenr,used_fields,null_bytes; uint tablenr,used_fields,null_bytes;
table_map map; table_map map; /* ID bit of table (1,2,4,8,16...) */
ulong version,flush_version; ulong version,flush_version;
uchar *null_flags; uchar *null_flags;
IO_CACHE *io_cache; /* If sorted trough file*/ IO_CACHE *io_cache; /* If sorted trough file*/
@ -139,13 +139,14 @@ typedef struct st_table_list {
char *db,*name,*real_name; char *db,*name,*real_name;
Item *on_expr; /* Used with outer join */ Item *on_expr; /* Used with outer join */
struct st_table_list *natural_join; /* natural join on this table*/ struct st_table_list *natural_join; /* natural join on this table*/
List<String> *use_index,*ignore_index; /* ... join ... USE INDEX ... IGNORE INDEX */
List<String> *use_index,*ignore_index;
TABLE *table; TABLE *table;
GRANT_INFO grant; GRANT_INFO grant;
thr_lock_type lock_type; thr_lock_type lock_type;
uint outer_join; /* Which join type */ uint outer_join; /* Which join type */
bool straight; /* optimize with prev table */ bool straight; /* optimize with prev table */
bool updating; /* for replicate-do/ignore table */ bool updating; /* for replicate-do/ignore table */
bool shared; /* Used twice in union */ bool shared; /* Used twice in union */
} TABLE_LIST; } TABLE_LIST;