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fix for the bug #2419: order by ignores rows.

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null_ref_key moved to TABLE_REF.
new null range created if necessary.
This commit is contained in:
ram@gw.mysql.r18.ru
2004-01-31 10:04:16 +04:00
parent d4d097689b
commit 6fab168a63
6 changed files with 65 additions and 12 deletions
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3
sql/sql_select.h
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@@ -46,6 +46,8 @@ typedef struct st_table_ref
store_key **key_copy; //
Item **items; // val()'s for each keypart
table_map depend_map; // Table depends on these tables.
byte *null_ref_key; // null byte position in the key_buf.
// used for REF_OR_NULL optimization.
} TABLE_REF;
/*
@@ -88,7 +90,6 @@ typedef struct st_join_table {
QUICK_SELECT *quick;
Item *on_expr;
const char *info;
byte *null_ref_key;
int (*read_first_record)(struct st_join_table *tab);
int (*next_select)(JOIN *,struct st_join_table *,bool);
READ_RECORD read_record;