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cleanup: remove TABLE::vcol_set

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use a read_set instead. a bit in the read_set means "the field
value is needed" (read or generated, whatever it takes).
This commit is contained in:
Sergei Golubchik
2018-06-01 16:59:21 +02:00
parent ac9cc63892
commit 45dee3fc83
22 changed files with 95 additions and 219 deletions
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4
sql/sql_lex.cc
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@ -4360,7 +4360,7 @@ void SELECT_LEX::update_used_tables()
tab->covering_keys= tab->s->keys_for_keyread;
tab->covering_keys.intersect(tab->keys_in_use_for_query);
/*
View/derived was merged. Need to recalculate read_set/vcol_set
View/derived was merged. Need to recalculate read_set
bitmaps here. For example:
CREATE VIEW v1 AS SELECT f1,f2,f3 FROM t1;
SELECT f1 FROM v1;
@ -4369,8 +4369,6 @@ void SELECT_LEX::update_used_tables()
be in the read_set.
*/
bitmap_clear_all(tab->read_set);
if (tab->vcol_set)
bitmap_clear_all(tab->vcol_set);
break;
}
}