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MDEV-10172: UNION query returns incorrect rows outside conditional evaluation

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count duplicate of UNION SELECT separately to awoid influence on lokal LIMIT clause.
This commit is contained in:
Oleksandr Byelkin
2016-12-20 10:25:25 +01:00
parent f23b41b9b8
commit aaff3d6c35
4 changed files with 61 additions and 12 deletions
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5
sql/sql_select.h
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@ -1018,7 +1018,8 @@ public:
table_map outer_join;
/* Bitmap of tables used in the select list items */
table_map select_list_used_tables;
ha_rows send_records,found_records,examined_rows,row_limit, select_limit;
ha_rows send_records, found_records, examined_rows,
row_limit, select_limit, duplicate_rows;
/**
Used to fetch no more than given amount of rows per one
fetch operation of server side cursor.
@ -1272,7 +1273,7 @@ public:
sort_and_group= 0;
first_record= 0;
do_send_rows= 1;
send_records= 0;
duplicate_rows= send_records= 0;
found_records= 0;
fetch_limit= HA_POS_ERROR;
examined_rows= 0;