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A fix and a test case for Bug#9520 "SELECT DISTINCT crashes server

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with cursor". The patch refactors do_select/sub_select
functions, which implement the nested loop algorithm, and reuses them to
fetch rows for cursors as well.
Pushing with view.test failing (--ps-protocol).
This commit is contained in:
konstantin@mysql.com
2005-04-30 09:54:35 +04:00
parent f35c1a1874
commit 6040b0abf6
4 changed files with 456 additions and 360 deletions
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sql/sql_prepare.cc
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@@ -2223,7 +2223,7 @@ void mysql_stmt_fetch(THD *thd, char *packet, uint packet_length)
my_pthread_setprio(pthread_self(), QUERY_PRIOR);
thd->protocol= &thd->protocol_prep; // Switch to binary protocol
(void) stmt->cursor->fetch(num_rows);
stmt->cursor->fetch(num_rows);
thd->protocol= &thd->protocol_simple; // Use normal protocol
if (!(specialflag & SPECIAL_NO_PRIOR))