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fixed subquery in the FROM clause with parameter (BUG#3020)

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This commit is contained in:
bell@sanja.is.com.ua
2004-04-08 23:28:47 +03:00
parent d4f5f1b7ac
commit ef5f15c351
2 changed files with 82 additions and 28 deletions
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8
sql/sql_derived.cc
View File

@@ -148,7 +148,12 @@ static int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit,
} }
derived_result->set_table(table); derived_result->set_table(table);
/*
if it is preparation PS only then we do not need real data and we
can skip execution (and parameters is not defined, too)
*/
if (!thd->current_statement)
{
if (is_union) if (is_union)
{ {
// execute union without clean up // execute union without clean up
@@ -179,6 +184,7 @@ static int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit,
SELECT_NO_UNLOCK), SELECT_NO_UNLOCK),
derived_result, unit, first_select); derived_result, unit, first_select);
} }
}
if (!res) if (!res)
{ {

48
tests/client_test.c
View File

@@ -8905,6 +8905,53 @@ static void test_bind_nagative()
myquery(rc); myquery(rc);
} }
static void test_derived()
{
MYSQL_STMT *stmt;
int rc, i;
MYSQL_BIND bind[1];
long my_val = 0L;
long my_length = 0L;
long my_null = 0L;
const char *query=
"select count(1) from (select f.id from t1 f where f.id=?) as x";
myheader("test_derived");
rc = mysql_query(mysql, "DROP TABLE IF EXISTS t1");
myquery(rc);
rc= mysql_query(mysql,"create table t1 (id int(8), primary key (id)) \
TYPE=InnoDB DEFAULT CHARSET=utf8");
myquery(rc);
rc= mysql_query(mysql, "insert into t1 values (1)");
myquery(rc);
stmt= mysql_prepare(mysql, query, strlen(query));
mystmt_init(stmt);
bind[0].buffer_type = FIELD_TYPE_LONG;
bind[0].buffer = (char *)&my_val;
bind[0].length = &my_length;
bind[0].is_null = (char*)&my_null;
my_val= 1;
rc= mysql_bind_param(stmt, bind);
mystmt(stmt,rc);
for (i= 0; i < 3; i++)
{
rc= mysql_execute(stmt);
mystmt(stmt, rc);
assert(1 == my_process_stmt_result(stmt));
}
mysql_stmt_close(stmt);
rc= mysql_query(mysql, "DROP TABLE t1");
myquery(rc);
}
/* /*
Read and parse arguments and MySQL options from my.cnf Read and parse arguments and MySQL options from my.cnf
*/ */
@@ -9172,6 +9219,7 @@ int main(int argc, char **argv)
test_multi(); /* test of multi delete & update */ test_multi(); /* test of multi delete & update */
test_insert_select(); /* test INSERT ... SELECT */ test_insert_select(); /* test INSERT ... SELECT */
test_bind_nagative(); /* bind negative to unsigned BUG#3223 */ test_bind_nagative(); /* bind negative to unsigned BUG#3223 */
test_derived(); /* derived table with parameter BUG#3020 */
end_time= time((time_t *)0); end_time= time((time_t *)0);
total_time+= difftime(end_time, start_time); total_time+= difftime(end_time, start_time);