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fixed BUG#1180 (changing WHERE clause of prepared statements by optimisation)

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sql/item.h:
  constructor and method for aloning AND/OR structure of WHERE clause
sql/item_cmpfunc.cc:
  constructor and method for aloning AND/OR structure of WHERE clause
sql/item_cmpfunc.h:
  constructor and method for aloning AND/OR structure of WHERE clause
sql/item_func.cc:
  constructor for aloning AND/OR structure of WHERE clause
sql/item_func.h:
  constructor for aloning AND/OR structure of WHERE clause
sql/sql_lex.cc:
  field for saving WHERE root
sql/sql_lex.h:
  field for saving WHERE root
sql/sql_prepare.cc:
  saving WHERE root
  creating new AND/OR structure before executing prepared statement
tests/client_test.c:
  test suite for bug #1180
This commit is contained in:
unknown 2003-09-02 19:56:55 +03:00
commit 2d7b489876
9 changed files with 186 additions and 7 deletions
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80
tests/client_test.c
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@ -1839,6 +1839,85 @@ session_id char(9) NOT NULL, \
mysql_stmt_close(stmt);
}
/*
test BUG#1180 (optimized away part of WHERE clause)
*/
static void test_bug1180()
{
MYSQL_STMT *stmt;
int rc;
MYSQL_BIND bind[1];
ulong length[1];
char szData[11];
int nData=1;
myheader("test_select_bug");
rc = mysql_query(mysql,"DROP TABLE IF EXISTS test_select");
myquery(rc);
rc = mysql_query(mysql,"CREATE TABLE test_select(session_id char(9) NOT NULL)");
myquery(rc);
rc = mysql_query(mysql,"INSERT INTO test_select VALUES (\"abc\")");
myquery(rc);
strmov(query,"SELECT * FROM test_select WHERE ?=\"1111\" and session_id = \"abc\"");
stmt = mysql_prepare(mysql, query, strlen(query));
mystmt_init(stmt);
verify_param_count(stmt,1);
strmov(szData,(char *)"abc");
bind[0].buffer_type=FIELD_TYPE_STRING;
bind[0].buffer=(char *)szData;
bind[0].buffer_length= 10;
bind[0].length= &length[0];
length[0]= 3;
bind[0].is_null=0;
rc = mysql_bind_param(stmt,bind);
mystmt(stmt, rc);
rc = mysql_execute(stmt);
mystmt(stmt, rc);
myassert(my_process_stmt_result(stmt) == 0);
strmov(szData,(char *)"1111");
bind[0].buffer_type=FIELD_TYPE_STRING;
bind[0].buffer=(char *)szData;
bind[0].buffer_length= 10;
bind[0].length= &length[0];
length[0]= 4;
bind[0].is_null=0;
rc = mysql_bind_param(stmt,bind);
mystmt(stmt, rc);
rc = mysql_execute(stmt);
mystmt(stmt, rc);
myassert(my_process_stmt_result(stmt) == 1);
strmov(szData,(char *)"abc");
bind[0].buffer_type=FIELD_TYPE_STRING;
bind[0].buffer=(char *)szData;
bind[0].buffer_length= 10;
bind[0].length= &length[0];
length[0]= 3;
bind[0].is_null=0;
rc = mysql_bind_param(stmt,bind);
mystmt(stmt, rc);
rc = mysql_execute(stmt);
mystmt(stmt, rc);
myassert(my_process_stmt_result(stmt) == 0);
mysql_stmt_close(stmt);
}
/********************************************************
* to test simple select show *
*********************************************************/
@ -7898,6 +7977,7 @@ int main(int argc, char **argv)
test_sqlmode(); /* test for SQL_MODE */
test_ts(); /* test for timestamp BR#819 */
test_bug1115(); /* BUG#1115 */
test_bug1180(); /* BUG#1180 */
end_time= time((time_t *)0);
total_time+= difftime(end_time, start_time);