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Merge from mysql-5.0-bugteam.
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@ -16951,9 +16951,10 @@ static void bug20023_change_user(MYSQL *con)
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opt_db ? opt_db : "test"));
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}
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static my_bool query_int_variable(MYSQL *con,
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static my_bool query_str_variable(MYSQL *con,
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const char *var_name,
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int *var_value)
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char *str,
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size_t len)
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{
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MYSQL_RES *rs;
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MYSQL_ROW row;
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@ -16962,10 +16963,8 @@ static my_bool query_int_variable(MYSQL *con,
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my_bool is_null;
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my_snprintf(query_buffer,
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sizeof (query_buffer),
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"SELECT %s",
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(const char *) var_name);
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my_snprintf(query_buffer, sizeof (query_buffer),
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"SELECT %s", var_name);
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DIE_IF(mysql_query(con, query_buffer));
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DIE_UNLESS(rs= mysql_store_result(con));
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@ -16974,28 +16973,44 @@ static my_bool query_int_variable(MYSQL *con,
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is_null= row[0] == NULL;
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if (!is_null)
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*var_value= atoi(row[0]);
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my_snprintf(str, len, "%s", row[0]);
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mysql_free_result(rs);
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return is_null;
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}
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static my_bool query_int_variable(MYSQL *con,
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const char *var_name,
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int *var_value)
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{
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char str[32];
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my_bool is_null= query_str_variable(con, var_name, str, sizeof(str));
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if (!is_null)
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*var_value= atoi(str);
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return is_null;
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}
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static void test_bug20023()
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{
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MYSQL con;
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int sql_big_selects_orig;
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int max_join_size_orig;
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/*
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Type of max_join_size is ha_rows, which might be ulong or off_t
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depending on the platform or configure options. Preserve the string
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to avoid type overflow pitfalls.
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*/
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char max_join_size_orig[32];
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int sql_big_selects_2;
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int sql_big_selects_3;
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int sql_big_selects_4;
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int sql_big_selects_5;
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#if NOT_USED
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char query_buffer[MAX_TEST_QUERY_LENGTH];
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#endif
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/* Create a new connection. */
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@ -17018,9 +17033,10 @@ static void test_bug20023()
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"@@session.sql_big_selects",
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&sql_big_selects_orig);
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query_int_variable(&con,
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query_str_variable(&con,
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"@@global.max_join_size",
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&max_join_size_orig);
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max_join_size_orig,
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sizeof(max_join_size_orig));
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/***********************************************************************
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Test that COM_CHANGE_USER resets the SQL_BIG_SELECTS to the initial value.
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@ -17093,25 +17109,16 @@ static void test_bug20023()
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Check that SQL_BIG_SELECTS will be the original one.
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***********************************************************************/
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#if NOT_USED
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/*
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max_join_size is a ulong or better.
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my_snprintf() only goes up to ul.
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*/
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/* Restore MAX_JOIN_SIZE. */
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my_snprintf(query_buffer,
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sizeof (query_buffer),
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"SET @@global.max_join_size = %d",
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(int) max_join_size_orig);
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"SET @@global.max_join_size = %s",
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max_join_size_orig);
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DIE_IF(mysql_query(&con, query_buffer));
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#else
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DIE_IF(mysql_query(&con, "SET @@global.max_join_size = -1"));
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#endif
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DIE_IF(mysql_query(&con, "SET @@session.max_join_size = default"));
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/* Issue COM_CHANGE_USER. */
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