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Bug#7806 - insert on duplicate key and auto-update of timestamp

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Modified the check for the timestamp field so that the flags for
the automatic for inserts and updates are cleared independently.


mysql-test/r/type_timestamp.result:
  Bug#7806 - insert on duplicate key and auto-update of timestamp
  The test result.
mysql-test/t/type_timestamp.test:
  Bug#7806 - insert on duplicate key and auto-update of timestamp
  The test case.
sql/mysql_priv.h:
  Bug#7806 - insert on duplicate key and auto-update of timestamp
  Made check_insert_fields() static. It is used only in sql_insert.cc.
sql/sql_insert.cc:
  Bug#7806 - insert on duplicate key and auto-update of timestamp
  Modified the check of the insert fields so that an explicit
  assignment of the timestamp field does only disable the automatic
  for inserts and retains the automatic for updates.
  Added a check if the update fields contain the timestamp field.
  In this case, the automatic on update is disabled, but not the
  automatic on insert. This is called from mysql_prepare_insert().
sql/table.h:
  Bug#7806 - insert on duplicate key and auto-update of timestamp
  Extended a comment to warn about usage of enum timestamp_auto_set_type.
This commit is contained in:
unknown
2005-04-19 15:12:32 +02:00
parent 92a00143d7
commit 3be2d4897e
5 changed files with 154 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

94
sql/sql_insert.cc
View File

@ -42,15 +42,29 @@ static void unlink_blobs(register TABLE *table);
#define DELAYED_LOG_UPDATE 1
#define DELAYED_LOG_BIN 2
/*
Check if insert fields are correct.
Sets table->timestamp_field_type to TIMESTAMP_NO_AUTO_SET or leaves it
as is, depending on if timestamp should be updated or not.
SYNOPSIS
check_insert_fields()
thd The current thread.
table The table for insert.
fields The insert fields.
values The insert values.
NOTE
Clears TIMESTAMP_AUTO_SET_ON_INSERT from table->timestamp_field_type
or leaves it as is, depending on if timestamp should be updated or
not.
RETURN
0 OK
-1 Error
*/
int
check_insert_fields(THD *thd,TABLE *table,List<Item> &fields,
List<Item> &values, ulong counter)
static int check_insert_fields(THD *thd, TABLE *table, List<Item> &fields,
List<Item> &values)
{
if (fields.elements == 0 && values.elements != 0)
{
@ -58,7 +72,7 @@ check_insert_fields(THD *thd,TABLE *table,List<Item> &fields,
{
my_printf_error(ER_WRONG_VALUE_COUNT_ON_ROW,
ER(ER_WRONG_VALUE_COUNT_ON_ROW),
MYF(0),counter);
MYF(0), 1);
return -1;
}
#ifndef NO_EMBEDDED_ACCESS_CHECKS
@ -66,7 +80,7 @@ check_insert_fields(THD *thd,TABLE *table,List<Item> &fields,
check_grant_all_columns(thd,INSERT_ACL,table))
return -1;
#endif
table->timestamp_field_type= TIMESTAMP_NO_AUTO_SET;
(int) table->timestamp_field_type&= ~ (int) TIMESTAMP_AUTO_SET_ON_INSERT;
}
else
{ // Part field list
@ -74,7 +88,7 @@ check_insert_fields(THD *thd,TABLE *table,List<Item> &fields,
{
my_printf_error(ER_WRONG_VALUE_COUNT_ON_ROW,
ER(ER_WRONG_VALUE_COUNT_ON_ROW),
MYF(0),counter);
MYF(0), 1);
return -1;
}
TABLE_LIST table_list;
@ -96,7 +110,7 @@ check_insert_fields(THD *thd,TABLE *table,List<Item> &fields,
}
if (table->timestamp_field && // Don't set timestamp if used
table->timestamp_field->query_id == thd->query_id)
table->timestamp_field_type= TIMESTAMP_NO_AUTO_SET;
(int) table->timestamp_field_type&= ~ (int) TIMESTAMP_AUTO_SET_ON_INSERT;
}
// For the values we need select_priv
#ifndef NO_EMBEDDED_ACCESS_CHECKS
@ -106,6 +120,62 @@ check_insert_fields(THD *thd,TABLE *table,List<Item> &fields,
}
/*
Check update fields for the timestamp field.
SYNOPSIS
check_update_fields()
thd The current thread.
insert_table_list The insert table list.
table The table for update.
update_fields The update fields.
NOTE
If the update fields include the timestamp field,
remove TIMESTAMP_AUTO_SET_ON_UPDATE from table->timestamp_field_type.
RETURN
0 OK
-1 Error
*/
static int check_update_fields(THD *thd, TABLE *table,
TABLE_LIST *insert_table_list,
List<Item> &update_fields)
{
ulong timestamp_query_id;
LINT_INIT(timestamp_query_id);
/*
Change the query_id for the timestamp column so that we can
check if this is modified directly.
*/
if (table->timestamp_field)
{
timestamp_query_id= table->timestamp_field->query_id;
table->timestamp_field->query_id= thd->query_id-1;
}
/*
Check the fields we are going to modify. This will set the query_id
of all used fields to the threads query_id.
*/
if (setup_fields(thd, 0, insert_table_list, update_fields, 1, 0, 0))
return -1;
if (table->timestamp_field)
{
/* Don't set timestamp column if this is modified. */
if (table->timestamp_field->query_id == thd->query_id)
(int) table->timestamp_field_type&= ~ (int) TIMESTAMP_AUTO_SET_ON_UPDATE;
else
table->timestamp_field->query_id= timestamp_query_id;
}
return 0;
}
int mysql_insert(THD *thd,TABLE_LIST *table_list,
List<Item> &fields,
List<List_item> &values_list,
@ -450,11 +520,11 @@ int mysql_prepare_insert(THD *thd, TABLE_LIST *table_list,
if (!table->insert_values)
DBUG_RETURN(-1);
}
if ((values && check_insert_fields(thd, table, fields, *values, 1)) ||
if ((values && check_insert_fields(thd, table, fields, *values)) ||
setup_tables(insert_table_list) ||
(values && setup_fields(thd, 0, insert_table_list, *values, 0, 0, 0)) ||
(duplic == DUP_UPDATE &&
(setup_fields(thd, 0, insert_table_list, update_fields, 1, 0, 0) ||
(check_update_fields(thd, table, insert_table_list, update_fields) ||
setup_fields(thd, 0, insert_table_list, update_values, 1, 0, 0))))
DBUG_RETURN(-1);
if (values && find_real_table_in_list(table_list->next, table_list->db,
@ -1457,7 +1527,7 @@ select_insert::prepare(List<Item> &values, SELECT_LEX_UNIT *u)
DBUG_ENTER("select_insert::prepare");
unit= u;
if (check_insert_fields(thd,table,*fields,values,1))
if (check_insert_fields(thd, table, *fields, values))
DBUG_RETURN(1);
restore_record(table,default_values); // Get empty record