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Added Innobase to source distribution

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monty@donna.mysql.com
2001-02-17 14:19:19 +02:00
parent 024e2f39c9
commit c533308a15
421 changed files with 170195 additions and 969 deletions
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71
sql/sql_update.cc
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@@ -20,23 +20,21 @@
#include "mysql_priv.h"
#include "sql_acl.h"
#define MAX_ULONG_BIT ((ulong) 1 << (sizeof(ulong)*8-1));
#define MAX_ULONG_BIT ((ulong) 1 << (sizeof(ulong)*8-1))
/* Return 0 if row hasn't changed */
static bool compare_record(TABLE *table)
static bool compare_record(TABLE *table, ulong query_id)
{
if (!table->blob_fields)
return cmp_record(table,1);
ulong current_query_id=current_thd->query_id;
if (memcmp(table->null_flags,
table->null_flags+table->rec_buff_length,
table->null_bytes))
return 1; // Diff in NULL value
for (Field **ptr=table->field ; *ptr ; ptr++)
{
if ((*ptr)->query_id == current_query_id &&
if ((*ptr)->query_id == query_id &&
(*ptr)->cmp_binary_offset(table->rec_buff_length))
return 1;
}
@@ -53,7 +51,8 @@ int mysql_update(THD *thd,TABLE_LIST *table_list,List<Item> &fields,
bool using_limit=limit != HA_POS_ERROR;
bool used_key_is_modified, using_transactions;
int error=0;
uint save_time_stamp, used_index;
uint save_time_stamp, used_index, want_privilege;
ulong query_id=thd->query_id, timestamp_query_id;
key_map old_used_keys;
TABLE *table;
SQL_SELECT *select;
@@ -67,35 +66,45 @@ int mysql_update(THD *thd,TABLE_LIST *table_list,List<Item> &fields,
table->file->info(HA_STATUS_VARIABLE | HA_STATUS_NO_LOCK);
thd->proc_info="init";
/*
** Find the offsets of the given fields and condition
*/
if (setup_fields(thd,table_list,fields,1,0))
DBUG_RETURN(-1);
table->grant.want_privilege=(SELECT_ACL & ~table->grant.privilege);
if (table->timestamp_field && // Don't set timestamp if used
table->timestamp_field->query_id == thd->query_id)
table->time_stamp=0;
/* Change query_id so that ->used_keys is based on the WHERE */
/* Calculate "table->used_keys" based on the WHERE */
table->used_keys=table->keys_in_use;
table->quick_keys=0;
ulong query_id=thd->query_id;
thd->query_id^= MAX_ULONG_BIT;
if (setup_fields(thd,table_list,values,0,0) ||
setup_conds(thd,table_list,&conds))
want_privilege=table->grant.want_privilege;
table->grant.want_privilege=(SELECT_ACL & ~table->grant.privilege);
if (setup_conds(thd,table_list,&conds))
DBUG_RETURN(-1); /* purecov: inspected */
old_used_keys=table->used_keys; // Keys used in WHERE
/*
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 */
table->grant.want_privilege=want_privilege;
if (setup_fields(thd,table_list,fields,1,0))
DBUG_RETURN(-1); /* purecov: inspected */
if (table->timestamp_field)
{
// Don't set timestamp column if this is modified
if (table->timestamp_field->query_id == thd->query_id)
table->time_stamp=0;
else
table->timestamp_field->query_id=timestamp_query_id;
}
/* Check values */
table->grant.want_privilege=(SELECT_ACL & ~table->grant.privilege);
if (setup_fields(thd,table_list,values,0,0))
{
table->time_stamp=save_time_stamp; // Restore timestamp pointer
DBUG_RETURN(-1); /* purecov: inspected */
}
old_used_keys=table->used_keys;
/* Restore query_id for compare_record */
thd->query_id=query_id;
List_iterator<Item> it(fields);
Item *item;
while ((item=it++))
((Item_field*) item)->field->query_id=query_id;
// Don't count on usage of 'only index' when calculating which key to use
table->used_keys=0;
@@ -141,6 +150,7 @@ int mysql_update(THD *thd,TABLE_LIST *table_list,List<Item> &fields,
** We can't update table directly; We must first search after all
** matching rows before updating the table!
*/
table->file->extra(HA_EXTRA_DONT_USE_CURSOR_TO_UPDATE);
IO_CACHE tempfile;
if (open_cached_file(&tempfile, mysql_tmpdir,TEMP_PREFIX,
DISK_BUFFER_SIZE, MYF(MY_WME)))
@@ -218,6 +228,7 @@ int mysql_update(THD *thd,TABLE_LIST *table_list,List<Item> &fields,
thd->count_cuted_fields=1; /* calc cuted fields */
thd->cuted_fields=0L;
thd->proc_info="updating";
query_id=thd->query_id;
while (!(error=info.read_record(&info)) && !thd->killed)
{
@@ -227,7 +238,7 @@ int mysql_update(THD *thd,TABLE_LIST *table_list,List<Item> &fields,
if (fill_record(fields,values))
break;
found++;
if (compare_record(table))
if (compare_record(table, query_id))
{
if (!(error=table->file->update_row((byte*) table->record[1],
(byte*) table->record[0])))