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Merge 4.1 -> 5.0

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This commit is contained in:
pem@mysql.com
2004-05-07 18:52:06 +02:00
parent e1182c5226 df8e3eac45
commit bf45960eef
2201 changed files with 519910 additions and 8438 deletions
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95
sql/sql_update.cc
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@ -70,8 +70,6 @@ int mysql_update(THD *thd,
READ_RECORD info;
TABLE_LIST *update_table_list= ((TABLE_LIST*)
thd->lex->select_lex.table_list.first);
TABLE_LIST tables;
List<Item> all_fields;
DBUG_ENTER("mysql_update");
LINT_INIT(used_index);
@ -86,30 +84,13 @@ int mysql_update(THD *thd,
/* Calculate "table->used_keys" based on the WHERE */
table->used_keys=table->keys_in_use;
table->quick_keys.clear_all();
#ifndef NO_EMBEDDED_ACCESS_CHECKS
want_privilege=table->grant.want_privilege;
table->grant.want_privilege=(SELECT_ACL & ~table->grant.privilege);
want_privilege= table->grant.want_privilege;
#endif
bzero((char*) &tables,sizeof(tables)); // For ORDER BY
tables.table= table;
tables.alias= table_list->alias;
if (setup_tables(update_table_list) ||
setup_conds(thd,update_table_list,&conds) ||
thd->lex->select_lex.setup_ref_array(thd, order_num) ||
setup_order(thd, thd->lex->select_lex.ref_pointer_array,
&tables, all_fields, all_fields, order) ||
setup_ftfuncs(&thd->lex->select_lex))
DBUG_RETURN(-1); /* purecov: inspected */
/* Check that we are not using table that we are updating in a sub select */
if (find_real_table_in_list(table_list->next,
table_list->db, table_list->real_name))
{
my_error(ER_UPDATE_TABLE_USED, MYF(0), table_list->real_name);
DBUG_RETURN(-1);
}
if ((error= mysql_prepare_update(thd, table_list, update_table_list,
&conds, order_num, order)))
DBUG_RETURN(error);
old_used_keys= table->used_keys; // Keys used in WHERE
/*
@ -420,6 +401,59 @@ err:
DBUG_RETURN(-1);
}
/*
Prepare items in UPDATE statement
SYNOPSIS
mysql_prepare_update()
thd - thread handler
table_list - global table list
update_table_list - local table list of UPDATE SELECT_LEX
conds - conditions
order_num - number of ORDER BY list entries
order - ORDER BY clause list
RETURN VALUE
0 - OK
1 - error (message is sent to user)
-1 - error (message is not sent to user)
*/
int mysql_prepare_update(THD *thd, TABLE_LIST *table_list,
TABLE_LIST *update_table_list,
Item **conds, uint order_num, ORDER *order)
{
TABLE *table= table_list->table;
TABLE_LIST tables;
List<Item> all_fields;
DBUG_ENTER("mysql_prepare_update");
#ifndef NO_EMBEDDED_ACCESS_CHECKS
table->grant.want_privilege= (SELECT_ACL & ~table->grant.privilege);
#endif
bzero((char*) &tables,sizeof(tables)); // For ORDER BY
tables.table= table;
tables.alias= table_list->alias;
if (setup_tables(update_table_list) ||
setup_conds(thd, update_table_list, conds) ||
thd->lex->select_lex.setup_ref_array(thd, order_num) ||
setup_order(thd, thd->lex->select_lex.ref_pointer_array,
update_table_list, all_fields, all_fields, order) ||
setup_ftfuncs(&thd->lex->select_lex))
DBUG_RETURN(-1);
/* Check that we are not using table that we are updating in a sub select */
if (find_real_table_in_list(table_list->next,
table_list->db, table_list->real_name))
{
my_error(ER_UPDATE_TABLE_USED, MYF(0), table_list->real_name);
DBUG_RETURN(-1);
}
DBUG_RETURN(0);
}
/***************************************************************************
Update multiple tables from join
@ -441,6 +475,7 @@ int mysql_multi_update(THD *thd,
int res;
multi_update *result;
TABLE_LIST *tl;
TABLE_LIST *update_list= (TABLE_LIST*) thd->lex->select_lex.table_list.first;
table_map item_tables= 0, derived_tables= 0;
DBUG_ENTER("mysql_multi_update");
@ -453,7 +488,7 @@ int mysql_multi_update(THD *thd,
Ensure that we have update privilege for all tables and columns in the
SET part
*/
for (tl= table_list ; tl ; tl=tl->next)
for (tl= update_list; tl; tl= tl->next)
{
TABLE *table= tl->table;
/*
@ -470,14 +505,14 @@ int mysql_multi_update(THD *thd,
{
// Assign table map values to check updatability of derived tables
uint tablenr=0;
for (TABLE_LIST *table_list= (TABLE_LIST*) select_lex->table_list.first;
for (TABLE_LIST *table_list= update_list;
table_list;
table_list= table_list->next, tablenr++)
{
table_list->table->map= (table_map) 1 << tablenr;
}
}
if (setup_fields(thd, 0, table_list, *fields, 1, 0, 0))
if (setup_fields(thd, 0, update_list, *fields, 1, 0, 0))
DBUG_RETURN(-1);
if (thd->lex->derived_tables)
{
@ -493,7 +528,7 @@ int mysql_multi_update(THD *thd,
/*
Count tables and setup timestamp handling
*/
for (tl= select_lex->get_table_list() ; tl ; tl= tl->next)
for (tl= update_list; tl; tl= tl->next)
{
TABLE *table= tl->table;
@ -510,7 +545,7 @@ int mysql_multi_update(THD *thd,
if (thd->lex->derived_tables && (item_tables & derived_tables))
{
// find derived table which cause error
for (tl= select_lex->get_table_list() ; tl ; tl= tl->next)
for (tl= update_list; tl; tl= tl->next)
{
if (tl->derived && (item_tables & tl->table->map))
{
@ -521,7 +556,7 @@ int mysql_multi_update(THD *thd,
}
}
if (!(result=new multi_update(thd, table_list, fields, values,
if (!(result=new multi_update(thd, update_list, fields, values,
handle_duplicates)))
DBUG_RETURN(-1);