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Port of cursors to be pushed into 5.0 tree:

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- client side part is simple and may be considered stable
- server side part now just joggles with THD state to save execution
  state and has no additional locking wisdom.
  Lot's of it are to be rewritten.
This commit is contained in:
konstantin@mysql.com
2004-08-03 03:32:21 -07:00
parent 7e6bade23b
commit d3e520ce7e
31 changed files with 1091 additions and 150 deletions
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14
sql/sql_class.cc
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@ -675,7 +675,8 @@ int THD::send_explain_fields(select_result *result)
item->maybe_null=1;
field_list.push_back(new Item_return_int("rows",10, MYSQL_TYPE_LONGLONG));
field_list.push_back(new Item_empty_string("Extra",255));
return (result->send_fields(field_list,1));
return (result->send_fields(field_list,
Protocol::SEND_NUM_ROWS | Protocol::SEND_EOF));
}
#ifdef SIGNAL_WITH_VIO_CLOSE
@ -722,9 +723,9 @@ sql_exchange::sql_exchange(char *name,bool flag)
escaped= &default_escaped;
}
bool select_send::send_fields(List<Item> &list,uint flag)
bool select_send::send_fields(List<Item> &list, uint flags)
{
return thd->protocol->send_fields(&list,flag);
return thd->protocol->send_fields(&list, flags);
}
/* Send data to client. Returns 0 if ok */
@ -1354,7 +1355,8 @@ Statement::Statement(THD *thd)
allow_sum_func(0),
lex(&main_lex),
query(0),
query_length(0)
query_length(0),
cursor(0)
{
name.str= NULL;
}
@ -1372,7 +1374,8 @@ Statement::Statement()
allow_sum_func(0), /* initialized later */
lex(&main_lex),
query(0), /* these two are set */
query_length(0) /* in alloc_query() */
query_length(0), /* in alloc_query() */
cursor(0)
{
}
@ -1391,6 +1394,7 @@ void Statement::set_statement(Statement *stmt)
lex= stmt->lex;
query= stmt->query;
query_length= stmt->query_length;
cursor= stmt->cursor;
}