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Bug #1064: SHOW CREATE TABLE: avoid allocations for simple tables, old client compatibility

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sql/item.h:
  fixups
sql/sql_show.cc:
  avoid allocations for simple tables
  old client compatibility
This commit is contained in:
unknown 2003-08-21 21:14:02 +02:00
parent 8b2bc4362c
commit b8de463ea1
2 changed files with 5 additions and 2 deletions
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1
sql/item.h
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@ -275,6 +275,7 @@ class Item_empty_string :public Item_string
public: public:
Item_empty_string(const char *header,uint length) :Item_string("",0) Item_empty_string(const char *header,uint length) :Item_string("",0)
{ name=(char*) header; max_length=length;} { name=(char*) header; max_length=length;}
void make_field(Send_field *field);
}; };
class Item_varbinary :public Item class Item_varbinary :public Item

6
sql/sql_show.cc
View File

@ -564,7 +564,8 @@ mysqld_show_create(THD *thd, TABLE_LIST *table_list)
DBUG_RETURN(1); DBUG_RETURN(1);
} }
String packet; char buff[1024];
String packet(buff,sizeof(buff));
packet.length(0); packet.length(0);
net_store_data(&packet, table->table_name); net_store_data(&packet, table->table_name);
/* /*
@ -597,7 +598,8 @@ mysqld_show_create(THD *thd, TABLE_LIST *table_list)
List<Item> field_list; List<Item> field_list;
field_list.push_back(new Item_empty_string("Table",NAME_LEN)); field_list.push_back(new Item_empty_string("Table",NAME_LEN));
field_list.push_back(new Item_empty_string("Create Table",packet.length())); field_list.push_back(new Item_empty_string("Create Table",
max(packet.length(),1024))); // 1024 is for not to confuse old clients
if (send_fields(thd,field_list,1)) if (send_fields(thd,field_list,1))
DBUG_RETURN(1); DBUG_RETURN(1);