C#: Blowfish Encipher a single dword I'm translating a C++ TCP Client into C#.The client is used to encode 4 bytes of an array using blowfish. C++ Blowfish C# Blowfish(C# NET) C++ C# In the C++ code,when the line "Blowfish.Encode&qu... ...
For traditional EXPLAIN: output a single EXPLAIN row. Implemented inExplain_format_JSON,Explain_format_traditional, andExplain_format_tree. bool Explain_format::is_explain_for_schema()const inline Whether the EXPLAIN statement should be run in another schema than the current active schema. ...
itknows that can never be NULL, and does not scan through the rest of the rowsin t2 that have the same id value. In other words, for each row in t1, MySQLneeds to do only a single lookup in t2, regardless
-> Single-row index lookup on i using PRIMARY (id=orders.item_id) (cost=0.25 rows=1) The TREE format, while compact and easy to read and understand for a human reader, would require manual parsing to analyze in code. With EXPLAIN FORMAT=JSON you can get a JSON object instead, which ...
Method for looking up a single key value via a unique index. always returns a single value, You must supply AT LEAST the leading column of the index to access data via the index. index range scan --索引局部扫描 Index range scan is a method for accessing a range values of a particular...
(Even if it was a single function call * originally, the optimizer could have simplified it away.) */ if (list_length(fscan->functions) == 1) { RangeTblFunction *rtfunc = (RangeTblFunction *) linitial(fscan->functions); if (IsA(rtfunc->funcexpr, FuncExpr)) { FuncExpr *funcexpr...
*** 1. row*** id: 1 select_type: SIMPLE table: user type: ALL possible_keys: NULL key: NULL key_len: NULL ref: NULL rows: 7 Extra: Using where 1 row in set (0.00 sec) 一.OptimizingQueries with EXPLAIN The EXPLAINstatement can be used either ...
REPLICATE –Copies the row data to all workers. Distributed Exchange types The following exchange types indicate the layout of the data when they are exchanged between nodes in a distributed plan. HASH –The exchange distributes data to multiple destinations using a hash function. SINGLE –The exc...
Method for looking up a single key value via a unique index. always returns a single value, You must supply AT LEAST the leading column of the index to access data via the index. index range scan --索引局部扫描 Index range scan is a method for accessing a range values of a particular...
Update and delete operations that use an index scan on acolumn-organizedtable are not supported by the FETCH operator. Update and delete operations that affect only a single row are supported by using either index-only access or the nested-loop fetch approach. ...