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ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网移动版 - 专注C++内核技术
...tialize方法前,需要手动释放所有的全局或者静态变量。
如何手动释放呢:
设置指针指向NULL
调用Release方法,注意是要调用智能指针的Release方法,而不是内部指针的,指针指针的Release方法,会调用内部指针的Relase,然后设...
ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...tialize方法前,需要手动释放所有的全局或者静态变量。
如何手动释放呢:
设置指针指向NULL
调用Release方法,注意是要调用智能指针的Release方法,而不是内部指针的,指针指针的Release方法,会调用内部指针的Relase,然后设...
ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...tialize方法前,需要手动释放所有的全局或者静态变量。
如何手动释放呢:
设置指针指向NULL
调用Release方法,注意是要调用智能指针的Release方法,而不是内部指针的,指针指针的Release方法,会调用内部指针的Relase,然后设...
ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...tialize方法前,需要手动释放所有的全局或者静态变量。
如何手动释放呢:
设置指针指向NULL
调用Release方法,注意是要调用智能指针的Release方法,而不是内部指针的,指针指针的Release方法,会调用内部指针的Relase,然后设...
Reading an Excel file in PHP [closed]
... you want to use the data in the excel file. If you want to import it into mysql, you could simply save it as a CSV formatted file and then use fgetcsv to parse it.
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How can I temporarily disable a foreign key constraint in MySQL?
Is it possible to temporarily disable constraints in MySQL?
10 Answers
10
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Detect if value is number in MySQL
Is there a way to detect if a value is a number in a MySQL query? Such as
15 Answers
1...
How do I find a “gap” in running counter with SQL?
...
In MySQL and PostgreSQL:
SELECT id + 1
FROM mytable mo
WHERE NOT EXISTS
(
SELECT NULL
FROM mytable mi
WHERE mi.id = mo.id + 1
)
ORDER BY
id
LIMIT 1
In SQL Server:
...
SQL query return data from multiple tables
...mply a color listing so that we know what colors we have in the car yard.
mysql> create table colors(id int(3) not null auto_increment primary key,
-> color varchar(15), paint varchar(10));
Query OK, 0 rows affected (0.01 sec)
mysql> show columns from colors;
+-------+-------------+-...
Create boolean column in MySQL with false as default value?
I want to create a table in MySQL with a boolean column whose default value is false . But it's accepting NULL as default...
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