大约有 3,620 项符合查询结果（耗时：0.0154秒） [XML]
Checking for a null int value from a Java ResultSet
...worth a separate thread on SO imho. (java.sun.com/j2se/1.4.2/docs/api/java/sql/…)
– Roman
May 27 '10 at 10:58
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MySQL with Node.js
... into Node.js. I come from a PHP background, so I'm fairly used to using MySQL for all my database needs.
9 Answers
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Are there disadvantages to using a generic varchar(255) for all text-based fields?
...ld always store 255 characters.
But since you tagged this question with MySQL, I'll mention a MySQL-specific tip: as rows are copied from the storage engine layer to the SQL layer, VARCHAR fields are converted to CHAR to gain the advantage of working with fixed-width rows. So the strings in memor...
How to get the last N records in mongodb?
... order mixed up ... your sort() should be run last, not first (much like a SQL ORDER BY) .find({}).skip(1).limit(50).sort({"date":-1})
– Justin Jenkins
Mar 6 '12 at 19:11
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How do I create a PDO parameterized query with a LIKE statement?
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thanks. had similar issue with csharp + Mysql + ODBC using like it would not return any rows using "select * from table where column like '%?%';" but will if I do like you did "select * from table where column like ?;" and set the parameter string so: string frag = $...
Hibernate throws org.hibernate.AnnotationException: No identifier specified for entity: com..domain.
...otations on it whatsoever - leave it a simple pojo.
Update: In regards to SQL views, Hibernate docs write:
There is no difference between a view and a base table for a Hibernate mapping. This is transparent at the database level
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MySQL vs MySQLi when using PHP [closed]
Which is better, MySQL or MySQLi? And why? Which should I use?
6 Answers
6
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PostgreSQL “DESCRIBE TABLE”
How do you perform the equivalent of Oracle's DESCRIBE TABLE in PostgreSQL (using the psql command)?
22 Answers
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Best way to check for “empty or null value”
What is best way to check if value is null or empty string in Postgres sql statements?
10 Answers
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How to get the CPU Usage in C#?
...up with this. I needed it for an 8 core machine where I wanted to monitor SQL server. For the code below then I passed in "sqlservr" as appName.
private static void RunTest(string appName)
{
bool done = false;
PerformanceCounter total_cpu = new PerformanceCounter("Process", "% Processor T...