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How to remove all of the data in a table using Django
...ursor = connection.cursor()
table_name = self.model._meta.db_table
sql = "DROP TABLE %s;" % (table_name, )
cursor.execute(sql)
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Java ResultSet how to check if there are any results
...like this:
public static boolean isMyResultSetEmpty(ResultSet rs) throws SQLException {
return (!rs.isBeforeFirst() && rs.getRow() == 0);
}
This function will return true if ResultSet is empty, false if not or throw an SQLException if that ResultSet is closed/uninitialized.
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传感器组件 · App Inventor 2 中文网
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方法
无
位置传感器
不可见组件，提供位置信息，包括：
纬度， 经度、 海拔（如果设备支持）、速度（如果设备支持） 和地址。
也可以执行“地理编码”，转换给定的地址（不限于当前地址）到纬度（使用 由地址求...
Difference Between Select and SelectMany
... find a suitable answer. I need to learn the difference when using LINQ To SQL but all I've found are standard array examples.
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What is
... java.util.Date. It implements Comparable<Date>. But what about java.sql.Date? It implements Comparable<java.util.Date> as well.
Without the super signature, SortedList would not be able accept the type of java.sql.Date, because it doesn't implement a Comparable of itself, but rather of...
Array to String PHP?
... Classes
4 | Other
You would simply select the data from the table with SQL, rather than have a table that looks like:
id | word
1 | Sports|Festivals|Classes|Other
That's not how anybody designs a schema in a relational database, it totally defeats the purpose of it.
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Google App Engine: Is it possible to do a Gql LIKE query?
Simple one really. In SQL, if I want to search a text field for a couple of characters, I can do:
12 Answers
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Escaping single quote in PHP when inserting into MySQL [duplicate]
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You should be escaping each of these strings (in both snippets) with mysql_real_escape_string().
http://us3.php.net/mysql-real-escape-string
The reason your two queries are behaving differently is likely because you have magic_quotes_gpc turned on (which you should know is a bad idea). This m...
Regex (grep) for multi-line search needed [duplicate]
I'm running a grep to find any *.sql file that has the word select followed by the word customerName followed by the word from . This select statement can span many lines and can contain tabs and newlines.
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How do I specify a password to 'psql' non-interactively?
...ll script and one thing I've hit a road block with passing a password to psql .
Here is a bit of code from the shell script:
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