Tutorial by Examples: u

PhraseQuery is used to search for a sequence of terms. The following matches the phrase "Hello World" (after being indexed with StandardAnalyzer) Query query = new PhraseQuery.Builder() .add(new Term("text", "hello")) .add(new Term("text"...

This combines queries such that the best (that is, highest-scoring) match of it's subqueries contributes to the final score. List<Query> disjuncts = new ArrayList<Query>(); disjuncts.add(new TermQuery(new Term("fieldname", "hello"))); disjuncts.add(new TermQuery(...

A query can be boosted to increase it's score relative to other subqueries. This is done by wrapping it with a BoostQuery Query lessRelevantQuery = new TermQuery(new Term("fieldname", "ipsum")); //Five times as interesting Query highlyRelevantQuery = new BoostQuery( ...

The authentic Adobe PostScript interpreters are available in high-end printers, the Display PostScript (DPS) product, and the Acrobat Distiller product. As authors of the standard, these products are considered "the standard implementation" for the purpose of describing differences among P...

When a table has an AUTO_INCREMENT PRIMARY KEY, normally one does not insert into that column. Instead, specify all the other columns, then ask what the new id was. CREATE TABLE t ( id SMALLINT UNSIGNED AUTO_INCREMENT NOT NULL, this ..., that ..., PRIMARY KEY(id) ); INSERT I...

This set of example show how to execute commands stored in strings or script files, without the need of the interactive prompt. This is especially useful to when a shell script needs to interact with a database. Execute command from a string $ mysql -uroot -proot test -e'select * from people' +...

Suppose you have a DataFrame of numerical values, for example: df = pd.DataFrame(np.random.randn(1000, 3), columns=['a', 'b', 'c']) Then >>> df.corr() a b c a 1.000000 0.018602 0.038098 b 0.018602 1.000000 -0.014245 c 0.038098 -0.014245 1.000000...

Detailed instructions on getting lxml set up or installed.

Detailed instructions on getting titanium set up or installed.

Prepare First create a "message.properties" file in Resources/Files/. Example: ############## # Test message.properties ############## label.age=Enter your age: validate.error.reqired.age=Sorry, but you have to give away the secret of your age ... Next, connect the resource with y...

Detailed instructions on getting cdi set up or installed.

Sometimes your webpage needs a automatic redirect. For example, to redirect to example.com after 5 seconds: <meta http-equiv="refresh" content="5;url=https://www.example.com/" /> This is line will send you to the designated website (in this case example.com after 5 sec...

Union types are used in several languages, like C-language, to contain several different types which can "overlap". In other words, they might contain different fields all of which start at the same memory offset, even when they might have different lengths and types. This has the benef...

setuptools_scm is an officially-blessed package that can use Git or Mercurial metadata to determine the version number of your package, and find Python packages and package data to include in it. from setuptools import setup, find_packages setup( setup_requires=['setuptools_scm'], use_...

It's important to note that the System.Progress<T> class does not have the Report() method available on it. This method was implemented explicitly from the IProgress<T> interface, and therefore must be called on a Progress<T> when it's cast to an IProgress<T>. var p1 = new P...

def hello_world(greeting: str = 'Hello'): print(greeting + ' world!') Note the spaces around the equal sign as opposed to how keyword arguments are usually styled.

Create example table Employee: CREATE TABLE Employee ( Id INT, EmpName VARCHAR(25), EmpGender VARCHAR(6), EmpDeptId INT ) Creates stored procedure that checks whether the values passed in stored procedure are not null or non empty and perform insert operation in Employee ta...

A subquery is a query within another SQL query. A subquery is also called inner query or inner select and the statement containing a subquery is called an outer query or outer select. Note Subqueries must be enclosed within parenthesis, An ORDER BY cannot be used in a subquery. The image type ...

Uname is the short name for unix name. Just type uname in console to get information about your operating system. uname [OPTION] If no OPTION is specified, uname assumes the -s option. -a or --all - Prints all information, omitting -p and -i if the information is unknown. Example: > unam...

What's the deal with the following? julia> @test 0.1 + 0.2 == 0.3 Test Failed Expression: 0.1 + 0.2 == 0.3 Evaluated: 0.30000000000000004 == 0.3 ERROR: There was an error during testing in record(::Base.Test.FallbackTestSet, ::Base.Test.Fail) at ./test.jl:397 in do_test(::Base.Test....