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To update values incrementally in MySQL, you need to create a variable with the help of SET command. The syntax to create a variable is as follows −set @anyVariableName := 0;To update value, you need to use UPDATE command. Let us begin with creating a table. The query to create a table −mysql> create table UpdateValueIncrementally −> ( −> ProductId int −> ); Query OK, 0 rows affected (0.90 sec)Insert records in the table with the help of select statement. The query is as follows −mysql> insert into UpdateValueIncrementally values(10); Query ... Read More
In addition to the modules and packages built in to the standard distribution of Python, large number of packages from third party developers are uploaded to Python package repository called Python Package Index (https://pypi.org/. To install packages from here, pip utility is needed. The pip tool is an independent project, but since Python 3.4, it has been bootstrapped in Python distribution.The ensurepip module provides support for bootstrapping pip in existing installation of Python. Normally user doesn't need to use it explicitly. If however, installation of pip is skipped in normal installation or virtual environment, it may be needed.Following command will ... Read More
First, determine the type of MySQL database i.e. whether its engine is InnoDB or MyISAM. To achieve this, use engine column from the information_schema.columns.tables.The syntax is as follows.SELECT ENGINE FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = ’yourDatabaseName’ AND TABLE_NAME = ’yourTableName’;Here, I have a table with the name ‘StudentInformations’ −mysql> create table StudentInformations -> ( -> StudentId int not null auto_increment, -> StudentFirstName varchar(20), -> StudentLastName varchar(20), -> Primary Key(StudentId) -> ); Query OK, 0 rows affected (0.57 sec)Now you can know the table is using InnoDB or MyISAM using the implementation of above syntax. Our ... Read More
Simulation and EmulationEmulation is the process of the replica of the visible behavior in order to match the existing target. The inner state of this mechanism does not need to reflect the internal state of the target precisely. The emulator is used in order to emulate.Simulation, in fact, involves modeling the inner state of the target to which stimulation is done. The end result of a noble simulation is that this mechanism will emulate the target that it is simulating. A simulator does this process.Except for the actual definition, the other points of difference between the Simulator and an Emulator ... Read More
The find() method finds the subsequence in an input sequence that matches the pattern required. This method is available in the Matcher class that is available in the java.util.regex package.A program that demonstrates the method Matcher.find() in Java regular expressions is given as follows:Example Live Demoimport java.util.regex.Matcher; import java.util.regex.Pattern; public class Demo { public static void main(String args[]) { Pattern p = Pattern.compile("Sun"); Matcher m = p.matcher("The Earth revolves around the Sun"); System.out.println("Subsequence: Sun"); System.out.println("Sequence: The Earth revolves around the Sun"); if (m.find()) ... Read More
You need to use LOCATE() along with SUBSTR(). The below syntax will find the word after delimiter. Here, delimiter is colon(:), you can use another i.e. it is up to you. The syntax is as follows −SELECT SUBSTR(yourColumnName, LOCATE(':', yourColumnName)+1, (CHAR_LENGTH(yourColumnName) - LOCATE(':', REVERSE(yourColumnName)) - LOCATE(':', yourColumnName))) AS anyAliasName FROM yourTableName;To understand the above syntax, let us create a table. The query to create a table is as follows −mysql> create table SearchTextBetweenDelimitersDemo -> ( -> ... Read More
To apply modulus (%) operator to floating-point values in an effortless task. Let us see how.We have the following two values −double one = 9.7; double two = 1.2;Let us now apply the modulus operator −one % twoThe following is the complete example that displays the output as well −Example Live Demopublic class Demo { public static void main(String args[]) { double one = 9.7; double two = 1.2; System.out.println( one % two ); } }Output0.09999999999999964
Religion today has taken a much-institutionalized form. Its origin has always been debated and discussed today by various scholars. In sociological terms, ‘Religion is a system of sacred belief and practices both in the tangible and intangible form’. Religion can serve the dual role of ideology as well as institution. Today, religion has assumed a more narrow-minded approach. However, understanding religion in the broad sense highlights the following important points about it in society:Cultural IdentityReligion plays a crucial role for a person in giving a cultural identity. Each religion has festivals, traditions, mythologies which form a part of the tangible ... Read More
You can use WHERE clause and OR operator to show table with multiple LIKE. The syntax is as follows:show table from yourDatabaseName where tables_in_yourDatabaseName Like ‘%anyTableName%’ or tables_in_yourDatabaseName Like ‘%anyTableName2%’ or tables_in_yourDatabaseName Like ‘%anyTableName3%’ . . . . or tables_in_yourDatabaseName Like ‘%anyTableNameN%’In the above syntax, only the table name in the database is displayed.Here the database ‘test’ and the tables in the same database is considered. The query to show tables with multiple LIKE is as follows -mysql> show tables from test -> where tables_in_test like '%userrole%' -> or tables_in_test like '%view_student%' -> or tables_in_test like '%wholewordmatchdemo%';The following is the ... Read More
In rhetorics, a rhetorical device is called a stylistic device too. It is a technique a speaker uses to convey to the listener in order to persuade him. It is also used by authors or writer in order to persuade them in considering a topic from a different perspective. It may involve using sentences designed to provoke emotions.English Literature and Rhetorics uses many Rhetorical devices. They are namely: Irony, metaphor, ethos, pathos, logos, various sonic devices like Onomatopoeia.IronyIt refers to the use of words where the meaning is opposite to their usual meaning or what is expected to happen.It is ... Read More