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Articles by AmitDiwan
Page 703 of 840
Condition to check for due date and current date records in MySQL where clause
To check for such conditions, use IF() in MySQL.Let us create a table −Examplemysql> create table demo89 -> ( -> duedate date -> ); Query OK, 0 rows affected (0.78Insert some records into the table with the help of insert command −Examplemysql> insert into demo89 values('2020-01-10'); Query OK, 1 row affected (0.55 mysql> insert into demo89 values(null); Query OK, 1 row affected (0.13 mysql> insert into demo89 values('2020-11-29'); Query OK, 1 row affected (0.15 mysql> insert into demo89 values('2019-11-29'); Query OK, 1 row affected (0.09Display records from the table using select statement −Examplemysql> select ...
Read MoreCreating a table with MySQL - Hibernate
To create a table, you need to insert below line into application.properties −spring.jpa.hibernate.ddl-auto=updateHere, Hibernate will create the table demo88 automatically. The application.properties code is as follows −spring.datasource.platform=mysql spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect spring.jpa.hibernate.ddl-auto=update server.port=8191 spring.datasource.driverClassName=com.mysql.jdbc.Driver spring.datasource.url=jdbc:mysql://localhost:3306/sampledatabase spring.datasource.username=root spring.datasource.password=123456The demo88 entity class is as follows to create table columns −Examplepackage com.automaticallytablecreation; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.Table; @Entity @Table public class demo88 { @Id private int id; @Column(name="name") private String name; }The main class code is as follows −Examplepackage com.automaticallytablecreation; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class AutomaticTableApplication { public static void main(String[] ...
Read MoreHow to check if any value is Null in a MySQL table single row?
For this, you can use ISNULL in MySQL.Let us create a table −Examplemysql> create table demo86 -> ( -> value1 varchar(20) -> , -> value2 varchar(20) -> ); Query OK, 0 rows affected (2.77Insert some records into the table with the help of insert command −Examplemysql> insert into demo86 values(null, null); Query OK, 1 row affected (0.34 mysql> insert into demo86 values(null, 'John'); Query OK, 1 row affected (0.16 mysql> insert into demo86 values('David', 'Mike'); Query OK, 1 row affected (0.17 mysql> insert into demo86 values('Sam', null); Query OK, 1 row affected ...
Read MoreMySQL - SUM rows with same ID?
To sum rows with same ID, use the GROUP BY HAVING clause.Let us create a table −Examplemysql> create table demo84 -> ( -> id int, -> price int -> ) -> ; Query OK, 0 rows affected (0.60Insert some records into the table with the help of insert command −Examplemysql> insert into demo84 values(1, 2000); Query OK, 1 row affected (0.08 mysql> insert into demo84 values(1, 2000); Query OK, 1 row affected (0.14 mysql> insert into demo84 values(2, 1800); Query OK, 1 row affected (0.14 mysql> insert into demo84 values(2, 2200); Query ...
Read MoreShow date like 30-04-2020 instead of 2020-04-30 from MySQL database?
For this, use DATE_FORMAT() in MySQL. The syntax is as follows −Exampleselect date_format(yourColumnName, '%d-%m-%Y') as anyAliasName from yourTableName;Let us create a table −Examplemysql> create table demo80 -> ( -> due_date date -> ); Query OK, 0 rows affected (0.74Insert some records into the table with the help of insert command −Examplemysql> insert into demo80 values('2020-04-30'); Query OK, 1 row affected (0.14 mysql> insert into demo80 values('2016-01-10'); Query OK, 1 row affected (0.17 mysql> insert into demo80 values('2018-03-21'); Query OK, 1 row affected (0.12Display records from the table using select statement −Examplemysql> select *from demo80;This will ...
Read MoreHow to get username using ID from another table in MySQL database?
To get username using ID from two tables, you need to use JOIN and join the tables.Let us create a table −Examplemysql> create table demo77 -> ( -> userid int not null primary key, -> username varchar(20) -> ); Query OK, 0 rows affected (2.63Insert some records into the table with the help of insert command −Examplemysql> insert into demo77 values(1, 'John'); Query OK, 1 row affected (0.19 mysql> insert into demo77 values(2, 'Bob'); Query OK, 1 row affected (0.36Display records from the table using select statement −Examplemysql> select *from demo77;This will produce the following ...
Read MoreFind all users with a unique last name in MySQL?
To find all users with unique last name, use GROUP BY HAVING COUNT().Let us create a table −Examplemysql> create table demo76 -> ( -> firstName varchar(20), -> lastName varchar(20) -> ); Query OK, 0 rows affected (9.29Insert some records into the table with the help of insert command −Examplemysql> insert into demo76 values('John', 'Doe'); Query OK, 1 row affected (2.52 mysql> insert into demo76 values('David', 'Smith'); Query OK, 1 row affected (6.31 mysql> insert into demo76 values('Adam', 'Smith'); Query OK, 1 row affected (1.52Display records from the table using select statement −Examplemysql> select *from ...
Read MoreFetching rows updated at timestamp older than 1 day in MySQL?
For this, yYou can use from_unixtime() along with now().Let us create a table with some data type −Examplemysql> create table demo75 -> ( -> due_date int(11) -> ); Query OK, 0 rows affected, 1 warning (2.87Insert some records into the table with the help of insert command −Examplemysql> insert into demo75 values(unix_timestamp("2020-01-10")); Query OK, 1 row affected (0.46 mysql> insert into demo75 values(unix_timestamp("2020-11-19")); Query OK, 1 row affected (0.59 mysql> insert into demo75 values(unix_timestamp("2020-12-18")); Query OK, 1 row affected (0.44 mysql> insert into demo75 values(unix_timestamp("2020-11-10")); Query OK, 1 row affected (0.70Display records from the ...
Read MoreMySQL LIKE query with dynamic array?
To implement LIKE query with dynamic array, the syntax is as follows −Exampleselect *from yourTableName where yourColumnName2 like "%yourValue%" order by yourColumnName1 asc limit yourLimitValue;Let us create a table −Examplemysql> create table demo74 -> ( -> user_id int not null auto_increment primary key, -> user_names varchar(250) -> ) -> ; Query OK, 0 rows affected (0.67Insert some records into the table with the help of insert command −Examplemysql> insert into demo74(user_names) values("John Smith1, John Smith2, John Smith3"); Query OK, 1 row affected (0.18 mysql> insert into demo74(user_names) values("John Smith1"); Query OK, ...
Read MoreExplain what a neuron is, in terms of Neural Network in Machine Learning.
A neuron is a mathematical function that takes one or more values as input and outputs a ingle numerical value −It can be defined as follows −Here, ‘f’ refers to the function.We first computed the weighted sum of the inputs xi and the weights wiThe weight wi is also known as the activation value or activation function.The input xi can be a numerical value that represents the input data or it can be an output from other neurons if the neuron belong to a neural network.The weight wi is a numerical value that can be used to represent the strength ...
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