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Let us first create a table −mysql> create table DemoTable ( StudentId int, StudentFirstName varchar(100) ); Query OK, 0 rows affected (0.88 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(100, 'John'); Query OK, 1 row affected (0.32 sec) mysql> insert into DemoTable values(101, 'Chris'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values(102, 'John'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values(103, 'Sam'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(104, 'Sam'); Query OK, 1 row affected (0.13 sec)Display all records ... Read More
Let us first create a table. Following is the query to create a table in database ‘web’ −mysql> create table DemoTable ( AdmissionDate date ); Query OK, 0 rows affected (0.53 sec)Here is the Java code to insert empty(NULL) java.sql.Date in MySQL DB −import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; public class InsertNullDateDemo{ public static void main(String[] args){ Connection con=null; PreparedStatement ps=null; try{ con=DriverManager.getConnection("jdbc:mysql://localhost:3306/web?useSSL=false", "root", "123456"); String query="insert into DemoTable(AdmissionDate) values(?) "; ps= con.prepareStatement(query); ... Read More
For this, use trim() along with substring(). Let us first create a table −mysql> create table DemoTable ( Name varchar(100) ); Query OK, 0 rows affected (0.80 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('1stJohn'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values('1stJohn (7)'); Query OK, 1 row affected (0.65 sec) mysql> insert into DemoTable values('2ndSam'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values('2ndSam (4)'); Query OK, 1 row affected (0.15 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will ... Read More
Let us first create a table −mysql> create table DemoTable ( Id int, Name varchar(100) ); Query OK, 0 rows affected (0.64 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(100, 'Chris'); Query OK, 1 row affected (0.44 sec) mysql> insert into DemoTable values(200, 'Robert'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values(100, 'Chris'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values(300, 'David'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values(400, 'Mike'); Query OK, 1 row affected (0.10 sec) mysql> insert ... Read More
Let us first create a table −mysql> create table DemoTable ( Title varchar(100) ); Query OK, 0 rows affected (0.57 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('\"MySQL'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('MongoDB\"'); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable values('\"Java\"'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values('\"C\"'); Query OK, 1 row affected (0.14 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following output −+-----------+ | Title ... Read More
No, it isn’t necessary because without adding DEFAULT NULL, it gives NULL value. For example, let’s say you haven’t added DEFAULT NULL and inserted a record with no value, then the result would display the NULL value as the inserted value.Let us first create a table −mysql> create table DemoTable ( FirstName varchar(100) ); Query OK, 0 rows affected (0.57 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Chris'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values(); Query ... Read More
Let us first create a table −mysql> create table DemoTable ( Strength text ); Query OK, 0 rows affected (0.51 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('John is a good programmer'); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable values('Chris is a good player in cricket'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values('Bob is good in algorithm'); Query OK, 1 row affected (0.42 sec)Display all records from the table using select statement −mysql> select *from DemoTableThis will produce the following output −+-----------------------------------+ | Strength ... Read More
Let us first create a table −mysql> create table DemoTable ( UserId int, UserName varchar(100) ); Query OK, 0 rows affected (0.57 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(100, 'Chris'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(101, 'Robert'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values(102, 'David'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values(103, 'Mike'); Query OK, 1 row affected (0.11 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the ... Read More
Get similar results using MySQL IN(). Let us first create a table −mysql> create table DemoTable ( ClientId int, ClientName varchar(100), ClientAge int ); Query OK, 0 rows affected (0.70 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(100, 'Chris', 34); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable values(101, 'Robert', 31); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values(103, 'David', 33); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable values(104, 'Mike', 45); Query OK, 1 row affected (0.17 sec) mysql> insert ... Read More
In this article, we will learn about the Linear Search and its implementation in Python 3.x. Or earlier.AlgorithmStart from the leftmost element of given arr[] and one by one compare element x with each element of arr[]If x matches with any of the element, return the index value.If x doesn’t match with any of elements in arr[] , return -1 or element not found.Now let’s see the visual representation of the given approach −Example Live Demodef linearsearch(arr, x): for i in range(len(arr)): if arr[i] == x: return i return -1 arr = ... Read More