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For this, use the COUNT() method. Let us first create a table −mysql> create table DemoTable -> ( -> ProductName varchar(100) -> ); Query OK, 0 rows affected (0.59 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Product-1'); Query OK, 1 row affected (0.26 sec) mysql> insert into DemoTable values('Product-2'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values('Product-3'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('Product-3'); Query OK, 1 row affected (0.29 sec) mysql> insert into DemoTable values('Product-2'); Query OK, 1 row affected ... Read More
The file MULT.ASM which is created by using an editor is simply a text file. We cannot execute this file directly. At first we have to assemble the file, and then we have to link it. The step of assembly the translation of the program of assembly language to machine code requires the generation of a .OBJ file.Now a .HEX file is generated by using a linker. We have seen previously that how the naming of the input and output file is done.Input filenameThe source name of the file must be responded by the user. In the given example the ... Read More
To search for an integer value in a varchar filed, you can use CASE statement.Let us first create a table. Consider, we have a list of email-ids −mysql> create table DemoTable -> ( -> Title varchar(100) -> ); Query OK, 0 rows affected (0.61 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('9John@example.com'); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable values('3Carol@gmail.com'); Query OK, 1 row affected (0.45 sec)Display all records from the table using select statement −mysql> select *from DemoTable;OutputThis will produce the following output −+-------------------+ | Title ... Read More
For this, you can use stored procedure. Let us create a table dynamically with two columns i.e. StudentId as int, whereas StudentName as varchar −mysql> DELIMITER $$ mysql> CREATE PROCEDURE creatingDynamicTableDemo(yourTableName VARCHAR(200)) -> BEGIN -> SET @name = yourTableName; -> SET @st = CONCAT(' '> CREATE TABLE IF NOT EXISTS `' , @name, '` ( '> `StudentId` int UNSIGNED NOT NULL AUTO_INCREMENT, '> `StudentName` varchar(20) NOT NULL, '> PRIMARY KEY (`StudentId`) '> ) '> '); -> PREPARE ... Read More
To fetch record by year, use the YEAR() method in MySQL −select *from yourTableName where year(yourColumnName)=yourYearValue;Let us first create a table −mysql> create table DemoTable -> ( -> CustomerName varchar(100), -> ShippingDate datetime -> ); Query OK, 0 rows affected (0.64 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Chris', '2019-01-21'); Query OK, 1 row affected (0.28 sec) mysql> insert into DemoTable values('Robert', '2018-02-21'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('David', '2016-04-01'); Query OK, 1 row affected (0.17 sec)Display all records from the table using select statement −mysql> ... Read More
Let us first create a table −mysql> create table DemoTable -> ( -> Value int -> ); Query OK, 0 rows affected (0.57 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(0x41); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values(0x30); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(0x61); Query OK, 1 row affected (0.27 sec)Display all records from the table using select statement −mysql> select *from DemoTable;OutputThis will produce the following output −+-------+ | Value | +-------+ | 65 | | ... Read More
The class which process the WindowEvent needs to be implemented this interface and an object of this class can be registered with a component by using addWindowListener() method.Methods of WindowListener InterfaceThe WindowListener interface defines 7 methods for handling window eventsvoid windowActivated(WindowEvent we) − Invoked when a window is activated.void windowDeactivated(WindowEvent we) − Invoked when a window is deactivated.void windowOpened(WindowEvent we) − Invoked when a window is opened.void windowClosed(WindowEvent we) − Invoked when a window is closed.void windowClosing(WindowEvent we) − Invoked when a window is closing.void windowIconified(WindowEvent we) − Invoked when a window minimized.void windowDeiconfied(WindowEvent we) − Invoked when a window is restored.Syntaxpublic ... Read More
Let us first create a table −mysql> create table DemoTable -> ( -> LastName varchar(100) -> ); Query OK, 0 rows affected (0.68 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Smith'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values('Miller'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('Taylor'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('Brown'); Query OK, 1 row affected (0.29 sec)Display all records from the table using select statement −mysql> select *from DemoTable;OutputThis will produce ... Read More
For this, you can use subquery. Let us first create a table −mysql> create table DemoTable -> ( -> Value int -> ); Query OK, 0 rows affected (0.61 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(20); Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable values(30); Query OK, 1 row affected (0.36 sec) mysql> insert into DemoTable values(20); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values(40); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(30); Query OK, ... Read More
Let us first create a table −mysql> create table DemoTable -> ( -> Value1 int, -> Value2 int -> ); Query OK, 0 rows affected (0.77 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(10, 10); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values(20, 30); Query OK, 1 row affected (0.24 sec)Display all records from the table using select statement −mysql> select *from DemoTable;OutputThis will produce the following output −+--------+--------+ | Value1 | Value2 | +--------+--------+ | 10 | 10 | ... Read More