AmitDiwan has Published 10740 Articles

How to return table from MySQL function?

AmitDiwan

AmitDiwan

Updated on 21-Aug-2019 11:44:57

9K+ Views

You cannot return table from MySQL function. The function can return string, integer, char etc. To return table from MySQL, use stored procedure, not function.Let us first create a table −mysql> create table DemoTable696 (    Id int,    Name varchar(100) ); Query OK, 0 rows affected (0.77 sec)Insert some ... Read More

How to implement Count (*) as variable from MySQL to display the number of records in a table?

AmitDiwan

AmitDiwan

Updated on 21-Aug-2019 11:43:02

1K+ Views

The alias name can be used as a variable name in MySQL as shown in the below syntax −select count(*) AS anyAliasName from yourTableName;Let us first create a table −mysql> create table DemoTable695 (    FirstName varchar(100) ); Query OK, 0 rows affected (0.72 sec)Insert some records in the table ... Read More

How to get the first and last record of the table in MySQL?

AmitDiwan

AmitDiwan

Updated on 21-Aug-2019 11:41:46

18K+ Views

To get the first and last record, use UNION. LIMIT is also used to get the number of records you want.Let us first create a table −mysql> create table DemoTable694 (    EmployeeId int NOT NULL AUTO_INCREMENT PRIMARY KEY,    EmployeeName varchar(100),    EmployeeSalary int ); Query OK, 0 rows ... Read More

Can we use “When” as column name in CREATE TABLE statement?

AmitDiwan

AmitDiwan

Updated on 21-Aug-2019 11:39:49

138 Views

Before beginning, let us try to set ‘when’ as column name while using CREATE TABLE statement −mysql> create table DemoTable693(    StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY,    StudentName varchar(100),    When datetime );This will produce the following output. An error would be visible:ERROR 1064 (42000): You have an ... Read More

Get a list of MySQL databases and version?

AmitDiwan

AmitDiwan

Updated on 21-Aug-2019 11:36:21

175 Views

To get a list of MySQL databases, following is the syntax -show databases;To get the server version, you can use the below syntax -select version();Let us implement the above syntax to get a list of MySQL databases and version -mysql> show databases;This will produce the following output displaying all the ... Read More

How to group by date regardless of time in MySQL?

AmitDiwan

AmitDiwan

Updated on 21-Aug-2019 11:33:06

525 Views

When you have identical dates in a table with different time values for each, you can group them easily with GROUP BY DATE.Let us first create a table -mysql> create table DemoTable692 (DueDatetime datetime); Query OK, 0 rows affected (0.97 sec)Insert some records in the table using insert command:mysql> insert ... Read More

HTML DOM Input Radio form Property

AmitDiwan

AmitDiwan

Updated on 21-Aug-2019 06:57:36

178 Views

The HTML DOM Input Radio form property is used for returning the form reference that contains the given input radio button. If the radio button is outside the form then it will simply return NULL. This property is read-only.SyntaxFollowing is the syntax for input radio form property −radioObject.formExampleLet us look ... Read More

HTML DOM Input Radio autofocus property

AmitDiwan

AmitDiwan

Updated on 21-Aug-2019 06:42:59

324 Views

The HTML DOM input radio autofocus property is associated with the HTML element’s autofocus attribute. This property is used for setting or returning whether the input radio button automatically be focused when the page loads or not.SyntaxFollowing is the syntax for −Setting the autofocus property.radioObject.autofocus = true|falseHere, true represents ... Read More

HTML DOM Style borderImage Property

AmitDiwan

AmitDiwan

Updated on 21-Aug-2019 06:32:41

114 Views

The borderImage property is used for setting or getting the border image of an element. It is a shorthand property, so that we can manipulate borderImageSource, borderImageSlice, borderImageWidth, borderImageOutset and borderImageRepeat properties at one go.SyntaxFollowing is the syntax for −Setting the borderImage property −object.style.borderImage = "source slice width outset repeat|initial|inherit"ValuesThe ... Read More

Add a column to a MySQL table which is the result of concatenation of text and value from another auto increment column?

AmitDiwan

AmitDiwan

Updated on 20-Aug-2019 09:09:39

445 Views

For this, you can use LAST_INSERT_ID(). Let us first create a table −mysql> create table DemoTable    (    UserId int(6) unsigned zerofill NOT NULL AUTO_INCREMENT,    UserAutoIncrement char(100) default null,    PRIMARY KEY(UserId)    ); Query OK, 0 rows affected (0.72 sec)Insert some records in the table using insert ... Read More

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