To add minutes to a datetime you can use DATE_ADD() function from MySQL. In PHP, you can use strtotime().To add 30 minutes in MySQL, the DATE_ADD() function is as follows −select date_add(yourColumnName, interval 30 minute) from yourTableName;To use the above syntax, let us create a table. The following is the ... Read More

To delete all the records from a MySQL table, you can use the TRUNCATE statement.The syntax is as follows −TRUNCATE TABLE yourTableName;The above syntax deletes all the records from the table. To understand the above syntax, let us create a table. The following is the query to create a table ... Read More

To draw a route between two Locations on map we need to have co-ordinates of both those locations.Once we have the co-ordinates of both locations we can use the below given function to show the line between two points on map. In this example I’ll be using two random location ... Read More

You can order by length of characters with the help of CHAR_LENGTH() function from MySQL. The function returns the number of characters i.e. 4 for the following string −AMITTo order strings by length of characters, the following is the syntax −select *from yourTableName order by CHAR_LENGTH(yourColumnName);To understand the above concept, ... Read More

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 ... Read More

The number 1 used in parenthesis is only for width display. The INT(1) and TINYINT(1) does not influence the storage.The TINYINT takes 1 byte that means it has range -128 to +127 while int takes 4 bytes; it has range -2147483648 to +2147483647To understand the width display, let us create ... Read More

In this program we will see how to find the smallest number from a block of bytes using 8085.Problem StatementWrite 8085 Assembly language program to find the smallest number from a block of bytes.DiscussionIn this program the data are stored at location 8001H onwards. The 8000H is containing the size ... Read More

In this program we will see how to count number of 1's in an 8-bit number.Problem StatementWrite 8085 Assembly language program to count number of 1s in 8-bit number stored atlocation 8000H.DiscussionIn this program we areusing the rotate operation to count the number of 1's. As there are8 different bits ... Read More

You can create DATETIME from DATE and TIME with the help of ADDTIME() function in MySQL. The syntax is as follows −SELECT ADDTIME(CONVERT(yourDateColumnName, datetime), yourTimeColumnName) as anyVariableName from yourTableName;To understand the above concept, let us create a table. The query to create a table is as follows −mysql> create table ... Read More

In this program we will see how to find 1's complement and 2's complement of a 16-bit number.Problem StatementWrite 8085 Assembly language program to find 1's complement and 2's complement of a16-bit number stored in 8000H and 8001H.Discussion8085 has an instruction CMA. This instruction complements the content of Accumulator. For ... Read More