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This cannot be done through the visited state. The best solution is to add a random query to url so that page go unvisited.
MySQL NOW() and SYSDATE() functions returns the current timestamp values. But the output of both of them depends upon the execution time. This creates the big difference between them.NOW() function returns a steady time that indicates the time at which the particular statement began to execute. In contrast, SYSDATE() function returns the accurate time at which the statement executes. Following example will show the difference between these functions −mysql> Select NOW(), SLEEP(5), NOW(); +---------------------+----------+---------------------+ | NOW() | SLEEP(5) | NOW() | +---------------------+----------+---------------------+ | 2017-10-31 09:57:36 | ... Read More
There is no way to fade markers through API.However, markers can be simulated by creating Custom Overlay.Custom overlay usually contains a div with the help of which opacity can be controlled by javascript or jquery.In order to create effects or animations over Google Maps markers, we need a custom overlay.The marker can be added to map and it surely makes optimized: false optionvar newmarkerimg= $('#map_canvas img[src*="iconmarker "][class!="imageadjust "]');
If you want to open a file browser in JavaScript and then want to set a default directory same as the file folder, then we cannot do it since windows do not allow you to do so,so it is not possible. For example:C: :\AmitThis is mainly due to security risk involved to let web code to set any value on the machine.We can never be assured that even directory exists or not.
If we pass an invalid string as an argument to STR_TO_DATE() function then MySQL will return NULL as output along with a warning. Following is an example to understand the same −mysql> Select STR_TO_DATE('20173210', '%Y%d%m'); +-----------------------------------+ | STR_TO_DATE('20173210', '%Y%d%m') | +-----------------------------------+ | NULL | +-----------------------------------+ 1 row in set, 1 warning (0.00 sec)In the query above the string value is invalid because of wrong (32) day value. Hence it returns NULL values and a warning which is given below.mysql> Show warnings\G *************************** 1. row *************************** ... Read More
With the help of UPDATE statement and WHERE clause, we can update the values in single or multiple rows of the table. MySQL updates the values on the basis of condition specified in WHERE clause. For example, suppose in the ‘employee’ table we want to change the ‘name’ and ‘doj’ of the employee whose id is 1 then it can be done with the following query −mysql> UPDATE employee SET name = 'Gaurav', doj = '2010-02-01' WHERE id = 1; Query OK, 1 row affected (0.06 sec) Rows matched: 1 Changed: 1 Warnings: 0 mysql> select * from employee ... Read More
As we know that we can convert a time of datetime value to an integer by adding 0(+0) to them. In a similar way, we can convert the datetime value returned by FROM_UNIXTIME() function in numeric format. The following example will clarify it more −mysql> Select FROM_UNIXTIME(1555033470)+0 AS 'Date in Numeric Format'; +------------------------+ | Date in Numeric Format | +------------------------+ | 20190412071430.000000 | +------------------------+ 1 row in set (0.00 sec)After adding 0 (+0) to datetime value MySQL returns the numeric value up to 6 digits microseconds.
STR_TO_DATE() function will convert a string value into datetime value and it would be according to a specific format string. Both string value and format string must be passed as arguments to the function. Following is the syntax of STR_TO_DATE() function.STR_TO_DATE(string, format)Here string is the value of string which needs to be converted to datetime value and format is the specified date format.The following example will return valid date from given string and according to the specified format.mysql> Select STR_TO_DATE('20172810', '%Y%d%m'); +-----------------------------------+ | STR_TO_DATE('20172810', '%Y%d%m') | +-----------------------------------+ | 2017-10-28 ... Read More
At the time of creation of a table, if any column is defined with default values then by using the keyword ‘DEFAULT’ in the INSERT statement, we can take default value for that column. For example, we have created a table ‘employee’ with a default value of column ‘DOJ’ as follows −mysql> Create table employee(id int, name varchar(20), doj date DEFAULT '2005-01-01'); Query OK, 0 rows affected (0.09 sec) mysql> Insert into employee(id, name, doj) values(1, ’Aarav’, DEFAULT); Query OK, 1 row affected (0.03 sec) mysql> select * from employee; +------+------------+---------------+ | id | name ... Read More
We can use FROM_UNIXTIME() function to retrieve the value, as MySQL TIMESTAMP, stored as INT in the column of a table.For example, we have a table called ‘test123’ which has a column named ‘val1’. In this column, we stored the integer values as follows −mysql> Select * from test123; +------------+ | val1 | +------------+ | 150862 | | 1508622563 | | 622556879 | | 2147483647 | +------------+ 4 rows in set (0.00 sec)Now with the help of the FROM_UNIXTIME() function, we can retrieve the column integer values in the form of MySQL TIMESTAMP data.mysql> Select ... Read More