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Articles on Trending Technologies
Technical articles with clear explanations and examples
Avoid placing password on command line with MySQL Utilities?
First you need to reach the location of “my.cnf” with the help of below query for MySQL Utilities. The query is as follows −mysql> select @@datadir;The following is the output that display where “my.conf” is −+---------------------------------------------+ | @@datadir | +---------------------------------------------+ | C:\ProgramData\MySQL\MySQL Server 8.0\Data\ | +---------------------------------------------+ 1 row in set (0.00 sec)Follow the above path in order to open the “my.cnf” file. The snapshot of “my.cnf” location is as follows −Now you can put the below MySQL Utilities in my.cnf which is as ...
Read MoreHow to resolve the ERROR 1115 (42000): Unknown character set: 'utf8mb4'?
You will get this type of error when your MySQL version is below 5.5.3. This is because “utf8mb4” introduced in MySQL version 5.5.3.Firstly, you need to check the current version. If its less than 5.5.3, then you need to upgrade to solve the above error.Check the current version −mysql> select version();Here, our MySQL version is over 5.5.3 −+-----------+ | version() | +-----------+ | 8.0.12 | +-----------+ 1 row in set (0.00 sec)Now the same query that gave an error 1115, will display correct result. To check all character set in MySQL now, use the below query.mysql> show character set;The ...
Read MoreCSS border-image property
CSS border-image property is used to add image border to some elements. You can try to run the following code to implement the border-image property −ExampleLive Demo #borderimg1 { border: 15px solid transparent; padding: 15px; border-image: url(https://tutorialspoint.com/css/images/border.png) 50 round; } This is image border example.
Read MoreTada Animation Effect with CSS
To create Tada animation effect with CSS, you can try to run the following code:ExampleLive Demo .animated { background-image: url(/css/images/logo.png); background-repeat: no-repeat; background-position: left top; padding-top:95px; margin-bottom:60px; -webkit-animation-duration: 10s; animation-duration: 10s; -webkit-animation-fill-mode: both; animation-fill-mode: both; } @-webkit-keyframes tada { 0% {-webkit-transform: scale(1);} 10%, 20% {-webkit-transform: scale(0.9) rotate(-3deg);} 30%, 50%, 70%, 90% {-webkit-transform: scale(1.1) rotate(3deg);} 40%, 60%, 80% {-webkit-transform: scale(1.1) rotate(-3deg);} 100% {-webkit-transform: scale(1) rotate(0);} } @keyframes tada { 0% {transform: scale(1);} 10%, 20% {transform: scale(0.9) rotate(-3deg);} 30%, 50%, 70%, 90% {transform: scale(1.1) rotate(3deg);} 40%, 60%, 80% {transform: scale(1.1) rotate(-3deg);} 100% {transform: scale(1) rotate(0);} } .tada { -webkit-animation-name: tada; animation-name: tada; } Reload page function myFunction() { location.reload(); }
Read MoreSwing Animation Effect with CSS
The swing animation effect move or cause to move back and forth or from side to side while suspended or on an axis to an element.ExampleLive Demo .animated { background-image: url(/css/images/logo.png); background-repeat: no-repeat; background-position: left top; padding-top:95px; margin-bottom:60px; -webkit-animation-duration: 10s; animation-duration: 10s; ...
Read MoreHow to subtract 3 hours from a datetime in MySQL?
Subtract 3 hours from DateTime in MySQL, using any of the following ways. The first approach is as follows −Case 1 − Using DATE_ADD()select date_add(yourColumnName, interval -3 hours) from yourTableName;Case 2 − Using DATE_SUB()select date_sub(yourColumnName, interval 3 hours) from yourTableName;Firstly, use now() to get the current date-time −mysql> select now();The following is the output −+---------------------+ | now() | +---------------------+ | 2018-11-30 10:13:23 | +---------------------+ 1 row in set (0.00 sec)DATE_ADDThe query to subtract 3 hours from DateTime is as follows. With date_add, we have set a negative date −mysql> select date_add(now(), interval -3 ...
Read MoreSimple way to toggle a value of an int field in MySQL
To toggle a value of an int field, you can use update command with if(). The syntax is as follows −update yourTableName set yourColumnName = IF(yourColumnName = 0, 1, 0);To understand the above toggle syntax, create a table with some int value. The query to create a table is as follows −mysql> create table ToggleDemo −> ( −> IsOnOrOff int −> ); Query OK, 0 rows affected (0.53 sec)Let us insert int values in the table with the help of insert command. The query is as follows −mysql> insert into ToggleDemo values(1); Query OK, 1 ...
Read MoreHow to find the highest number in a column?
You can find the highest number in a column with the help of aggregate function MAX. The syntax is as follows −select max(yourColumnName) as anyVariableName from yourTableName;To understand the above concept, let us create a table with an int column. The following is the query to create a table.mysql> create table HighestNumberDemo −> ( −> BigNumber int −> ); Query OK, 0 rows affected (0.87 sec)Now insert some values in the table. The query to insert records are as follows −mysql> insert into HighestNumberDemo values(1234); Query OK, 1 row affected (0.43 sec) mysql> insert ...
Read MoreMaintaining order in MySQL “IN” query?
You can maintain the order in MySQL IN query with the help of field command. The syntax is as follows −select *from yourTableName anyVariableName where anyVariableName.yourColumnName in(value1, value2, ......N) order by field(anyVariableName.yourColumnName, value1, value2, ......N);To implement the above syntax let us create a table −mysql> create table OrderInDemo −> ( −> Id int, −> Name varchar(100), −> Age int −> ); Query OK, 0 rows affected (1.24 sec)Now let us insert some records in the table. The query to insert records are as follows −mysql> insert into OrderInDemo values(90, ...
Read MoreHow to change Table Engine in MySQL?
You can change table engine with the help of alter command. The syntax is as follows −alter table yourTableName ENGINE = yourEngineName;To understand the above syntax let us create a table with engine MyISAM. Later you can change any other engine. The following is the query to create a table.mysql> create table ChangeEngineTableDemo −> ( −> MovieId int, −> MovieName varchar(100), −> IsPopular bool −> )ENGINE = 'MyISAM'; Query OK, 0 rows affected (0.37 sec)Look at the above query, the table engine is MyISAM, now you can change it to any other engine. Here, we will change ...
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