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Kumar Varma has Published 107 Articles

Kumar Varma
243 Views
Big projects are difficult to manage on mere text editors. You're likely to be more productive and less frustrated if you use an IDE in such cases. There are various types of IDE's and you should select the right one which fits your needs. There is no single best IDE ... Read More

Kumar Varma
181 Views
We can use LCASE() and LOWER() functions for changing the character case of a string to lower case and UCASE() and UPPER() functions for changing the character case of a string to upper case.Examplemysql> Select LCASE('NEW DELHI'); +--------------------+ | LCASE('NEW DELHI') | +--------------------+ | new delhi ... Read More

Kumar Varma
320 Views
It will return NULL as the output when the value of either first argument i.e. substring or the value of second argument i.e. substring is NULL. Example below will demonstrate it −Examplemysql> Select LOCATE(NULL, 'Ram is a good boy')As Result; +--------+ | Result | +--------+ | NULL | ... Read More

Kumar Varma
215 Views
Yes, you can use json_extract(). Let us first create a table −mysql> create table DemoTable -> ( -> Data json -> ); Query OK, 0 rows affected (0.63 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('{"Name": "John", "CountryName": "US"}'); Query OK, ... Read More

Kumar Varma
93 Views
You can use having clause. Let us first create a table −mysql> create table DemoTable -> ( -> AdmissionDate varchar(100) -> ); Query OK, 0 rows affected (0.55 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('10/12/2017'); Query OK, 1 row affected ... Read More

Kumar Varma
894 Views
Let us first create a table −mysql> create table DemoTable -> ( -> Amount int -> ); Query OK, 0 rows affected (0.50 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(10); Query OK, 1 row affected (0.17 sec) mysql> insert ... Read More

Kumar Varma
115 Views
We will first order by DESC and then fetch the value associated with maximum id −select *from yourTableName order by yourColumnName DESC LIMIT 1, 1;Let us first create a table −mysql> create table DemoTable -> ( -> Alldata int -> ); Query OK, 0 rows affected (0.63 ... Read More

Kumar Varma
599 Views
Following is the syntax −update yourTableName set yourColumnName1= yourValue where yourColumnName2=yourValue order by yourColumnName2 DESC LIMIT 1;Let us first create a table −mysql> create table DemoTable -> ( -> Id int, -> Name varchar(100) -> ); Query OK, 0 rows affected (0.61 sec)Insert some records in ... Read More

Kumar Varma
3K+ Views
Let us first create a table −mysql> create table DemoTable -> ( -> NumberOfItems int, -> Amount int -> ); Query OK, 0 rows affected (0.57 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(4, 902); Query OK, 1 row affected ... Read More

Kumar Varma
3K+ Views
For this, you can use ORDER BY DESC LIMIT. Let us first create a table −mysql> create table DemoTable -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> Name varchar(100) -> ); Query OK, 0 rows affected (0.59 sec)Insert some records in the table ... Read More