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To get only the date from DateTime, use the date format specifiers −%d for day %m for month %Y for yearLet us first create a table −mysql> create table DemoTable ( AdmissionDate datetime ); Query OK, 0 rows affected (0.52 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('2019-07-21 12:34:56'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values('2016-08-18 10:00:02'); Query OK, 1 row affected (0.51 sec) mysql> insert into DemoTable values('2018-01-03 11:02:20'); Query OK, 1 row affected (0.12 sec)Display all records from the table using select statement −mysql> select *from ... Read More
To replace, use the REPLACE() MySQL function. Since you need to update the table for this, use the UPDATE() function with the SET clause.Following is the syntax −update yourTableName set yourColumnName=replace(yourColumnName, yourOldValue, yourNewValue);Let us first create a table −mysql> create table DemoTable ( FirstName varchar(100), CountryName varchar(100) ); Query OK, 0 rows affected (0.69 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('John', 'AUS'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values('Bob', 'AUS'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values('Chris', 'US'); Query OK, 1 ... Read More
For this, you can use the ORDER BY CASE statement. Let us first create a table −mysql> create table DemoTable ( StudentName varchar(100), StudentMarks int ); Query OK, 0 rows affected (0.97 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Chris', 45); Query OK, 1 row affected (0.21 sec) mysql> insert into DemoTable values('John', 67); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values('David', 89); Query OK, 1 row affected (0.46 sec) mysql> insert into DemoTable values('John', 98); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values('Mike', ... Read More
To order by the first number in a set of numbers, use ORDER BY SUBSTRING_INDEX(). Let us first create a table −mysql> create table DemoTable ( SetOfNumbers text ); Query OK, 0 rows affected (0.53 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('245, 654, 76, 89, 98'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('2000, 567, 9090, 6789'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('1001, 90595, 657, 99'); Query OK, 1 row affected (0.20 sec)Display all records from the table using select statement −mysql> ... Read More
Yes, but you need to add a backtick symbol to the reserved word (index) to avoid error while using it as a column name.Let us first create a table −mysql> create table DemoTable ( `index` int ); Query OK, 0 rows affected (0.48 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(1000); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values(1020); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(967); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values(567); Query OK, 1 row affected (0.12 ... Read More
Let us first create a table −mysql> create table DemoTable ( FirstName varchar(100), Score int ); Query OK, 0 rows affected (0.60 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('David', 59); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values('Chris', 97); Query OK, 1 row affected (0.24 sec) mysql> insert into DemoTable values('Bob', 98); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('Carol', 91); Query OK, 1 row affected (0.11 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the ... Read More
For this, use IF() along with IS NULL property. Let us first create a table −mysql> create table DemoTable ( Name varchar(100), CountryName varchar(100) ); Query OK, 0 rows affected (0.70 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Chris', 'US'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('Mike', NULL); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable(Name) values('David'); Query OK, 1 row affected (0.38 sec) mysql> insert into DemoTable values('Bob', 'AUS'); Query OK, 1 row affected (0.45 sec)Display all records from the table using select ... Read More
In this article, we will learn about the solution and approach to solve the given problem statement.Problem statementGiven an input string we need to find the most occurring character and its count.ApproachCreate a dictionary using Counter method having strings as keys and their frequencies as values.Find the maximum occurrence of a character i.e. value and get the index of it.Now let’s see the implementation below −Examplefrom collections import Counter def find(input_): # dictionary wc = Counter(input_) # Finding maximum occurrence s = max(wc.values()) i = wc.values().index(s) print (wc.items()[i]) # Driver program if __name__ ... Read More
In this article, we will learn about the solution and approach to solve the given problem statement.Problem statementGiven an array as an input, we need to compute the sum of the given array.Here we may follow the brute-force approach i.e. traversing over a list and adding each element to an empty sum variable. Finally, we display the value of the sum.We can also perform an alternate approach using built-in sum function as discussed below.Example# main arr = [1, 2, 3, 4, 5] ans = sum(arr, n) print ('Sum of the array is ', ans)Output15 All the variables & functions are ... Read More
In this article, we will learn about the solution and approach to solve the given problem statement.Problem statementGiven a list input , we need to find the sum of absolute difference between all pairs in a list.Enumerate() method adds a counter to an iterable and returns it in a form of enumerate object type.In this method, we have a list ‘diffs’ which contains the absolute difference.We use two loops having two variables initialized . One is to iterate through the counter and another for the list element. In every iteration, we check whether the elements are similar or not.If not, ... Read More