MySQL Query to Order by Current Day and Month

AmitDiwan
Updated on 26-Sep-2019 08:10:26

343 Views

For this, you can use the ORDER BY CASE statement. Let us first create a table −mysql> create table DemoTable (    DueDate date ); Query OK, 0 rows affected (0.56 sec)Note − Let’s say the current date is 2019-07-22.Insert some records in the table using insert command −mysql> insert into DemoTable values('2019-03-10'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values('2019-08-25'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values('2019-06-01'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values('2019-12-31'); Query OK, 1 row affected (0.17 sec)Display all records from the ... Read More

Fix Row Value and Order by Descending in MySQL

AmitDiwan
Updated on 26-Sep-2019 08:08:56

127 Views

Let us first create a table −mysql> create table DemoTable (    id int ); Query OK, 0 rows affected (0.52 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(10); Query OK, 1 row affected (0.43 sec) mysql> insert into DemoTable values(7); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values(8); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values(6); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values(9); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable values(11); Query OK, 1 row affected ... Read More

Remove Unconvertable Characters to ASCII with SELECT in MySQL

AmitDiwan
Updated on 26-Sep-2019 08:06:59

2K+ Views

Let us first create a table −mysql> create table DemoTable (    Value varchar(100) ); Query OK, 0 rows affected (0.57 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('€986'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values('§97'); Query OK, 1 row affected (0.15 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following output −+--------+ | Value | +--------+ | €986 | | §97 +--------+ 2 rows in set (0.00 sec)Following is the query to remove unconvertable characters to ASCII ... Read More

Insertion Sort in Python Program

Pavitra
Updated on 26-Sep-2019 08:05:33

1K+ Views

In this article, we will learn about the implementation of Insertion sort in Python 3.x. Or earlier.AlgorithmIterate over the input elements by growing the sorted array at each iteration.Compare the current element with the largest value available in the sorted array.If the current element is greater, then it leaves the element in its place and moves on to the next element else it finds its correct position in the sorted array and moves it to that position in the array.This is achieved by shifting all the elements towards the right, which are larger than the current element, in the sorted ... Read More

Select Distinct Values from Two Columns in MySQL

AmitDiwan
Updated on 26-Sep-2019 08:04:17

583 Views

To select distinct values from two columns, use UNION. Let us first create a table −mysql> create table DemoTable1 (    Value1 int ); Query OK, 0 rows affected (0.56 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1 values(1); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable1 values(2); Query OK, 1 row affected (0.08 sec) mysql> insert into DemoTable1 values(3); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable1 values(4); Query OK, 1 row affected (0.12 sec)Display all records from the table using select statement −mysql> select *from DemoTable1;This will ... Read More

Single MySQL Query to Return ID from Not Null Value

AmitDiwan
Updated on 26-Sep-2019 08:00:29

124 Views

Let us first create a table −mysql> create table DemoTable (    StudentId int,    StudentName varchar(100) ); Query OK, 0 rows affected (0.85 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(NULL, 'Chris'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(NULL, 'Robert'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(101, 'David'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(102, 'Mike'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(103, 'Sam'); Query OK, 1 row affected (0.18 sec)Display all records ... Read More

GCD of More Than Two or Array Numbers in Python

Pavitra
Updated on 26-Sep-2019 07:59:28

236 Views

In this article, we will learn about the solution to the problem statement given below −Problem statementWe will be given an array of number and we need to find the greatest common divisor.If we need to find gcd of more than two numbers, gcd is equal to the product of the prime factors common to all the numbers provided as arguments. It can also be calculated by repeatedly taking the GCDs of pairs of numbers of arguments.Here we will be implementing the latter approachSo now, let’s see the implementationExample Live Demodef findgcd(x, y):    while(y):       x, y = ... Read More

Get Minimum and Maximum Value from Varchar Column in MySQL

AmitDiwan
Updated on 26-Sep-2019 07:51:01

572 Views

Let us first create a table −mysql> create table DemoTable (    Value varchar(100) ); Query OK, 0 rows affected (0.75 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('190'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('230'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values('120'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('189'); Query OK, 1 row affected (0.19 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following output −+-------+ | Value | +-------+ ... Read More

Perform MySQL Select on Dates Stored as Varchar

AmitDiwan
Updated on 26-Sep-2019 07:48:46

130 Views

Let us first create a table −mysql> create table DemoTable (    DueDate varchar(100) ); Query OK, 0 rows affected (0.50 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('21/10/2018'); Query OK, 1 row affected (0.22 sec) mysql> insert into DemoTable values('18/08/2019'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values('01/12/2012'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values('31/01/2016'); Query OK, 1 row affected (0.19 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following output −+------------+ | DueDate ... Read More

Copy Column Values from One Table to Another Matching IDs in MySQL

AmitDiwan
Updated on 26-Sep-2019 07:46:51

1K+ Views

Let us first create a table −mysql> create table DemoTable1 (    PersonId int,    Value int ); Query OK, 0 rows affected (0.64 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1 values(100, 78); Query OK, 1 row affected (0.46 sec) mysql> insert into DemoTable1 values(101, 67); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable1 values(102, 89); Query OK, 1 row affected (0.19 sec)Display all records from the table using select statement −mysql> select *from DemoTable1;This will produce the following output −+----------+-------+ | PersonId | Value | +----------+-------+ |      100 ... Read More

Advertisements