Found 4381 Articles for MySQL

Truncate results in decimal to integer value with MySQL

karthikeya Boyini
Updated on 30-Jun-2020 11:18:07

563 Views

Use truncate() for this, for example, 190.245 to 190. Following is the syntax −select truncate(yourColumnName, 0) from yourTableName;Let us first create a table −mysql> create table DemoTable    -> (    -> Value DECIMAL(10, 4)    -> ); Query OK, 0 rows affected (0.67 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(45.567); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values(100.0000); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values(15.89000); Query OK, 1 row affected (0.25 sec)Display all records from the table using select statement −mysql> ... Read More

Get the maximum count of distinct values in a separate column with MySQL

karthikeya Boyini
Updated on 30-Jun-2020 11:19:22

432 Views

Use COUNT() function along with GROUP BY clause for this. Let us first create a table −mysql> create table DemoTable -> ( -> Name 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'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values('Sam'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('John'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('Mike'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values('John'); Query ... Read More

Update column data without using temporary tables in MySQL?

Sharon Christine
Updated on 30-Jun-2020 11:20:32

326 Views

For this, use CASE statement. This will work even without using temporary tables. Let us first create a table −mysql> create table DemoTable    -> (    -> UserName varchar(100),    -> UserStatus varchar(100)    -> ); Query OK, 0 rows affected (0.74 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('John', 'Active'); Query OK, 1 row affected (0.29 sec) mysql> insert into DemoTable values('Chris', 'Inactive'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values('Bob', 'Inactive'); Query OK, 1 row affected (0.32 sec) mysql> insert into DemoTable values('Robert', 'Active'); ... Read More

How to update only day portion of MySQL Date?

Sharon Christine
Updated on 30-Jun-2020 11:21:41

1K+ Views

Let us first create a table −mysql> create table DemoTable -> ( -> AdmissionDate date -> ); Query OK, 0 rows affected (1.38 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('2019-05-12'); Query OK, 1 row affected (0.52 sec) mysql> insert into DemoTable values('2019-05-18'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values('2019-04-19'); Query OK, 1 row affected (0.42 sec)Display all records from the table using select statement −mysql> select *from DemoTable;OutputThis will produce the following output −+---------------+ | AdmissionDate | +---------------+ | 2019-05-12 | | 2019-05-18 ... Read More

Pad the displayed value of the field with zeros up to the display width specified in the column definition in MySQL?

Sharon Christine
Updated on 30-Jun-2020 11:23:59

97 Views

Use zerofill for this in MySQL. Zerofill pads the displayed value of the field with zeros up to the display width specified in the column definition. For example, if column is set int(8), therefore the width is 8. If the number is let’s say 29654, then zero will be padded on the left for total width i.e.8 −00029654Let us first create a table −mysql> create table DemoTable -> ( -> Number int(8) zerofill -> ); 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 ... Read More

Fetch a single ordered date from a column with MySQL LIMIT

Sharon Christine
Updated on 30-Jun-2020 11:24:45

112 Views

To fetch a single date from a column, use “LIMIT 1. To order it, use ORDER BY clause. Let us first create a table −mysql> create table DemoTable -> ( -> DueDate varchar(100) -> ); Query OK, 0 rows affected (1.16 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('10-06-2019'); Query OK, 1 row affected (0.42 sec) mysql> insert into DemoTable values('01-12-2016'); Query OK, 1 row affected (0.52 sec) mysql> insert into DemoTable values('31-01-2018'); Query OK, 1 row affected (0.58 sec)Display all records from the table using select statement −mysql> select *from DemoTable;OutputThis ... Read More

Fetch records containing a specific character twice in MySQL

Rama Giri
Updated on 30-Jul-2019 22:30:26

302 Views

Let us first create a table −mysql> create table DemoTable    -> (    -> Words text    -> ); Query OK, 0 rows affected (0.54 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Ever'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values('Forever'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('Good'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('Never'); Query OK, 1 row affected (0.12 sec)Display all records from the table using select statement −mysql> select *from DemoTable;Output+---------+ | Words ... Read More

How to get the data associated with the maximum id in a MySQL table?

Kumar Varma
Updated on 30-Jul-2019 22:30:26

118 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 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(303); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values(560); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(100); Query OK, 1 row affected (0.13 sec) mysql> insert ... Read More

Count the number of distinct values in MySQL?

Rama Giri
Updated on 30-Jul-2019 22:30:26

223 Views

Let us first create a table −mysql> create table DemoTable    -> (    -> Name varchar(100),    -> Code varchar(100)    -> ); Query OK, 0 rows affected (0.54 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Chris', '0001'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values('Robert', '0002'); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable values('Robert', '0003'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('Chris', '0001'); Query OK, 1 row affected (0.12 sec)Display all records from the table using ... Read More

MySQL query to select rows except first row in descending order?

Kumar Varma
Updated on 30-Jul-2019 22:30:26

906 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 into DemoTable values(20); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values(30); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values(40); Query OK, 1 row affected (0.15 sec)Display all records from the table using select statement −mysql> select *from DemoTable;Output+--------+ | Amount ... Read More

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