AmitDiwan has Published 11365 Articles

How to create an INT field (not a primary key) that begins at 1000 with auto_increment in MySQL?

AmitDiwan

AmitDiwan

Updated on 23-Aug-2019 08:39:56

126 Views

For this, you need to set AUTO_INCREMENT as 1000 −alter table yourTableName AUTO_INCREMENT = 1000;Let us first create a table −mysql> create table DemoTable639 (    StudentId int PRIMARY KEY,    StudentStartId int AUTO_INCREMENT,    StudentName VARCHAR(50),    INDEX(StudentStartId) ); Query OK, 0 rows affected (0.86 sec)Following is the query ... Read More

Set special characters on values if condition is true in MySQL?

AmitDiwan

AmitDiwan

Updated on 23-Aug-2019 08:33:30

72 Views

For conditions, use IF(). Let us first create a table −mysql> create table DemoTable637    (ClientId int NOT NULL AUTO_INCREMENT PRIMARY KEY, ClientName varchar(100), ClientAge int ); Query OK, 0 rows affected (0.82 sec)Insert some records in the table using insert command −mysql> insert into DemoTable637(ClientName, ClientAge) values('Chris', 23); Query ... Read More

Implement two conditions for a single column in MySQL for null and empty value

AmitDiwan

AmitDiwan

Updated on 23-Aug-2019 08:27:21

93 Views

Let us first create a table −mysql> create table DemoTable635(    EmployeId int NOT NULL AUTO_INCREMENT PRIMARY KEY, EmployeeName varchar(100) ); Query OK, 0 rows affected (1.24 sec)Insert some records in the table using insert command −mysql> insert into DemoTable635(EmployeeName) values('John'); Query OK, 1 row affected (0.20 sec) mysql> insert ... Read More

MySQL query to display ranks of multiple columns?

AmitDiwan

AmitDiwan

Updated on 23-Aug-2019 08:09:28

297 Views

For this, use FIND_IN_SET() method. Let us first create a table −mysql> create table DemoTable634 (FirstName varchar(100), Marks int, Age int); Query OK, 0 rows affected (0.69 sec)Insert some records in the table using insert command −mysql> insert into DemoTable634 values('John', 60, 23); Query OK, 1 row affected (0.16 sec) ... Read More

Update a table based on StudentId value in MySQL?

AmitDiwan

AmitDiwan

Updated on 23-Aug-2019 08:05:49

118 Views

Let us first create a table −mysql> create table DemoTable633 (StudentId char(2) not null primary key, StudentName varchar(100)); Query OK, 0 rows affected (1.06 sec)Insert some records in the table using insert command −mysql> insert into DemoTable633 values('10', 'Chris'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable633 ... Read More

Storing value from a MySQL SELECT statement to a variable?

AmitDiwan

AmitDiwan

Updated on 23-Aug-2019 07:54:46

534 Views

Let us first create a table −mysql> create table DemoTable631 (    StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentName varchar(100) ); Query OK, 0 rows affected (0.83 sec)Insert some records in the table using insert command −mysql> insert into DemoTable631(StudentName) values('John Smith'); Query OK, 1 row affected (0.17 sec) ... Read More

How to update the date format in MySQL?

AmitDiwan

AmitDiwan

Updated on 23-Aug-2019 07:51:27

525 Views

Let us first create a table −mysql> create table DemoTable630 (ArrivalDate varchar(100)); Query OK, 0 rows affected (0.55 sec)Insert some records in the table using insert command −mysql> insert into DemoTable630 values('2015-21-01'); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable630 values('2018-25-12'); Query OK, 1 row affected (0.15 ... Read More

How to escape '%' character on the left and middle part of strings in a MySQL column?

AmitDiwan

AmitDiwan

Updated on 23-Aug-2019 07:48:55

102 Views

Let us first create a table −mysql> create table DemoTable629 (StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentSubject text); Query OK, 0 rows affected (0.77 sec)Insert some records in the table using insert command −mysql> insert into DemoTable629(StudentSubject) values('MySQL%'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable629(StudentSubject) ... Read More

MySQL to get only the floating-point numbers from a list of values in a column

AmitDiwan

AmitDiwan

Updated on 23-Aug-2019 07:38:43

382 Views

Let us first create a table −mysql> create table DemoTable628 (Value DECIMAL(10, 2)); Query OK, 0 rows affected (0.52 sec)Insert some records in the table using insert command −mysql> insert into DemoTable628 values(10.97); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable628 values(20.04); Query OK, 1 row affected ... Read More

Convert the case of every value in a MySQL Column to uppercase

AmitDiwan

AmitDiwan

Updated on 23-Aug-2019 07:32:02

237 Views

For this, use UPPER() on MySQL column. Let us first create a table −mysql> create table DemoTable627 (Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, FirstName varchar(100)); Query OK, 0 rows affected (0.62 sec)Insert some records in the table using insert command −mysql> insert into DemoTable627(FirstName) values(UPPER('John')); Query OK, 1 row ... Read More

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