Here, let’s say you have a string with form “StringSeparatorNumber” form like John/56989. Now if you want to remove the number after separator /, then use the SUBSTRING_INDEX(). Let us first create a table −mysql> create table DemoTable (    StudentName varchar(100) ); Query OK, 0 rows affected (1.05 sec)Insert ... Read More

For thus, use MySQL REPLACE(). Let us first create a table −mysql> create table DemoTable (    FolderLocation text ); Query OK, 0 rows affected (0.80 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('C/ProgramFiles/AllMySQLProgram'); Query OK, 1 row affected (0.13 sec) mysql> insert into ... Read More

Yes, we can check for a blank string and 0 in a single condition. Let us first create a table −mysql> create table DemoTable (    ClientId varchar(40) ); Query OK, 0 rows affected (1.01 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('CLI-01'); Query ... Read More

To collapse rows into a comma-delimited list, use GROUP_CONCAT(). Let us first create a table −mysql> create table DemoTable (    Id int,    Name varchar(40) ); Query OK, 0 rows affected (0.52 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(100, 'Chris Brown'); Query ... Read More

In MySQL, you can achieve sp_help with the help of SHOW CREATE command.CASE 1 −For table, the syntax is as follows −SHOW CREATE TABLE yourTableName;CASE 2 −For stored procedure, the syntax is as follows −SHOW CREATE PROCEDURE yourProcedureName;Let us first create a table −mysql> create table DemoTable (    EmployeeId ... Read More

For this, you can use SUBSTRING_INDEX(). Let us first create a table −mysql> create table DemoTable (    Words TEXT ); Query OK, 0 rows affected (1.62 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Learn With Ease'); Query OK, 1 row affected (0.32 sec) ... Read More

Let us first create a table −mysql> create table DemoTable (    ClientId int NOT NULL AUTO_INCREMENT PRIMARY KEY,    ClientName varchar(40),    ClientAge int,    ClientCountryName varchar(40) ); Query OK, 0 rows affected (0.57 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(ClientName, ClientAge, ClientCountryName) ... Read More

To make a date column null, use ALTER TABLE and MODIFY and set the date to NULL. Following is the syntax −alter table yourTableName modify column yourColumnName date NULL;Let us first create a table. Here, we have set the column as NOT NULL −mysql> create table DemoTable (    ShippingDate ... Read More

The syntax is as follows to get the column names of a table −select column_name from information_schema.columns where table_schema='yourDatabaseName' and table_name=’yourTableName’;Let us first create a table −mysql> create table DemoTable (    EmployeeId int,    EmployeeFirstName varchar(20),    EmployeeLastName varchar(20),    EmployeeAge int,    EmployeeCountryName varchar(40),    IsMarried tinyint(1),   ... Read More

To check if field of a table has NOT NULL property, you can use any of the two syntaxes. The first syntax is as follows −desc yourTableName;Following is the second syntax −select column_name,    is_nullable    from information_schema.columns    where table_schema = ‘yourDatabaseName’    and table_name = 'yourTableName’;Let us first ... Read More