Which character does the mysql client program Recognise as a statement delimiter?
By default, mysql itself recognizes the semicolon as a statement delimiter, so you must redefine the delimiter temporarily to cause mysql to pass the entire stored program definition to the server.
Which character Cannot be used as delimiter?
The delimiter must be a single character. The delimiter cannot be letter or a digit. A double quote (“) character cannot be used as the delimiter. This is because the double quote character is used to delimit a quoted-field.
What is delimiter in mysql?
You define a DELIMITER to tell the mysql client to treat the statements, functions, stored procedures or triggers as an entire statement. Normally in a . sql file you set a different DELIMITER like $$. The DELIMITER command is used to change the standard delimiter of MySQL commands (i.e. ;).
What triggers MySQL?
A trigger in MySQL is a set of SQL statements that reside in a system catalog. It is a special type of stored procedure that is invoked automatically in response to an event. Each trigger is associated with a table, which is activated on any DML statement such as INSERT, UPDATE, or DELETE.
Can any character be a delimiter?
Any character may be used to separate the values, but the most common delimiters are the comma, tab, and colon. … In a comma-separated values (CSV) file the data items are separated using commas as a delimiter, while in a tab-separated values (TSV) file, the data items are separated using tabs as a delimiter.
What is the least used character?
In addition, while the less common symbols—including the ampersand—are the least common of all characters, a comma is actually seen more often than certain letters of the alphabet, such as ‘v’ or ‘j’.
What is a good delimiter for string?
If you have the option of a string as column separator, use “” as delimiter. You can make up any string for that matter and gives you flexibility.
What are types of trigger?
What are the types of triggers?
- DDL Trigger.
- DML Trigger.
- Logon Trigger.
Why delimiter is used in MySQL procedure?
Delimiters can be used when you need to define the stored procedures, function as well as to create triggers. The default delimiter is semicolon. You can change the delimiters to create procedures and so on.
What Cannot be done on a view?
What cannot be done on a view? Explanation: In MySQL, ‘Views’ act as virtual tables. It is not possible to create indexes on a view. However, they can be used for the views that are processed using the merge algorithm.
What is the command to see the warning messages?
Correct Option: B
The SHOW WARNINGS command is used after executing one of those statements to see the warning messages.
Why MyISAM gives the best performance?
MyISAM is designed with the idea that your database is queried far more than its updated and as a result it performs very fast read operations. If your read to write(insert|update) ratio is less than 15% its better to use MyISAM.