![]() Numeric types can be signed or unsigned, except BIT. MySQL has numeric data types for integer, fixed-point, floating-point, and bit values, as shown in the table below. ![]() What are the Numeric Data Types in MySQL? One can view all the databases on the MySQL server host using the following command: In MySQL, the DELETE statement is used to delete records from a table: DELETE FROM table_name Indexes speed up performance by either ordering the data on disk so it's quicker to find your result or, telling the SQL engine where to go to find your data.Įxample: Adding indexes to the history table: ALTER TABLE history ADD INDEX(author(10)) ĪLTER TABLE history ADD INDEX(title(10)) ĪLTER TABLE history ADD INDEX(category(5)) ĭESCRIBE history 14. You can achieve fast searches with the help of an index. In MySQL, there are different index types, such as a regular INDEX, a PRIMARY KEY, or a FULLTEXT index. ![]() You can remove a column by using the DROP keyword: How do you remove a column from a database? The INSERT INTO syntax would be as follows: INSERT INTO table_name However, the order of the values should be in the same order as the columns in the table. If we want to add values for all the columns of the table, we do not need to specify the column names in the SQL query. The INSERT INTO statement is used to add new records to a MySQL table: INSERT INTO table_name (column1, column2, column3.) Use the following to create a table using MySQL: CREATE TABLE history ( Use the following command to create a new database called ‘books’:ĬREATE DATABASE books 10. What are some of the common MySQL commands? Commandĩ. What are Transaction Storage Engines in MySQL?Ĩ. Can you explain the logical architecture of MySQL? What are the types of relationships used in MySQL? What are the MySQL clients and utilities? How do you create and execute views in MySQL? What are the Temporal Data Types in MySQL? What are some of the common MySQL commands? What are some of the advantages of using MySQL?
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