mysql – Juyal Ahmed

mySql Type Casting

Some times in SQL query you need to change the data type of table field with keeping the table structure as it is. Some thing like Integer to string, string to integer, string to date etc…. This type of data type conversion is known as data type casting. For this operation in SQL you canContinue reading “mySql Type Casting”

what is Database Index in MySql?

If in a Database Table there are no index exist like primary or unique key then when you write a query for search anything from this table of course the search time cost will higher then when you use index in this table. Cause in without index table the search perform must in entire tableContinue reading “what is Database Index in MySql?”