WebLet us take a few examples of phone number storage with each data type to decide the most appropriate choice. Use CHAR to Store Phone Numbers in MySQL. The CHAR datatype (short for character) can store strings of fixed length between 0 and 255 characters. A column implementing CHAR can specify an upper limit constraint between 0 and 255, and ... Webcreate table phone_numbers ( user_id bigint, phone_num_type varchar (25), phone_num varchar (50), primary key (user_id, phone_num_type) ) Unused length in a varchar is "free", so make it longer than the possible phone number on Earth, including country code, so you don't have to worry about it.

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WebNov 3, 2016 · Some phone numbers generally use hyphens and possibly parentheses. Also, you might need to indicate the country code before the phone number such as +46 5555-555555. Keep in mind also, that not all phone numbers have the same number of digits for area codes and exchanges in different countries. WebNov 4, 2024 · If you are working with hibernate and created an entity that has one field like a phone number, you should declare that as a string to store a phone number that has non-numeric digits. In hibernate, this entity class maps to the table in MySQL or Oracle database and uses varchar type to store the phone number. diabetic with critically low potassium

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http://zditect.com/guide/mysql/mysql-phone-number-format.html WebFeb 8, 2024 · MySQL generally has three data types: Numeric ( INT, BIT, FLOAT, etc.) String ( CHAR, VARCHAR, TEXT, etc.) Date and Time ( DATE, DATETIME, TIMESTAMP, etc.) These … WebIn MySQL there are three main data types: string, numeric, and date and time. String Data Types Numeric Data Types Note: All the numeric data types may have an extra option: … diabetic with daily nosebleeds