data type for contact number in sql I want to input telephone number in a form including country code extension create table if not exists employee country code tel int 11 tel number int 10 extension int 10 mobile bigint 20
Phone numbers are made of numbers Using varchar allows user to store any type of formatting with or not with or and it quickly creates a mess with your data A phone format is country dependent the mask should be tied to the country In 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 UNSIGNED or ZEROFILL If you add the UNSIGNED option MySQL disallows negative values for the column
data type for contact number in sql
data type for contact number in sql
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Using varchar is pretty inefficient use the money type and create a user declared type phonenumber out of it and create a rule to only allow positive numbers if you declare it as 19 4 you can even store a 4 digit extension and be big enough for international numbers and only takes 9 bytes of storage Use TINYTEXT to Store Phone Numbers in MySQL Use VARCHAR to Store Phone Numbers in MySQL MySQL offers various convenient data types for storing expected input to its databases Knowledge of the correct datatype for storing peculiar data is key to ensuring an optimized and efficient database
If the phone number is stored as a numeric value which it shouldn t be you can use the FORMAT function to format it as phone number Example SELECT FORMAT 0234567890 000 000 0000 Result 023 456 7890 The first argument is the phone number and the second argument is the format string Choose VARCHAR or CHAR data type for storing phone numbers in SQL to accommodate formatting and international codes
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Learn which SQL data type is best for storing phone numbers effectively VARCHAR CHAR or INT Choose the right type for optimal database performance Contact Number It should be a numeric field Pin Code We might expect both alphabets and numeric fields in this column We store all these columns data in a table of SQL Server We can use various data types in SQL Server and use them as per the requirement Let s explore the SQL Server data types Categories of SQL Server data
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