Post by rabia76 on Feb 22, 2024 8:01:12 GMT
Your database Discover the main data types in SQL and the best practices for their use. Choose the data type correctly to optimize the integrity and performance of your database. person-working-html-computer DNC School DNC School February , summary CHAR type VARCHAR type Numeric Types Numeric types in SQL DATE type TIME type DATETIME type BOOLEAN type Importance of choosing data types Good practices when choosing data types Learn more about Data! Conclusion About the author SQL offers a variety of data types for storing information in databases. Choosing the correct data type is crucial to guarantee the integrity and performance of the bank. In this article, we will explore in detail the main SQL data types and best practices for using them. CHAR type The CHAR type is used to store text, also called a string. By default.
Will reserve space for the number of bytes defined when creating the column, regardless of whether the inserted data will occupy all that space or not. CHAR is indicated when the max Austria Mobile Number List imum size that the text will have is known in advance so as not to waste space. Otherwise, you can use VARCHAR. The CHAR type is ideal for storing fixed-length texts. Reserves static space for each record, regardless of the actual text size. Recommended when the maximum text size is known in advance. VARCHAR type VARCHAR is similar to CHAR, but the space occupied varies according to the size of the text inserted in each record. Therefore, VARCHAR is more suitable when the size of the inserted text may vary greatly between records, avoiding wasted space. The VARCHAR type is recommended for texts of variable length. Takes up space according to the actual.
Size of the text in each record. Prevents wasted space when text size varies between records. Numeric Types When you want to store some type of number in the database, without decimal places or monetary values, you can use SQL numeric types , such as INT, BIGINT, among others. Each numerical type has its own characteristics and value ranges, and it is important to choose the most appropriate one for each situation. SQL numeric types are used to store integers. Each numeric type has its own characteristics and value ranges. It is important to choose the most appropriate numerical type for each specific situation. Numeric types in SQL In SQL , you can use different numeric types to store data with defined decimal precision. The INT, FLOAT and DECIMAL types are the most common and each has its specific characteristics. The INT type is ideal.
Will reserve space for the number of bytes defined when creating the column, regardless of whether the inserted data will occupy all that space or not. CHAR is indicated when the max Austria Mobile Number List imum size that the text will have is known in advance so as not to waste space. Otherwise, you can use VARCHAR. The CHAR type is ideal for storing fixed-length texts. Reserves static space for each record, regardless of the actual text size. Recommended when the maximum text size is known in advance. VARCHAR type VARCHAR is similar to CHAR, but the space occupied varies according to the size of the text inserted in each record. Therefore, VARCHAR is more suitable when the size of the inserted text may vary greatly between records, avoiding wasted space. The VARCHAR type is recommended for texts of variable length. Takes up space according to the actual.
Size of the text in each record. Prevents wasted space when text size varies between records. Numeric Types When you want to store some type of number in the database, without decimal places or monetary values, you can use SQL numeric types , such as INT, BIGINT, among others. Each numerical type has its own characteristics and value ranges, and it is important to choose the most appropriate one for each situation. SQL numeric types are used to store integers. Each numeric type has its own characteristics and value ranges. It is important to choose the most appropriate numerical type for each specific situation. Numeric types in SQL In SQL , you can use different numeric types to store data with defined decimal precision. The INT, FLOAT and DECIMAL types are the most common and each has its specific characteristics. The INT type is ideal.