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MySQL Database Tutorial - 5 - Basic Rules for SQL Statements Video Lecture | MySQL (Sequential Query Language) Database Tutorial - Software Development

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FAQs on MySQL Database Tutorial - 5 - Basic Rules for SQL Statements Video Lecture - MySQL (Sequential Query Language) Database Tutorial - Software Development

1. What are the basic rules for SQL statements?
Ans. The basic rules for SQL statements are: - Each SQL statement must end with a semicolon (;) - Keywords and function names are not case-sensitive, but table and column names are case-sensitive - Use single quotes for string values and double quotes for column or table names - SQL statements can span across multiple lines for readability - SQL statements are executed in the order they are written, unless specified otherwise
2. How do I end an SQL statement?
Ans. To end an SQL statement, you need to use a semicolon (;) at the end of the statement. The semicolon acts as a delimiter and indicates the end of the SQL statement. It is important to include the semicolon to ensure that the statement is executed correctly by the database engine.
3. Are keywords and function names case-sensitive in SQL?
Ans. No, keywords and function names in SQL are not case-sensitive. This means that whether you write a keyword or function name in uppercase or lowercase, it will be interpreted the same way by the database engine. However, it is considered good practice to write keywords and function names in uppercase for better readability.
4. Should I use single or double quotes in SQL statements?
Ans. In SQL statements, you should use single quotes (') to enclose string values. For example, if you want to insert a string value into a column, you would write it as 'example'. On the other hand, double quotes (") are used to enclose column or table names. For example, if you have a column named "name", you would refer to it as "name" in your SQL statement.
5. Can SQL statements span across multiple lines?
Ans. Yes, SQL statements can span across multiple lines for readability purposes. This can be particularly useful for complex queries or statements that involve multiple tables and conditions. However, it is important to note that line breaks and white spaces are generally ignored by the database engine when executing the SQL statement, so they do not affect the result of the query.
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