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To modify a view, you use the ALTER VIEW statement. The syntax of the ALTER VIEW statement is similar to the CREATE VIEW statement except that the CREATE keyword is replaced by the ALTER keyword. How do I edit a view in MySQL? To modify a view, you use the ALTER VIEW statement. The syntax of the ALTER VIEW statement …
A query can give you an answer to a simple question, perform calculations, combine data from different tables, add, change, or delete data from a database. Since queries are so versatile, there are many types of queries and you would create a type of query based on the task. What are examples of query language? Cypher is a query language …
SQL is a powerful tool for communicating with database management systems. When you write SQL queries, you give instructions to the computer, and it performs these instructions—it sounds like programming. However, you cannot build an application with SQL as you can with Python or Java. Is SQL a tool or software? SQL is a powerful tool for communicating with database …
You can comment out or uncomment a single line of code in an SQL statement, multiple adjacent lines of code, a complete SQL statement, or multiple adjacent SQL statements. The syntax for a comment in a line of SQL code is a double hyphen ( — ) at the beginning of the line. How do you comment out a block …
Single line comments start with — . Any text between — and the end of the line will be ignored (will not be executed). Can you comment out a line in SQL? You can comment out or uncomment a single line of code in an SQL statement, multiple adjacent lines of code, a complete SQL statement, or multiple adjacent SQL …
Syntax Using /* and */ symbols In MySQL, a comment that starts with /* symbol and ends with */ and can be anywhere in your SQL statement. This method of commenting can span several lines within your SQL. How do you comment multiple lines in MySQL? Multi-line comments start with /* and end with */ . Any text between /* …
Comments in C Comments can be used to explain code, and to make it more readable. It can also be used to prevent execution when testing alternative code. Comments can be singled-lined or multi-lined. What is comment give example? In general, a comment is a remark, suggestion, or another form of feedback about a product or service. What is comment …
Single-line comments start with two forward slashes ( // ). Any text between // and the end of the line is ignored by the compiler (will not be executed).
The second part of a SQL query is the name of the column you want to retrieve for each record you are getting. You can obviously retrieve multiple columns for each record, and (only if you want to retrieve all the columns) you can replace the list of them with * , which means “all columns”. Should you use * …
There are two types of SQL comments: simple comments. Simple comments are introduced by two consecutive hyphens (–) and end with the end of line. bracketed comments. What is the comment tag in SQL? A comment can appear between any keywords, parameters, or punctuation marks in a statement. You can include a comment in a statement in two ways: Begin …