A statement is any text that the database engine recognizes as a valid command. As of SQL-92:
An SQL-statement is a string of characters that conforms to the format and syntax rules specified in this international standard.
A query is a statement that returns a recordset (possibly empty).
How can I call a chunk of SQL code made by more than one statement where statements are separated by a semicolon (;)? Who already replied can edit his answer. Many thanks!
A series of SQL statements sent to the server at once is called a batch.
Not all SQL engines required the statements in a batch to be semicolon delimited. SQL Server, for instance, generally does not and breaks the statements based on context. CTE statements starting with WITH are a notable exception.