commands. A command is composed of a sequence of tokens, ter- minated by a semicolon (“;”). The end of the input stream also terminates a command. Which tokens are valid depends on the syntax of the particular word, an identifier, a quoted identifier, a literal (or constant), or a special character symbol. Tokens are normally separated by whitespace (space, tab, newline), but need not be if there is no ambiguity adjacent to some other token type). Additionally, comments can occur in SQL input. They are not tokens, they are effectively equivalent to whitespace. For example, the following is (syntactically) valid

commands. A command is composed of a sequence of tokens, terminated by a semicolon (“;”). The end of the input stream also terminates a command. Which tokens are valid depends on the syntax of the particular word, an identifier, a quoted identifier, a literal (or constant), or a special character symbol. Tokens are normally separated by whitespace (space, tab, newline), but need not be if there is no ambiguity adjacent to some other token type). Additionally, comments can occur in SQL input. They are not tokens, they are effectively equivalent to whitespace. For example, the following is (syntactically) valid

commands. A command is composed of a sequence of tokens, terminated by a semicolon (“;”). The end of the input stream also terminates a command. Which tokens are valid depends on the syntax of the particular word, an identifier, a quoted identifier, a literal (or constant), or a special character symbol. Tokens are normally separated by whitespace (space, tab, newline), but need not be if there is no ambiguity adjacent to some other token type). Additionally, comments can occur in SQL input. They are not tokens, they are effectively equivalent to whitespace. For example, the following is (syntactically) valid

commands. A command is composed of a sequence of tokens, ter- minated by a semicolon (“;”). The end of the input stream also terminates a command. Which tokens are valid depends on the syntax of the particular word, an identifier, a quoted identifier, a literal (or constant), or a special character symbol. Tokens are normally separated by whitespace (space, tab, newline), but need not be if there is no ambiguity adjacent to some other token type). Additionally, comments can occur in SQL input. They are not tokens, they are effectively equivalent to whitespace. For example, the following is (syntactically) valid

commands. A command is composed of a sequence of tokens, ter- minated by a semicolon (“;”). The end of the input stream also terminates a command. Which tokens are valid depends on the syntax of the particular word, an identifier, a quoted identifier, a literal (or constant), or a special character symbol. Tokens are normally separated by whitespace (space, tab, newline), but need not be if there is no ambiguity not tokens, they are effectively equivalent to whitespace. The SQL syntax is not very consistent regarding what tokens identify commands and which are operands or parameters. The first few tokens are

commands. A command is composed of a sequence of tokens, terminated by a semicolon (“;”). The end of the input stream also terminates a command. Which tokens are valid depends on the syntax of the particular word, an identifier, a quoted identifier, a literal (or constant), or a special character symbol. Tokens are normally separated by whitespace (space, tab, newline), but need not be if there is no ambiguity not tokens, they are effectively equivalent to whitespace. The SQL syntax is not very consistent regarding what tokens identify commands and which are operands or parameters. The first few tokens are

commands. A command is composed of a sequence of tokens, ter- minated by a semicolon (“;”). The end of the input stream also terminates a command. Which tokens are valid depends on the syntax of the particular word, an identifier, a quoted identifier, a literal (or constant), or a special character symbol. Tokens are normally separated by whitespace (space, tab, newline), but need not be if there is no ambiguity not tokens, they are effectively equivalent to whitespace. The SQL syntax is not very consistent regarding what tokens identify commands and which are operands or parameters. The first few tokens are

commands. A command is composed of a sequence of tokens, terminated by a semicolon (“;”). The end of the input stream also terminates a command. Which tokens are valid depends on the syntax of the particular word, an identifier, a quoted identifier, a literal (or constant), or a special character symbol. Tokens are normally separated by whitespace (space, tab, newline), but need not be if there is no ambiguity not tokens, they are effectively equivalent to whitespace. The SQL syntax is not very consistent regarding what tokens identify commands and which are operands or parameters. The first few tokens are

commands. A command is composed of a sequence of tokens, terminated by a semicolon (“;”). The end of the input stream also terminates a command. Which tokens are valid depends on the syntax of the particular word, an identifier, a quoted identifier, a literal (or constant), or a special character symbol. Tokens are normally separated by whitespace (space, tab, newline), but need not be if there is no ambiguity not tokens, they are effectively equivalent to whitespace. The SQL syntax is not very consistent regarding what tokens identify commands and which are operands or parameters. The first few tokens are

commands. A command is composed of a sequence of tokens, ter- minated by a semicolon (“;”). The end of the input stream also terminates a command. Which tokens are valid depends on the syntax of the particular word, an identifier, a quoted identifier, a literal (or constant), or a special character symbol. Tokens are normally separated by whitespace (space, tab, newline), but need not be if there is no ambiguity not tokens, they are effectively equivalent to whitespace. The SQL syntax is not very consistent regarding what tokens identify commands and which are operands or parameters. The first few tokens are