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SQL As Understood By SQLite

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Comments are not SQL commands, but can occur within the text of SQL queries passed to sqlite3_prepare_v2() and related interfaces. Comments are treated as whitespace by the parser. Comments can begin anywhere whitespace can be found, including inside expressions that span multiple lines.

SQL comments begin with two consecutive "-" characters (ASCII 0x2d) and extend up to and including the next newline character (ASCII 0x0a) or until the end of input, whichever comes first.

C-style comments begin with "/*" and extend up to and including the next "*/" character pair or until the end of input, whichever comes first. C-style comments can span multiple lines.

Comments can appear anywhere whitespace can occur, including inside expressions and in the middle of other SQL statements. Comments do not nest.