Documentation page https://docs.snowflake.com/en/sql-reference/sql/create-table.html
What could [ ... ] near the end of the following diagrams stand for?
CREATE [ OR REPLACE ] TABLE <table_name> [ ( <col_name> [ <col_type> ] , <col_name> [ <col_type> ] , ... ) ]
[ CLUSTER BY ( <expr> [ , <expr> , ... ] ) ]
[ COPY GRANTS ]
AS SELECT <query>
[ ... ]
CREATE [ OR REPLACE ] TABLE <table_name>
[ COPY GRANTS ]
USING TEMPLATE <query>
[ ... ]
CREATE [ OR REPLACE ] TABLE <table_name> LIKE <source_table>
[ CLUSTER BY ( <expr> [ , <expr> , ... ] ) ]
[ COPY GRANTS ]
[ ... ]
CREATE [ OR REPLACE ] TABLE <name> CLONE <source_table>
[ { AT | BEFORE } { TIMESTAMP => <timestamp> | OFFSET => <time_difference> | STATEMENT => <id> } ]
[ COPY GRANTS ]
[ ... ]
The [ ... ] is not documented in https://docs.snowflake.com/en/sql-reference/conventions.html .