Same thing, Just start the table name with # or ##:
CREATE TABLE #TemporaryTable -- Local temporary table - starts with single #
(
Col1 int,
Col2 varchar(10)
....
);
CREATE TABLE ##GlobalTemporaryTable -- Global temporary table - note it starts with ##.
(
Col1 int,
Col2 varchar(10)
....
);
Temporary table names start with # or ## - The first is a local temporary table and the last is a global temporary table.
Here is one of many articles describing the differences between them.