いよいよSQLの実践編。 ここでは データベースとテーブルを作る・見る・変更する ための基本文法を学ぶ。 SQLは「読むだけ」だと身につかない。 CREATE → SHOW → USE → DESCRIBE → ALTER この流れを体に染み込ませるのが最初の関門。 新しいデータベースを作る。

If your business uses relational databases to store data, it helps to use the SQL SELECT command with the INTO clause to create new tables from query results. This method isn't ANSI-standard SQL, but ...

The DICTIONARY tables component is specified in the FROM clause of a SELECT statement. DICTIONARY is a reserved libref for use only in PROC SQL. Data from DICTIONARY tables are generated at run time.

Note: See the appendix for a description of DLIB.OUTOFSTK. You can use the SQL procedure to create a view that joins the data from these three sources and displays their output. The SAS WHERE or ...