The document discusses various mathematical equations and formulas. It outlines 5 equations involving variables such as l, D, and numbers like 1, 2, 3, and 5. The equations are used to calculate relationships between the different variables using operations like addition, subtraction, division and parentheses.
The document discusses various mathematical equations and formulas. It outlines 5 equations involving variables such as l, D, and numbers like 1, 2, 3, and 5. The equations are used to calculate relationships between the different variables using operations like addition, subtraction, division and parentheses.
6. WHERE句
演算子とキーワードを用いて条件文を指定する
演算子( = , < , > , <= , >= )
演算子の左右を比較する
例:WHERE age <= 19
LIKE
ワイルドカード( % , _ )を指定する
例:WHERE name LIKE naka%
AND , OR
複数の条件文を指定する
例:WHERE id = 8 OR id = 23
NOT
条件を反転させる(否定)
例:WHERE NOT age <= 19