SELECT column1, column2, ...
FROM table_name;

SELECT DISTINCT column1, column2, ...
FROM table_name;

SELECT column1, column2, ...
FROM table_name
WHERE condition;

SELECT column1, column2, ...
FROM table_name
WHERE condition1 AND condition2 AND condition3 ...;

SELECT column1, column2, ...
FROM table_name
WHERE condition1 OR condition2 OR condition3 ...;

SELECT column1, column2, ...
FROM table_name
WHERE NOT condition;

SELECT column1, column2, ...
FROM table_name
ORDER BY column1, column2, ... ASC|DESC;

INSERT INTO table_name (column1, column2, column3, ...)
VALUES (value1, value2, value3, ...);

SELECT CustomerName, ContactName, Address
FROM Customers
WHERE Address IS NOT NULL;

UPDATE table_name
SET column1 = value1, column2 = value2, ...
WHERE condition;

DELETE FROM table_name WHERE condition;

SELECT TOP number|percent column_name(s)
FROM table_name
WHERE condition;;

SELECT column_name(s)
FROM table_name
WHERE condition
LIMIT number;

SELECT column_name(s)
FROM table_name
WHERE ROWNUM <= number;

SELECT MIN(column_name)
FROM table_name
WHERE condition;

SELECT MAX(column_name)
FROM table_name
WHERE condition;

SELECT COUNT(column_name)
FROM table_name
WHERE condition;

SELECT AVG(column_name)
FROM table_name
WHERE condition;

SELECT SUM(column_name)
FROM table_name
WHERE condition;

SELECT column_name(s)
FROM table1
INNER JOIN table2
ON table1.column_name = table2.column_name;

SELECT column_name(s)
FROM table1
LEFT JOIN table2
ON table1.column_name = table2.column_name;

SELECT column_name(s)
FROM table1
RIGHT JOIN table2
ON table1.column_name = table2.column_name;

SELECT column_name(s)
FROM table1
FULL OUTER JOIN table2
ON table1.column_name = table2.column_name
WHERE condition;

SELECT column_name(s)
FROM table1
FULL OUTER JOIN table2
ON table1.column_name = table2.column_name
WHERE condition;

ALTER TABLE table_name
ADD column_name datatype;

ALTER TABLE Customers
ADD Email varchar(255);