语法#

SELECT column1, column2, columnN
FROM table_name
WHERE [CONTION | EXPRESSION];

布尔表达式#

SELECT * FROM COMPANY WHERE SALARY = 10000;

数值表达式#

SELECT numerical_expression as OPERATION_NAME
[FROM table_name WHERE CONDITION];

--

SELECT (15 / 6) AS ADDITION
SELECT COUNT(*) AS "RECORDS" FROM COMPANY;

日期表达式#

SELECT CURRENT_TIMESTAMP;