The three basic logical operators in SQL are AND, OR, and NOT. In the query below, we’ll use OR to get salaries below 3,000 or above 5,000.QuerySELECT first_name, last_name, salary FROM employees WHERE salary > 5000 OR salary < 3000;...
A combination of identifiers, operators, constants, and functions that evaluates to a single value. >= Products.[Unit Price] Top of Page Basic SQL clauses: SELECT, FROM, and WHERE A SQL statement takes the general form: SELECT field_1 ...
There are some important rules when using these operators, though. If you're using an operator with values that are non-numeric, you need to put the value in single quotes:'value'. Note:SQL uses single quotes to reference column values. ...
PL/SQL - Operators PL/SQL - Conditions PL/SQL - Loops PL/SQL - Strings PL/SQL - Arrays PL/SQL - Procedures PL/SQL - Functions PL/SQL - Cursors PL/SQL - Records PL/SQL - Exceptions PL/SQL - Triggers PL/SQL - Packages PL/SQL - Collections PL/SQL - Transactions PL/SQL - Date...
Answer: C.SQL statements are not case sensitive. Column Heading Defaults: 默认的列标题(表的第一行): Arithmetic expressionsandNULLvalues in theSELECTstatement SELECT语句中的算术表达式和空值 首先介绍显示表结构的命令 DESCRIBEcommand 描述命令:显示表结构 ...
Learn the basic SQL operations in Apache Presto, including querying, filtering, and data manipulation techniques to optimize your data analysis.
In This Section Reference Related Sections Applies to:SQL Server The following fundamental operations apply to most or all queries. In This Section Create Queries (Visual Database Tools) Provides steps for creating new queries. Open Queries (Visual Database Tools) ...
The comparison operators include equal to (=), greater than (>), and less than (<). The logical operators include AND, OR, and NOT. The NULL operators include IS NULL and IS NOT NULL. Comparison operators: If you use the equal to (=) operator in the WHERE clause, data of rows ...
SQL Query of Data of Multiple Sources Storm Tez YARN ZooKeeper Functions Constraints Technical Support Billing Permissions Management Related Services Quota Description Common Concepts Billing Getting Started User Guide Component Operation Guide (Normal) Component Operation Guide (LTS) Best Practices Developer...
Execution Plan Data Permissions Data Types User-Defined Functions Built-In Functions SELECT Basic Statements Sort Grouping Joins Clauses Alias Set Operations WITH...AS CASE...WHEN Identifiers Operators Flink SQL Syntax Reference API Reference SDK Reference FAQs Videos SQL Syntax Reference (To Be ...