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MatrixOne v0.8.0 Documentation
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Datetime

 Github  来源:MatrixOne 浏览 100 扫码 分享 2023-07-06 22:19:38
  • CURDATE()
  • CURRENT_TIMESTAMP()
  • DATE()
  • DATE_ADD()
  • DATE_FORMAT()
  • DATE_SUB()
  • DATEDIFF()
  • DAY()
  • DAYOFYEAR()
  • EXTRACT()
  • FROM_UNIXTIME
  • MONTH()
  • TIMEDIFF()
  • TIMESTAMP()
  • TO_DATE()
  • UNIX_TIMESTAMP
  • UTC_TIMESTAMP()
  • WEEKDAY()
  • YEAR()
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  • MatrixOne v1.1 中文文档
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  • Home
  • Overview
    • MatrixOne Introduction
    • MatrixOne Feature List
    • MatrixOne Feature
      • HTAP
      • Multi-Account
      • Scalability
      • Cost-Effective
      • High Availability
      • MySQL Compatibility
    • MatrixOne Architecture Design
      • Architecture Design Overview
      • Detailed Logservice Architecture
      • Detailed Proxy Architecture
      • Detailed Caching and Hot-Cold Data Separation Architecture
    • What’s New
  • Getting Started
    • Deploy standalone MatrixOne
      • Overview
      • Deploy on macOS
        • Building from source code
        • Using binary package
        • Using Docker
      • Deploy on Linux
        • Building from source code
        • Using binary package
        • Using Docker
    • Basic SQL
  • Developing Guide
    • Connect to MatrixOne
      • Connecting to MatrixOne with Database Client Tool
      • Java connect to MatrixOne
        • Connect MatrixOne with JDBC
        • Connect MatrixOne with Java ORMs
      • Python connect to MatrixOne
      • Connecting to MatrixOne with Golang
      • MatrixOne SSL connection
    • Schema Design
      • Overview
      • Create Database
      • Create Table
      • Create View
      • Create Temporary Table
      • Create Secondary Index
      • Data Integrity
        • Data Integrity Constraints Overview
        • NOT NULL Constraints
        • UNIQUE KEY Constraints
        • PRIMARY KEY Constraints
        • FOREIGN KEY Constraints
    • Import Data
      • Insert
      • Bulk Load
        • Bulk Load Overview
        • Load csv format data
        • Load jsonlines format data
        • Load data from S3
        • Load data by using the `source`
    • Export Data
      • Export data by SELECT INTO
      • Export data by MODUMP
    • Read Data
      • Query Data from a Single Table
      • Multi-table Join Queries
      • Subquery
      • Views
      • Common Table Expression
    • Account Design
      • Publish-Subscribe
    • Transactions
      • General Transaction Overview
      • Transaction by MatrixOne Server
        • Transaction Overview
        • Explicit Transaction
        • Implicit Transaction
        • Pessimistic Transaction
        • Optimistic Transaction
        • Isolation Level
        • MVCC
        • How to use transaction
          • User Guide
          • Scenario
    • Application Developing Tutorials
      • Java CRUD demo
      • SpringBoot and JPA CRUD demo
      • SpringBoot and MyBatis CRUD demo
      • Python CRUD demo
      • SQLAlchemy CRUD demo
      • Golang CRUD demo
  • Deploying
    • Plan MatrixOne Cluster Topology
      • Experience Environment Deployment Plan
      • Minimum Production Environment Deployment Plan
      • Recommended Production Environment Deployment Plan
    • MatrixOne distributed cluster deployment
    • Maintenance
      • Starting and stopping
      • Updating
      • Health check and resource monitoring
      • Scaling
      • Managing CN Groups with Proxy
      • Import data from local Minio to MatrixOne
      • Operator Management
  • Maintenance
    • Backup and Restore
    • Mount Data
      • Mount directory to Docker container
  • Migrating
    • Migrate data to MatrixOne Overview
    • Migrate data from MySQL to MatrixOne
    • Migrate data from SQL Server to MatrixOne
    • Migrate data from SQL Server to MatrixOne
  • Testing
    • Performance Testing
      • SSB Test with MatrixOne
      • TPCH Test with MatrixOne
      • TPCC Test with MatrixOne
    • Testing Tool
      • MO-Tester
      • MO-Tester Specification
  • Performance Tuning
    • SQL Performance Tuning Methods Overview
    • Understanding the Query Execution Plan
      • Query Execution Plan Overview
      • Using EXPLAIN to learn the execution plan
      • Explain Statements Using JOIN
      • Explain Statements Using Subqueries
      • Explain Statements Using Aggregation
      • EXPLAIN Statements Using Views
    • Performance tuning best practices
      • Using Cluster by for performance tuning
      • Scaling CN for better performance
  • Privilege
    • TLS Introduction
    • Password Management
    • What is MatrixOne Privilege Management
      • About MatrixOne Privilege Management
      • Best Practices
    • User Guide
      • Quick Start
        • Create accounts, Verify Resource Isolation
        • Use the new account to creates users, roles, grant the privilege
      • Privileges Management User guide
    • Application Scenario
  • Reference
    • System Variables
      • System Variables Overview
      • System Variables parameters
        • SQL Mode
        • Save query result support
        • Timezone support
        • Lowercase table names support
      • Custom variable
    • SQL Language Structure
      • Keywords
      • Comments
    • Data Types
      • Data Types Overview
      • Data Type Conversion
      • Timestamp Initialization
      • JSON Data Type
      • BLOB and TEXT Type
      • Fixed-Point Types (Exact Value) - DECIMAL
    • SQL Statements
      • Data Definition Language
        • CREATE DATABASE
        • CREATE INDEX
        • CREATE TABLE
        • CREATE EXTERNAL TABLE
        • CREATE PUBLICATION
        • CREATE SEQUENCE
        • CREATE…FROM…PUBLICATION…
        • CREATE VIEW
        • ALTER TABLE
        • ALTER PUBLICATION
        • ALTER VIEW
        • DROP DATABASE
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        • DROP TABLE
        • DROP PUBLICATION
        • DROP SEQUENCE
        • DROP VIEW
        • TRUNCATE TABLE
      • Data Manipulation Language
        • INSERT
        • INSERT INTO SELECT
        • INSERT ON DUPLICATE KEY UPDATE
        • DELETE
        • UPDATE
        • LOAD DATA
        • Information Functions
          • CURRENT_USER()
          • CURRENT_ROLE()
          • LAST_QUERY_ID()
          • LAST_INSERT_ID()
      • Data Query Language
        • SELECT
        • SUBQUERY
          • SUBQUERY Overview
          • Derived Tables
          • Comparisons Using Subqueries
          • SUBQUERY with ANY or SOME
          • SUBQUERY with ALL
          • SUBQUERY with EXISTS
          • SUBQUERY with IN
        • JOIN
          • JOIN Overview
          • INNER JOIN
          • LEFT JOIN
          • RIGHT JOIN
          • FULL JOIN
          • OUTER JOIN
          • NATURAL JOIN
        • With CTE
        • Combining Queries
          • Combining Queries Overview
          • UNION
          • INTERSECT
          • MINUS
      • Data Control Language
        • CREATE ACCOUNT
        • ALTER ACCOUNT
        • CREATE ROLE
        • CREATE USER
        • ALTER USER
        • DROP ACCOUNT
        • DROP USER
        • DROP ROLE
        • GRANT
        • REVOKE
      • Other
        • SHOW
          • SHOW ACCOUNTS
          • SHOW DATABASES
          • SHOW CREATE TABLE
          • SHOW CREATE VIEW
          • SHOW CREATE PUBLICATION
          • SHOW TABLES
          • SHOW INDEX
          • SHOW COLLATION
          • SHOW COLUMNS
          • SHOW FUNCTION STATUS
          • SHOW GRANT
          • SHOW PUBLICATIONS
          • SHOW ROLES
          • SHOW SEQUENCES
          • SHOW SUBSCRIPTIONS
          • SHOW VARIABLES
        • SET
          • SET ROLE
        • USE
          • USE DATABASE
        • KILL
        • Prepared Statements
          • Prepared Statements Overview
          • PREPARE
          • EXECUTE
          • DEALLOCATE
        • Explain
          • EXPLAIN
          • EXPLAIN Output Format
          • Explain Analyze
    • Functions and Operators
      • Operators
        • INTERVAL
        • OPERATORS
          • OPERATORS Overview
          • OPERATORS Precedence
          • Arithmetic Operators
            • Arithmetic Operators Overview
            • %,MOD
            • *
            • +
            • -
            • -
            • /
            • DIV
          • Assignment Operators
            • Assignment Operators Overview
            • \=
          • Bit Functions and Operators
            • Bit Functions and Operators Overview
            • &
            • >>
            • <<
            • ^
            • |
            • ~
          • Cast Functions and Operators
            • Cast Functions and Operators Overview
            • CAST
            • CONVERT
          • Comparison Functions and Operators
            • Comparison Functions and Operators Overview
            • >
            • >=
            • <
            • <>,!=
            • <=
            • \=
            • BETWEEN … AND …
            • IN
            • IS
            • IS NOT
            • IS NOT NULL
            • IS NULL
            • LIKE
            • NOT BETWEEN … AND …
            • NOT LIKE
            • COALESCE
          • Flow Control Functions
            • Flow Control Functions Overview
            • CASE WHEN
            • IF
          • Logical Operators
            • Logical Operators Overview
            • AND,&&
            • NOT,!
            • OR
            • XOR
      • Functions
        • Aggregate Functions
          • ANY_VALUE
          • AVG
          • BIT_AND
          • BIT_OR
          • BIT_XOR
          • COUNT
          • GROUP_CONCAT
          • MAX
          • MEDIAN
          • MIN
          • STDDEV_POP
          • SUM
          • VARIANCE
        • Datetime
          • CURDATE()
          • CURRENT_TIMESTAMP()
          • DATE()
          • DATE_ADD()
          • DATE_FORMAT()
          • DATE_SUB()
          • DATEDIFF()
          • DAY()
          • DAYOFYEAR()
          • EXTRACT()
          • FROM_UNIXTIME
          • MONTH()
          • TIMEDIFF()
          • TIMESTAMP()
          • TO_DATE()
          • UNIX_TIMESTAMP
          • UTC_TIMESTAMP()
          • WEEKDAY()
          • YEAR()
        • Mathematical
          • ABS()
          • ACOS()
          • ATAN()
          • CEIL()
          • COS()
          • COT()
          • EXP()
          • FLOOR()
          • LN()
          • LOG()
          • PI()
          • POWER()
          • RAND()
          • ROUND()
          • SIN()
          • SINH()
          • TAN()
          • UUID()
        • String
          • BIN()
          • BIT_LENGTH()
          • CHAR_LENGTH()
          • CONCAT()
          • CONCAT_WS()
          • EMPTY()
          • ENDSWITH()
          • FIELD()
          • FIND_IN_SET()
          • FORMAT()
          • HEX()
          • INSTR()
          • LEFT()
          • LENGTH()
          • LPAD()
          • LTRIM()
          • OCT()
          • REVERSE()
          • RPAD()
          • RTRIM()
          • SPACE()
          • SPLIT_PART()
          • STARTSWITH()
          • SUBSTRING()
          • SUBSTRING_INDEX()
          • TRIM()
          • Regular Expressions
            • Regular Expressions Overview
            • NOT REGEXP
            • REGEXP_INSTR()
            • REGEXP_LIKE()
            • REGEXP_REPLACE()
            • REGEXP_SUBSTR()
        • Table
          • UNNEST()
        • Window Functions
          • Window Functions Overview
          • DENSE_RANK()
          • RANK()
          • ROW_NUMBER()
        • JSON Functions
        • Other Functions
          • SLEEP
    • System Paramaters
      • Boot Parameters for standalone installation
    • MatrixOne Catalog
    • Privilege Control Types
    • Limitations
      • JDBC supported features list
      • Partitioning supported features list
    • MatrixOne Directory Structure
  • Troubleshooting
    • Slow Queries
    • Common statistic data query
    • Database statistics
    • Audit
    • Error Code
  • FAQs
    • Product FAQs
    • Deployment FAQs
    • SQL FAQs
  • Release Notes
    • Release Timeline
    • v0.7.0
    • v0.6.0
    • v0.5.1
    • v0.5.0
    • v0.4.0
    • v0.3.0
    • v0.2.0
    • v0.1.0
  • Glossary
  • Contribution Guide
    • Make Your First Contribution
    • How to Contribute
      • Types of Contributions
      • Preparation
      • Report an Issue
      • Contribute Code
      • Review a Pull Request
      • Contribute Documentation
      • Make a Design
    • Code Style
      • Code of Conduct
      • Code Comment Style
      • Commit & Pull Request Style
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