mysql>show tables;+---+|Tables_in_mysql|+---+|columns_priv||db||engine_cost||event||func||general_log||gtid_executed||help_category||help_keyword||help_relation||help_topic||innodb_index_stats||innodb_table_stats||ndb_binlog_index||plugin||proc||procs_priv||proxies_priv||server_co...
SHOW DATABASES [like_or_where] SHOW ENGINE engine_name {STATUS | MUTEX} SHOW [STORAGE] ENGINES SHOW ERRORS [LIMIT [offset,] row_count] SHOW EVENTS SHOW FUNCTION CODE func_name SHOW FUNCTION STATUS [like_or_where] SHOW GRANTS FOR user SHOW INDEX FROM tbl_name [FROM db_name] SHOW MASTER...
The SQL language consists of commands that you use to create and manipulate database objects, run queries, load tables, and modify the data in tables. Amazon Redshift is based on PostgreSQL. Amazon Redshift and PostgreSQL have a number of important differences that you must be aware of as ...
1. show tables [from db_name]; — 显示当前数据库中所有表的名称。 2. show databases; — 显示mysql中所有数据库的名称。 3. show columns from table_name from database_name; 或show columns from database_name.table_name; — 显示表中列名称。 4. show grants for user_name; — 显示一个用户...
LOCATION 是指定外部表的存储路径,MANAGEDLOCATION 是指定管理表的存储路径(hive 4.0.0 才支持),官方建议默认就行,让所有的表都在一个根目录下。 例子 代码语言:javascript 代码运行次数:0 运行 AI代码解释 create database myhive;create databaseifnot exists myhive; ...
Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 4 Server version: 5.5.64-MariaDB MariaDB Server Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input st...
show tables;show databases;show partitions;show functions;describe extended table_name dot col_name; DDL(Data Defination Language):数据库定义语言 建表: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 CREATE[EXTERNAL]TABLE[IFNOTEXISTS]table_name[(col_name data_type[COMMENTcol_comment],...)][...
Welcome to the MySQL monitor. Commands end with;or\g. Windows 客户端连接 1.下载一个标准的 SQL 客户端,例如 MySQL Workbench 、SQLyog 等,本文以 SQLyog 为例。 2.打开 SQLyog,选择文件>新连接,输入对应的主机地址、端口、用户名和密码,单击连接。
characters] [-y variable length type display width] [-Y fixed length type display width] [-p[1] print statistics[colon format]] [-R use client regional setting] [-b On error batch abort] [-v var = "value"...] [-X[1] disable commands[and exit with warning]] [-? show syntax ...
However, to be compliant with the ANSI standard, they all support at least the major commands (such asSELECT,UPDATE,DELETE,INSERT,WHERE) in a similar manner. Note:Most of the SQL database programs also have their own proprietary extensions in addition to the SQL standard!