MariaDB [data_name]> create table copy1_table_name like table_name; #复制表结构table_name创建copy1_table_name 表(这种方法不复制此表的内部数据) Query OK, 0 rows affected (0.06 sec) 二 备份表的好助手 MariaDB [data_name]> create table copy2_table_name as select * from table_name; #...
CREATE VIEW v (mycol) AS SELECT 'abc'; CREATE TABLE v2 LIKE v; ERROR 1347 (HY000): 'test.v' is not of type 'BASE TABLE' The same version of the table storage format as found in the original table is used for the new table. CREATE TABLE ... LIKE performs the same checks as ...
grant all privileges on *.* to 'root'@'%' identified by '密码' with grant option; 授权允许 root用户在任意的主机上远程连接数据库, with grant option 还可以可以将select ,update权限传递给其他用户 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 之后user 表就会有变化 mysql schema 下有个 user...
select*frominformation_schema.processlist;select*frominformation_schema.processlistorderbyTIMEdesc;showstatuslike'%memory_used%';selectversion();showbinarylogsshowfullprocesslist;SELECTCASEWHENMax_Stage<2THENProgressELSE(Stage-1)/Max_Stage*100+Progress/Max_StageENDASProgressFROMINFORMATION_SCHEMA.PROCESSLIST; ...
DROP TABLE IF EXISTS audit; CREATE TABLE audit AS SELECT * FROM emp WHERE 1=0; ALTER TABLE audit ADD id INT AUTO_INCREMENT PRIMARY KEY FIRST; ALTER TABLE audit ADD note CHAR(50) AFTER id; 2.insert触发器 insert触发器的作用是:当向表中插入数据的时候,将会激活触发器。有两类:before和after...
摘要:create table temp1 ( aid VARCHAR(5) not null, car VARCHAR(10) not null ); create table temp2 ( bid VARCHAR(5) not null, username VARCHAR(10) not null 阅读全文 posted @ 2023-01-22 21:15 zhjh256 阅读(139) 评论(0) 推荐(0) 编辑 lightdb...
/* Example: *//* --- *//* CREATE VIRTUAL TABLE BookSearch USING fts5(ID, Title, Desc); *//* INSERT INTO BookSearch SELECT ID, Title, Desc FROM Book; *//* --- *//* Searches are done like this: *//* ---
However, when I use the same query for a "create table ... select" or "insert into ... select" then the statements never finish (at least not in the last 3 hours). No errors are reported in the log files that I can see. Any ideas? Answer Answered by Roman Nozdrin in this ...
(0.00 sec)mysql> select k from sbtest1 where id=1;+---+| k |+---+| 9974 |+---+1 row in set (0.01 sec)mysql>//然后根据报错,查看mysql.proc这张损坏的表mysql> use mysqlDatabase changedmysql> select * from proc limit 1\G*** 1. row *** db: test name: AddGeometryColumn type...
example: constmariadb=require('mariadb');constpool=mariadb.createPool({host:process.env.DB_HOST,user:process.env.DB_USER,connectionLimit:5});asyncfunctionasyncFunction(){letconn;try{conn=awaitpool.getConnection();constrows=awaitconn.query("SELECT 1 as val");// rows: [ {val: 1}, meta: ...