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AI代码解释 db12=#COPYt_demoTOPROGRAM'gzip -c > /tmp/file.txt.gz';COPY1000db12=#COPYt_importFROMPROGRAM'gunzip -c /tmp/file.txt.gz'WHERExBETWEEN100AND103;COPY4db12=#SELECT*FROMt_importWHEREx>=100;x---100101102103(4rows) 某些场景下,不止想将数据导出。上面场景,我们想导出数据时将数据...
$> mysqldump db1 > dump.sql $> mysqladmin create db2 $> mysql db2 < dump.sql Do not use --databases on the mysqldump command line because that causes USE db1 to be included in the dump file, which overrides the effect of naming db2 on the mysql command line. PREV...
On Server 2: $>mysqladmincreate db1$>mysqldb1 < dump.sql You can specify a different database name in this case, so omitting--databasesfrom themysqldumpcommand enables you to dump data from one database and load it into another.
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400 InvalidDBName.Format Specified DB name is not valid. 无效的数据库名称。请重新命名,数据库名称由小写字母,数字、下划线组成,字母开头,字母或数字结尾,最长16个字符。 400 InvalidDBName.Forbid Specified DB name is a keyword in RDS. 设置数据库名失败,关键字不可用于参数命名,DBName是关键字,请修改参数...
开头还是介绍一下群,如果感兴趣polardb ,mongodb ,mysql ,postgresql ,redis 等有问题,有需求都可以加群群内有各大数据库行业大咖,CTO,可以解决你的问题 最近有人问,从ORACLE 迁移项目到POSTGRESQL 在之前的项目中有将表insert into select 的操作,对比之前的ORACLE 的操作到 PG 上,对于这个操作相对的操作的时间...
I'm new to MySql db , i want to know how can i do Upgrade from one DB version to another DB version ? i mean copy one db version ( schema + data ) to another db version ( a new version ) , copy the schema with all the data . 1) if i have old DB schema with data...
On a similarly configured system (except with a single monolithic IDB file with 100GB free space, internal SAS drives, same RAM, but less CPU horsepower), running MySQL 5.1.45 & Inodb plugin 1.0.6, the same ALTER TABLE runs in less than 3 hours. Is it related to the differences in ...