使用P/L SQL建表时，如果使用了关键字作为字段名，如：uid,type,date等，会提示出错无效的标识符(invalid identifier)。在一些情
使用P/L SQL建表时，如果使用了关键字作为字段名，，如：uid,type,date等，会提示出错无效的标识符(invalid identifier)。在一些情况不得不使用关键字作为字段名时，就像一些系统升级时，从其它数据库改为Oracle时，该什么办呢。经验证， 解决办法是使用双引号“”，如“type”,同样insert等语句也是一样操作
create table Test_Tab
(
id number,
“uid” number,
”type“ number
);
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MySQL Add User: Syntax, Options, and Security Best PracticesMay 13, 2025 am 12:12 AMToaddauserinMySQL,use:CREATEUSER'username'@'host'IDENTIFIEDBY'password';Here'showtodoitsecurely:1)Choosethehostcarefullytocontrolaccess.2)SetresourcelimitswithoptionslikeMAX_QUERIES_PER_HOUR.3)Usestrong,uniquepasswords.4)EnforceSSL/TLSconnectionswith
MySQL: How to avoid String Data Types common mistakes?May 13, 2025 am 12:09 AMToavoidcommonmistakeswithstringdatatypesinMySQL,understandstringtypenuances,choosetherighttype,andmanageencodingandcollationsettingseffectively.1)UseCHARforfixed-lengthstrings,VARCHARforvariable-length,andTEXT/BLOBforlargerdata.2)Setcorrectcharacters
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