convert oracle to mysql

The following is a simple example of how to back up and restore each Database. For more details about the parameters and configurations, see related information. 1. mysql: parameter description: $ user $ password $ targethost $ port $ charset $ dbname $ table $ filename username and password ip address (this document only provides the simplest usage of backing up and recovering databases, for more detailed parameters and configurations, refer to the r

Condition 1 order by condition 2) c) where numrow> 80 and numrow 5. process long strings ORACLE processing of long strings also has some special features. The maximum length of a string that can be operated during INSERT and UPDATE is less than or equal to 4000 single bytes. If you want to INSERT a longer string, use the CLOB type for the field to use the DBMS_LOB package that comes with ORACLE. Before in

beyond the length is exceeded, a warning should be given, and the last operation is returned. 5. Processing date fields Mysql date fields are divided into DATE and TIME. The oracle date field is only DATE, which contains information about the year, month, day, hour, minute, and second. the system TIME of the current database is SYSDATE, accurate to seconds ,, or use a string to

Simulate the showindexfromtable command of MySQL in Oracle Simulate the show index from table command of MySQL in Oracle Experiment data initialization: Create table t as select * from hr. employees ; Create index inx_t1 on t (employee_id, first_name desc, last_name ); Create index inx_t2 on t (job_id, hir

MySQL implements the ranking syntax such as Oracle or PostgreSQL row_numberover bitsCN. comPostgreSQL and Oracle both provide statements such as row_number () over () to rank corresponding fields, which is very convenient. MySQL does not provide such a syntax. Table "ytt. t1" Column | Type | Modifiers -------- + ------

Oracle (large website database platform) the corresponding varchar and numeric are available. Of course, the time type of MySQL (the best combination with PHP) is not available in Oracle (large website database platform. The solution is to replace. 4. Differences Between Automatic growth types. Oracle (a large-scale w

year, month, day, hour, minute, and second. the system TIME of the current database is SYSDATE, accurate to seconds, or convert the string into a date-type function. TO_DATE(‘2001-08-01’,’YYYY-MM-DD’) Year-month-day 24 hours: minute: Second format YYYY-MM-DD HH24: MI: SS TO_DATE () There are many date formats, see oracle doc.

apache installed in the/www directory tomcat installed in the/usr/local/jakarta-tomcat Directory install jdk on/usr/ Local/jdk122 Directory, data preparation 1paiapache_1312.tar.gz 21_php-404.tar.gz small 4, sybase11.9.2 package: sybase-common-1192-1i386.rpm sybase-ase-1192-1i386.rpm sybase-monserver-1192-1i386.rpm sybase-openclient-1111-1i386.rpm sybase-sqlremote-602-1i386.rpm 5、oracle8.1.6.tar 6, mysql3.22.27 package: sybase-chinese-1192-1i386.rpm mysql