MySQL TRUNCATE() returns a number after truncated to certain decimal places. The number and the number of decimal places are specified as arguments of the TRUNCATE function. TRUNCATE is a fast and efficient way to remove all rows from a table compared to using DELETE with no WHERE clause. TR...
MySQL in a Nutshell by Russell J. T. Dyer Name TRUNCATE( ) Synopsis TRUNCATE(number, number) This function returns a number given in the first argument with the digits beyond the number of decimal places specified in the second argument, truncated. It does not round the number—use the ...
Bug #50016RFE: --truncate-table in mysqldump Submitted:31 Dec 2009 20:54Modified:9 Dec 2010 19:01 Reporter:Kevin BentonEmail Updates: Status:VerifiedImpact on me: None Category:MySQL Server: mysqldump Command-line ClientSeverity:S4 (Feature request) ...
Truncating anInnoDBtable that resides in a file-per-table tablespace drops the existing tablespace and creates a new one. If the tablespace was created with an earlier version and resides in an unknown directory,InnoDBcreates the new tablespace in the default location and writes the following warn...
create or replace function sys.truncate(numeric,int4) returns numeric as declare value numeric; result numeric; begin value := length(substring(cast($1 as varchar), position('.' in cast($1 as varchar))+ 1)); if value < $2 then return $1; else return (select trunc($1,$2)); end...
On a system with a largeInnoDBbuffer pool andinnodb_adaptive_hash_indexenabled,TRUNCATE TABLEoperations may cause a temporary drop in system performance due to an LRU scan that occurs when removing anInnoDBtable's adaptive hash index entries. The problem was addressed forDROP TABLEin MySQL 5.5.23...
(), and add explicitly a new enum entry in enum legacy_db_type in handler.h " The problem is that line should not be there. To reproduce the bug, either not set db_type at all in a storage engine initialization function, or set it to DB_TYPE_UNKNOWN, like in: storage/maria/ha_...
一、为什么要使用truncate 使用truncate截断表速度快,不仅可以清空表数据,而且可以使自增列重新从1开始 二、出现错误的原因 Mysql中如果表和表之间建立了外键约束,则无法删除表及修改表结构 三、解决方案 在Mysql中取消外键约束: SET FOREIGN_KEY_CHECKS=0 ...
您可以编写自定义函数并在MaxCompute SQL中使用入口对象的delete_function()方法来删除函数。DROP FUNCTION:在MaxCompute项目中注销已注册的自定义函数。LIST FUNCTIONS:查看MaxCompute项目中所有自定义函数的信息。UPDATE FUNCTION:... Dynamic Table支持范围和限制 全量刷新 如果Dynamic Table设置的是全量刷新模式,支持的...
expression: fix thetruncatefunction when the first arg is 0 and second value is too large#58191 Merged 13 tasks ti-chi-botbotaddedaffects-7.5This bug affects the 7.5.x(LTS) versions.affects-8.5This bug affects the 8.5.x(LTS) versions.affects-6.5This bug affects the 6.5.x(LTS) versions....