This tutorial will show you how to truncate a MySQL table using PHP. In the example below, we will use the PDO object to execute a TRUNCATE statement and empty table. //Our SQL statement. This will query empty / truncate //a table called "videos" $sql = "TRUNCATE TABLE `videos`"; ...
The following example shows how to use perror to find the meanings for the most common error numbers that indicate a problem with a table: $> perror 126 127 132 134 135 136 141 144 145 MySQL error code 126 = Index file is crashed MySQL error code 127 = Record-file is crashed MySQL ...
The last months I'm evaluating MySQL 4.1 and find this strange behavior "(...)Inserting a string into a string column (CHAR, VARCHAR, TEXT, or BLOB) that exceeds the column's maximum length. The value is truncated to the column's maximum length.(...)" ...
If this is a problem, you can reset theAUTO_INCREMENTvalue using theALTER TABLEcommand. TRUNCATE TABLE t1; ALTER TABLE t1 AUTO_INCREMENT = 4; INSERT INTO t1 (description) VALUES ('FOUR'); SELECT * FROM t1; mysql> SELECT * FROM t1; +---+---+ | id | description | +---+---+...
建议使用本地文件形式的 H2 数据库,可不依赖外部的其他数据库,使用更简单;且经过简单测试,H2 比 MySQL 数据库的读写速度更快 所使用的数据库用户需要有 DML 读写权限,及 DDL 权限(需要执行 CREATE TABLE、TRUNCATE TABLE 操作)。 需要使用 JDK8 及以上版本 若需要通过源码启动,需要安装 Gradle 2. 通过源码执...
2. Add SQL Statements to PHP Functions By using MySQL extensions in PHP scripts, you can add the following SQL statements in PHP CRUD functions to work with MySQL database records: INSERT UPDATE DELETE To specify which records will be involved, you can use WHERE clauses. Typically, the valu...
Automated Conversion from T-SQL to ANSI SQL? Automatic Truncate Long Strings while inserting data. Automatically import the CSV files from a Folder Automatically UpperCase ALL MS SQL Server Keywords AutoNumber in T-SQL Select Statement AVG ->Operand data type varchar is invalid for avg opera...
MySQL has a mutex for slow log writes. Truncation can block MySQL because the OS serializes access to the inode during the truncate operation. This problem is particularly evident when using the ext3 file system (instead of xfs). Use FLUSH LOGS instead of sending SIGHUP When copytruncate is...
How to use dtexec command to set variable and variable expressions, below is my dtexec command throwing error?!!? How to use parameter or variable in the Derived Column expression to get the value from the column name? How to use parameter or variable to specify table name or query in SSI...
I'm using MySql 5.5 on Mac 10.7.5. From the shell (I'm using bash), I'd like to be able to run a command o truncate data in all tables. Also, I'd like to enter a single command that won't prompt me for a password. I've tried this, but its evidently not the right comman...