#mysql string function

MySQL TRIM() function returns a string after removing all prefixes or suffixes from the given string. Syntax TRIM([{BOTH | LEADING | TRAILING} [remstr] FROM ] str) Arguments Name Description BOTH Indicates that prefixes from both left and right are to be removed. LEADING Indicates that only leading prefixes are to be removed. TRAILING Indicates that only trailing prefixes are to be removed.…

MySQL has a RAND function that can be invoked to produce random numbers between 0 and 1: mysql> SELECT RAND( ), RAND( ), RAND( ); +——————+—————–+——————+ | 0.45464584925645 | 0.1824410643265 | 0.54826780459682 | +——————+—————–+——————+ 1 row in set (0.00 sec) When invoked with an integer argument, RAND( ) uses that value to seed the random number generator. Each time you seed the generator with a…

MySQL SUBSTRING() returns a specified number of characters from a particular position of a given string. Syntax: SUBSTRING(str, pos, len) or SUBSTRING(str FROM pos FOR len) Arguments Name       Description str              A string. pos             Starting position. len              Length in characters. Example : MySQL SUBSTRING() function SELECT SUBSTRING(‘satyaprakash’,4,3);   mysql> SELECT…