using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"([\s\S]+)\s*primary\s+key\s*\(\s*`([a-z]\w*)`\s*\)\s*(,\s*unique\s+key\s+uniq_\w+\s*\(`([a-z]\w*)`\))?(,\s*key\s+idx_\w+\s*\((\s*,?\s*`([a-z]\w*)`\s*)+\)\s*)+";
string substitution = @"\2";
string input = @"`id` INT (11) UNSIGNED NOT NULL AUTO_INCREMENT COMMENT 'primary',
`stu_name` VARCHAR (10) NOT NULL DEFAULT '' COMMENT 'username',
`stu_class` VARCHAR (10) NOT NULL DEFAULT '' COMMENT 'class',
`stu_num` INT (11) NOT NULL DEFAULT '0' COMMENT 'study number',
`stu_score` SMALLINT UNSIGNED NOT NULL DEFAULT '0' COMMENT 'total',
`tuition` DECIMAL (5, 2) NOT NULL DEFAULT '0' COMMENT 'fee',
`phone_number` VARCHAR (20) NOT NULL DEFAULT '0' COMMENT 'mobile',
`create_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'record created time',
`update_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'record updated time',
`status` TINYINT NOT NULL DEFAULT '1' COMMENT 'some comment',
PRIMARY KEY (`id`),
UNIQUE KEY uniq_stu_num (`stu_num`),
KEY idx_stu_score (`stu_score`),
KEY idx_update_time_tuition (`update_time`, `tuition`)";
RegexOptions options = RegexOptions.IgnoreCase;
Regex regex = new Regex(pattern, options);
string result = regex.Replace(input, substitution);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx