Get table name from create table sql

Question

Now I want to get table name from create table sql, such as

CREATE TABLE `engineers` (
  `id` int NOT NULL AUTO_INCREMENT,
  `username` varchar(255) COLLATE utf8mb4_general_ci NOT NULL,
  `password` varchar(255) COLLATE utf8mb4_general_ci DEFAULT NULL,
  `email` varchar(255) COLLATE utf8mb4_general_ci DEFAULT NULL,
  `birth` datetime,
  PRIMARY KEY (`id`),
  INDEX(`username`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci

or

CREATE TABLE IF NOT EXISTS .....

Answer 1

If you can query information_schema of your database server then you access your table name from the result of following query.

select  table_name,
        create_time AS `Time` 
from information_schema.tables 
where table_schema = @dbName
order by create_time desc 
limit 1

This should be run right after table creation is done

table_name      Time
table_20200815  15.08.2020 12:06:25

DEMO

Answer 2

This is in php, but should be easy to convert to ruby. Assuming the Create statement is in $sql...

[EDITED to allow for "(" to follow tablename, and fix parameter order in strpos()]

    $tablename = trim(substring($sql,strpos($sql,"TABLE IF NOT EXISTS") === 0 ? strpos($sql,"TABLE") + 5 : strpos($sql,"TABLE IF NOT EXISTS") + 20));
    $tablename = substring($tablename,0,strpos($tablename,strpos($tablename," ") < strpos($tablename,"(") ? " " : "("));

Then test for and strip backticks if there are any.