LEN function in MSSQL and it's equivalent in MySQL
MS Access: Len Function
Len() and Datalength() – Sqljunkieshare
SQL-SERVER: how to get the maximum length of a variable of VARCHAR help - Database Administrators Stack Exchange
Counting String Occurrences in SQL
How to Use MySQL String Functions {50 Examples}
MySQL CHAR_LENGTH() function - w3resource
Javarevisited: How to find Length of String in SQL Server? LEN() Function Example
PostgreSQL LENGTH() function - w3resource
The Length Limitations of LEN()? – SQLServerCentral
string - How to count instances of character in SQL Column - Stack Overflow
character - Getting the length of a string in SQL - Stack Overflow
sql - Is it faster to check if length = 0 than to compare it to an empty string? - Stack Overflow
SQL String Functions with Syntax and Examples - DataFlair
SQL Query to Find Shortest & Longest String From a Column of a Table - GeeksforGeeks
Learn MySQL: MySQL String Functions
SQL LENGTH function - Get the Number of Characters In a String
SQL LENGTH function - Get the Number of Characters In a String
SDU Tools: Calculate string length in SQL Server T-SQL - The Bit Bucket
mysql - How to crop a field Length in SQL so it does not consume all the space of a DBGrid? - Stack Overflow
SUBSTRING, PATINDEX and CHARINDEX string functions in SQL queries
SQL Query to Find Shortest & Longest String From a Column of a Table - GeeksforGeeks
SQL varchar data type deep dive
