$ whois t-sql

T-SQL

first released in 1987 · by Sybase, Microsoft

$ guessprog --inspect t-sql

year: 1987
paradigm: procedural
family: other
memory: automatic gc
binding: static
safety: weak

T-SQL(7)

AUTHORS: Sybase, Microsoft
HISTORY: Transact-SQL was created by Sybase for its SQL Server database, released in 1987, adding variables, control flow, error handling and stored procedures to SQL. Microsoft partnered with Sybase to bring SQL Server to OS/2 and later Windows NT, and after the two companies went separate ways in the 1990s each kept developing its own dialect. It freely converts values between types, following a fixed type precedence.
USAGE: The language of Microsoft SQL Server and Azure SQL, extremely common in enterprise applications, reporting and data warehousing. Sybase's dialect lives on in SAP ASE.
SEE ALSO: T-SQL on Wikipedia ↗

$ cat squares.sql

DECLARE @total INT = 0, @i INT = 1;

WHILE @i <= 10
BEGIN
    SET @total += @i * @i;
    SET @i += 1;
END;

SELECT 'Sum of squares: ' + CAST(@total AS VARCHAR(10)) AS result;

-- implicit conversion: the string becomes an integer
SELECT '1' + 1 AS two;