SQL Server: test queries without cache
DBCC DROPCLEANBUFFERS; SELECT * FROM TABLE_X …DBCC DROPCLEANBUFFERS; SELECT * FROM TABLE_X … More info
Category: SQL Server
update column with random string
DECLARE @v TABLE (x VARCHAR(50)) INSERT INTO @v VALUES — list of strings that column will be updated with (’37845840’),(’34879335’),(’33879336’),(’37855840’); DECLARE cursor1 CURSOR FOR SELECT <TABLE_ID> FROM <SOME_TABLE>; DECLARE @id INT; OPEN cursor1 FETCH NEXT FROM cursor1 INTO @id WHILE @@FETCH_STATUS=0 BEGIN UPDATE <SOME_TABLE> SET <UPDATED_COLUMN> = ( SELECT x FROM ( Read more about update column with random string[…]
SQLCMD.exe
# query in command line sqlcmd -d db_name -Q ‘select * from table_name’ -W # connnect by hostname and port number (1433) sqlcmd -S tcp:hostname,1433 -U username -P password # connnect by hostname and port number (1433) and use db (dbname) sqlcmd -S tcp:hostname,1433 -U username -P password -d dbname # input Read more about SQLCMD.exe[…]
Random 4-digit number
select substring(cast(abs(CAST(CHECKSUM(NEWID()) AS bigint)) as varchar),1,4);
SQL Server: Numer portu
Wykonanie poniższego zapytania powinno zwrócić numery portów, na których nasłuchuje SQL Server. USE master GO xp_readerrorlog 0, 1, N’Server is listening on’, ‘any’, NULL, NULL, N’asc’ GOUSE master GO xp_readerrorlog 0, 1, N’Server is listening on’, ‘any’, NULL, NULL, N’asc’ GO