Duplicate and overlapping indexes waste storage, slow down every write, and split optimizer statistics across redundant copies. This T-SQL script compares each non-heap index in the current database on its first sixteen key columns and surfaces any pair of indexes that overlap, giving the DBA a short list of cleanup …

Knowing how much space each table and each index consumes is the foundation of capacity planning, archive policy, and index cleanup decisions on any SQL Server instance. This T-SQL script reads the partition-level storage statistics out of sys.dm_db_partition_stats and reports the size of every index — clustered, …

Before renaming a column, retiring a view, or dropping a stored procedure, every DBA needs the answer to one question: what else depends on this object? This T-SQL script reads sys.sql_expression_dependencies and reports every referencing-and-referenced pair in the current database, with optional filtering to a single …

"Where is every datetime column?" — "Which tables still use text instead of varchar(max)?" — "Are any columns using a deprecated user-defined type?" These are recurring DBA questions during schema audits, deprecation sweeps, and pre-migration assessments. This T-SQL script joins sys.columns to sys.types, sys.tables, …

Every database with foreign keys eventually needs a single inventory: every constraint, its parent table and column, and the referenced table and column on the other side. This T-SQL script joins sys.foreign_keys to sys.foreign_key_columns, sys.tables, and sys.columns to produce the canonical foreign-key map of the …

Excessive virtual log files (VLFs) inside the transaction log slow down database recovery, backup, and restore operations — often by minutes on large logs — and the problem compounds silently every time autogrowth fires with a small increment. This script queries DBCC LOGINFO across every online database on the …

Running out of space inside a data or log file halts SQL Server transactions immediately — and discovering that a volume is full only after an outage is too late. This script queries sys.master_files and sys.dm_os_volume_stats across every online database on the instance to report each file's allocated size, space …

Every SQL Server installation ships with max server memory set to its default value of 2,147,483,647 MB — effectively unlimited — which allows the Buffer Pool to consume all available RAM and starve the operating system of the memory it needs for network stack, disk I/O, and other critical processes. This script reads …

A heap table — a table with no clustered index — stores rows in no particular order, forces full table scans for most non-indexed queries, and accumulates forwarded records every time an UPDATE causes a row to outgrow its page. This script queries sys.tables, sys.indexes, sys.partitions, sys.allocation_units, and …

A copy-only backup is a special SQL Server backup that is independent of the normal backup sequence. It does not reset the differential base or interrupt the transaction log backup chain, making it the correct choice when you need an ad-hoc backup for a development or test environment restore without affecting …