Database Mail ships disabled; enabling it and wiring up an SMTP account, a profile, and a public principal grant are the steps that stand between a fresh SQL Server instance and sp_send_dbmail working reliably. The configuration script below executes all four setup calls inside msdb, fires a test message, and queries …

Storage budgets shrink faster than databases grow. Uncompressed tables and indexes often carry two to four times the physical page count that row or page compression would require — a gap that widens with every batch load or continuous INSERT. sys.dm_db_index_physical_stats joined to sys.partitions surfaces every …

A cross-database table inventory is one of the most common ad hoc requests in any SQL Server environment — and one of the few queries that cannot be answered by staying inside a single database context. sys.databases exposes every online database on the instance; three-part name references to sys.tables inside dynamic …

Every UPDATE and DELETE on a system-versioned table leaves behind a complete, queryable history of the previous row — automatically, with no triggers and no audit-table plumbing. SQL Server records the period each row version was valid and answers point-in-time questions through a single FOR SYSTEM_TIME clause. This is …

Documenting a database starts with a data dictionary: every table, every column, its data type, length, nullability, and default. SQL Server exposes this through the ANSI-standard INFORMATION_SCHEMA views, which produce a portable schema report that reads almost like English and runs unchanged on other ISO-compliant …

A query that ran in milliseconds last month now scans a million rows and spills to tempdb. Nothing changed in the code — but the data grew, and the statistics the optimizer relies on went stale, so its row estimates drifted far from reality and it chose a bad plan. Refreshing statistics is the fix, and knowing how and …

Which columns make up a table's primary key, and in what order are they declared? For a single table, the system stored procedure sp_pkeys answers in one line; for a database-wide inventory, the catalog views behind it give you full control. This post covers both, from the quick lookup to the complete metadata query. …

Plenty of SQL Server scripts still in circulation read rowcnt and dpages straight out of sysindexes — a habit inherited from SQL Server 2000, where that table was the canonical place to find row counts and page totals. The object survives only as the sys.sysindexes compatibility view, is flagged for removal, and …

The sys catalog views are the supported, forward-compatible way to read SQL Server metadata, and three of them — sys.objects, sys.tables, and sys.indexes — answer most day-to-day questions about what lives in a database. This script joins them into one inventory of every user table, its schema, its row count, and each …

Every SQL Server instance ships with a parallel command vocabulary that never appears in an ORM, a stored procedure, or an application query: the DBCC statements. They validate physical page structure, reclaim file space, evict cached plans, reseed identity columns, and report internal counters that no SELECT exposes — …