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Where are some useful SQL puzzles to teach SQL in a workplace?

Working of indexes in PostgreSQL

Error Code 1117 Too many columns; MySQL column-limit on table

Is it possible to use SQLite as a client-server database? [closed]

I Need to Shrink My Database - I just freed a lot of space

Why is the speed of executing statements dependent on the network connection?

Can spatial index help a “range - order by - limit” query

Why are queries parsed in such a way that disallows the use of column aliases in most clauses?

Streaming replication and failover on PostgreSQL

Best way to design tournament database

Difference between database dump (export) and database backup?

SQL to read XML from file into PostgreSQL database

Placing Transaction Log on Separate Volume [solid state]?

Where to start with Oracle?

How database size affects performance: Theory vs reality

Can I rely on functions being executed first in SQL

Sort by match of LIKE

Gathering Read Routing information using SMO is inaccurate in SQL Server 2016

Can I get the union of the a Postgres fulltext index?

How to configure replication from PostgreSQL (RDS) to vanilla PostgreSQL?

Scaling Percona datacenters: setup and replication

Optimizing a compare query

How can I achieve clustering of rows without the exclusive lock and logging overhead of the `cluster` command?

Oracle Enterprise Manager 11g dbconsole “Internet Explorer cannot display the webpage”

What are sensible/rational character limits in a database e.g. for a persons name

Dynamic access to record column in plpgsql function

Getting the value of 'foo' for the closest previous row with higher 'bar'

Design for file based with many events

What should I consider when deciding between passing a comma-delimited string to a stored procedure instead of calling it individually per record?

Oracle build_plan_xml visualizer