Nested SQL

This article is about tables as column data. For nested queries, see Correlated subquery.

In relational databases, a nested table is a table that is embedded within another table.

Individual elements can be inserted, updated, and deleted in a nested table. Since individual elements can be modified in a nested table, they are more flexible than an array because elements in an array can only be modified as a whole, not individually.

A nested table doesn't have a maximum size, and an arbitrary number of elements can be stored in it.

  • "Nested Tables (Analysis Services - Data Mining)". Microsoft. May 7, 2018.
  • "PL/SQL Collections and Records: Nested Tables". Oracle Database Online Documentation Library, 12c Release 1 (12.1.0.2). 2017.
  • "Oracle Collections: A Definition in Plain English Part 2". Archived from the original on July 1, 2006.
  • "Oracle Database 10g: SQL (Oracle Press)". Archived from the original on September 8, 2005.

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