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While implementing solution to a multi tenant using postgres I needed an answer on how much the maximum schemas can reside in one postgres database.
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PostgreSQL supports having multiple schemas in a single database there by letting you namespace different features into different schemas. For example, you can have a database named postgres and have multiple schemas based on your application like ecommerce , auth etc.
So, the maximum numbers of schemas in a database is limited to the maximum number of integer data type (2^31-1 is the max of int).
In the Oracle database system, the term database schema, which is also known as "SQL schema," has a different meaning. Here, a database can have multiple schemas (or “schemata,” if you're feeling fancy). Each one contains all the objects created by a specific database user.
PostgreSQL has a CREATE SCHEMA statement that is used to create a new schema in a database. Syntax: CREATE SCHEMA [IF NOT EXISTS] schema_name; Let's analyze the above syntax: First, specify the name of the schema after the CREATE SCHEMA keywords.
We tested thousands schemas - with thousands tables without problem. There are a few known issues
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