Prompt Title: NVARCHAR analogs in databases

nvarchar(max) is a datatype in Microsoft SQL Server that allows for storing Unicode character data of variable length, up to a maximum of 2^31-1 bytes.

In other databases, the equivalent datatype and syntax for storing variable-length Unicode character data would be:

• PostgreSQL: varchar(n) or text

  • varchar(n) allows you to specify a maximum length, where n is the number of characters you want to store. If you don't specify a length, it defaults to 1. text does not have a length restriction.
  • There is no direct equivalent for nvarchar(max) in PostgreSQL, but you can use text instead. text can store up to 1GB of data, which is significantly larger than the maximum size of nvarchar(max).

• SQLite: TEXT

  • TEXT allows you to store character data of any length. SQLite does not have a maximum length restriction for TEXT data.
  • There is no direct equivalent for nvarchar(max) in SQLite, but you can use TEXT instead.

• MySQL: VARCHAR(n) or LONGTEXT

  • VARCHAR(n) allows you to specify a maximum length, where n is the number of characters you want to store. If you don't specify a length, it defaults to 1. LONGTEXT does not have a length restriction.
  • There is no direct equivalent for nvarchar(max) in MySQL, but you can use LONGTEXT instead. LONGTEXT can store up to 4GB of data, which is significantly larger than the maximum size of nvarchar(max).

• Hive: STRING

  • STRING allows you to store character data of any length. Hive does not have a maximum length restriction for STRING data.
  • There is no direct equivalent for nvarchar(max) in Hive, but you can use STRING instead.

• ClickHouse: String or FixedString(n)

  • String allows you to store variable-length character data. FixedString(n) allows you to store a fixed-length string of n characters.
  • There is no direct equivalent for nvarchar(max) in ClickHouse, but you can use String instead. String can store up to 2^64-1 bytes of data, which is significantly larger than the maximum size of nvarchar(max).

• Greenplum: varchar(n) or text

  • varchar(n) allows you to specify a maximum length, where n is the number of characters you want to store. If you don't specify a length, it defaults to 1. text does not have a length restriction.
  • There is no direct equivalent for nvarchar(max) in Greenplum, but you can use text instead. text can store up to 1GB of data, which is significantly larger than the maximum size of nvarchar(max).

Restrictions for each of these data types are as follows:

• PostgreSQL: varchar(n) can store up to n characters, where n can be up to 10485760 (10^7). text does not have a length restriction.

• SQLite: TEXT can store up to 2^31-1 bytes of data.

• MySQL: VARCHAR(n) can store up to n characters, where n can be up to 65535. LONGTEXT can store up to 4GB of data.

• Hive: STRING can store up to 2^31-1 bytes of data.

• ClickHouse: `