What to choose when creating a database sorting rule in navicat

When creating a database in Navicat, it is critical to choose an appropriate collation to ensure correct storage and retrieval of data. Recommended collations include: Multilingual data and general text storage: utf8_unicode_ci Data containing large numbers of emojis or special characters: utf8mb4_unicode_ci Case-insensitive strings: utf8_general_ci

Collation selection when creating a database in Navicat

When creating a database in Navicat, specifying a collation is critical for storing and retrieving data. Collation rules determine how data is sorted and processed character by character.

Collation Options

Navicat provides the following collation options:

• Unicode (utf8_unicode_ci): Recommended Used to store and process multilingual data, following the Unicode character standard.
• Unicode (utf8mb4_unicode_ci): Similar to utf8_unicode_ci, but supports a larger range of characters, including emojis.
• Binary (binary): Binary sorting, sorting characters by byte value.
• Case Insensitive (utf8_general_ci): Case insensitive, sorted by Unicode code point of characters.
• Case Sensitive (utf8_bin): Case sensitive, sorted by the byte value of characters.

How to choose a collation

When choosing a collation, consider the following factors:

• Data types: The type of data to store (e.g. text, number, date).
• Language requirements: Whether multi-language data needs to be processed.
• Case sensitivity: Whether it is necessary to distinguish between upper and lower case in the string.

Recommended collation

For most cases, the following collation is recommended for creating databases in Navicat:

• utf8_unicode_ci: For multilingual data and general text storage.
• utf8mb4_unicode_ci: For data containing a large number of emojis or other special characters.
• utf8_general_ci: For case-insensitive strings.

Other Notes

• Be sure to back up your data before changing the collation of an existing database.
• Different collations may affect query performance and results.
• Choosing an appropriate collation is critical to ensuring correct storage and retrieval of data.

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