What is the purpose of the sql.NullString type in the database/sql package?
- Encode String Values
- Manage SQL Connections
- Represent Nullable String
- Store SQL Query Results
The purpose of the sql.NullString type in the database/sql package is to represent nullable string values retrieved from a SQL database. It consists of two fields: String and Valid. The String field holds the actual string value, while the Valid field indicates whether the string is valid or null. This type is useful when dealing with database columns that may contain NULL values, providing a way to differentiate between actual string values and null values.
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