Web Reference: Feb 26, 2026 · PostgreSQL provides the standard SQL type boolean; see Table 8.19. The boolean type can have several states: “true”, “false”, and a third state, “unknown”, which is represented by the SQL null value. Jul 15, 2025 · In this article, we will explain the PostgreSQL BOOLEAN data type and its implementation in database table design, highlighting its usage through practical examples. Jul 16, 2025 · It contains several data types, including Boolean, Numeric, Character, Temporal, Array, JSON, UUID, and special data types. When generating a table, we specify the data type for each column, indicating the type of data we want to store in the table fields.
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