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- Logical Operators 11831
- The following logical operators are available: AND , OR and NOT . SQL uses a three-valued logic system with true , false and NULL . Note that logical operators involving NULL do not always evaluate to NULL . For example, NULL AND false will
...true true true true false false true true NULL NULL true false false false false false NULL false NULL NULL NULL NULL NULL Unary Operator: NOT a NOT a true false false true NULL NULL The operators AND and OR are commutative, that is, you can switch th... - https://man.mtool.work/duckdb/2.0/sql/expressions/logical_operators.html
- SQL Quirks 8631
- Like all programming languages and libraries, DuckDB has its share of idiosyncrasies and inconsistencies. Some are vestiges of our feathered friend's evolution; others are inevitable because we strive to adhere to the SQL Standard and speci
...NT (8 bytes). Expressions Results That May Surprise You Expression Result Note -2^2 4.0 PostgreSQL compatibility means the unary minus has higher precedence than the exponentiation operator. Use additional parentheses, e.g., -(2^2) or the pow function... - https://man.mtool.work/duckdb/2.0/sql/dialect/sql_quirks.html
- Write User Defined Functions 7422
- Overview The JDBC driver can register user-defined functions (UDFs) written in Java, including scalar functions and table functions. This page covers building and registering both, from the simple functional-interface overloads to the vecto
...ake zero, one, or two boxed ( Object ) arguments. withIntFunction() , withLongFunction() , and withDoubleFunction() take a unary or binary operator over INTEGER , BIGINT , or DOUBLE and avoid boxing. import java.sql.Connection; import java.sql.DriverM...urnType(Class<?> | DuckDBColumnType | DuckDBLogicalType) withFunction(Supplier | Function | BiFunction) withIntFunction(IntUnaryOperator | IntBinaryOperator) withLongFunction(LongUnaryOperator | LongBinaryOperator) withDoubleFunction(DoubleUnaryOperat... - https://man.mtool.work/duckdb/2.0/clients/java/functions.html
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