Search Result: commutative - DuckDB 2.0 全文検索

Logical Operators 11228: 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 ... LL 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 the left and right operand without affecting the result. ...; https://man.mtool.work/duckdb/2.0/sql/expressions/logical_operators.html

Calculating a Database Checksum 7485: To calculate a database checksum, use a commutative operation such as bit_xor on all columns, all rows, and all tables. First, create a table macro that performs this for each table: CREATE OR REPLACE MACRO table_checksum(table_name) AS TAB ...; https://man.mtool.work/duckdb/2.0/guides/snippets/database_checksum.html

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