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            "categoryTitle": "Database",
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            "title": "Evaluate Boolean Expression",
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            "translatedTitle": "计算布尔表达式的值",
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                "Truncate table Variables",
                "insert into Variables (name, value) values ('x', '66')",
                "insert into Variables (name, value) values ('y', '77')",
                "Truncate table Expressions",
                "insert into Expressions (left_operand, operator, right_operand) values ('x', '>', 'y')",
                "insert into Expressions (left_operand, operator, right_operand) values ('x', '<', 'y')",
                "insert into Expressions (left_operand, operator, right_operand) values ('x', '=', 'y')",
                "insert into Expressions (left_operand, operator, right_operand) values ('y', '>', 'x')",
                "insert into Expressions (left_operand, operator, right_operand) values ('y', '<', 'x')",
                "insert into Expressions (left_operand, operator, right_operand) values ('x', '=', 'x')"
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