MySQL allows a nonstandard syntax: FLOAT (M,D) or REAL (M,D) or DOUBLE PRECISION (M,D). Floating-point values are subject to platform or implementation dependencies. ), date and time (DATETIME, DATE, etc. Mysql sql'',mysql,sql,database,insert,Mysql,Sql,Database,Insert,Java"XX" CREATE TABLE `dbcs`.`born in` (`person` VARCHAR(100) ,`year` INT ,`prob` FLOAT); . . Why do some airports shuffle connecting passengers through security again. represents the maximum number of entities that can be involved in a particular relationship. Should I use the datetime or timestamp data type in MySQL? In this case, the 10-digit value of 999.9999999, rounded up to 1000.0000000. https://dev.mysql.com/doc/refman/8.0/en/floating-point-types.html says: MySQL permits a nonstandard syntax: FLOAT(M,D) or REAL(M,D) or DOUBLE PRECISION(M,D). Column_1, column_2, column_N - This should specify the names of columns you want in your table. contained only one rowthe last one shown above. 2.display names of employee. PHP originally stood for Personal Home Page, but it now stands for the recursive initialism PHP: Hypertext Preprocessor. than DOUBLE, the result of the Try to create a table with SQLAlchemy in MySQL-DB, This code works fine and does what is expected. For example, different CPUs may Let us understand the MySQL CREATE TABLE syntax better. Share MySQL has floating point types for approximate values: FLOAT and DOUBLE and fixed-point types for exact values: DECIMAL and NUMERIC. MySQL uses four bytes to store a FLOAT value. numbers should be regarded the same if they are same within a Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. ENGINE CHARSET mysql> MySQL SQL CREATE TABLE runoob_tbl : Binary relationship Ans- A (.) Thank you for the detailed explanation. MySQL,,, .NOT NULL() mysql 1)sql CREATE TABLE t_user(user_id INT(10) NOT NULL);spa 2)ALTER orm ALTER TABLE t_user MODIFY user_id INT(10) NOT NULL;ip ALTER T problems. version or optimization level. implementation dependencies. calculations that are done using floating-point operations are Syntax In its simplest form, the syntax for the CREATE TABLE statement in MySQL is: CREATE TABLE table_name ( column1 datatype [ NULL | NOT NULL ], column2 datatype [ NULL | NOT NULL ], . We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. CREATE TABLE DemoTable ( MyFloat FLOAT(24), MyReal REAL ); GO INSERT INTO DemoTable VALUES (1899.982, 1899.982); GO SELECT * FROM DemoTable; GO DROP TABLE DemoTable; GO Result: 1 record You may also like # Our Sql REAL Data Type Reference Japanese, 5.6 Follow that with the name of the referenced table and the name of the referenced column in parentheses. Asking for help, clarification, or responding to other answers. MySQL only uses this value to determine whether to use FLOAT or DOUBLE for the resulting data type. Yes. 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How do you set a default value for a MySQL Datetime column? Did neanderthals need vitamin C from the diet? The following query is used to create the new table Employee. Thanks. An implication of the preceding issues is that if you attempt https://twitter.com/billkarwin/status/347561901460447232. Enterprise Architect 16.1Pro Cloud Server 5.1, Login with username, password and session length. Install MySQL Database Server Connect to MySQL Server Download MySQL Sample Database Load Sample Database MySQL Data Manipulation SELECT ORDER BY WHERE SELECT DISTINCT AND OR IN BETWEEN LIKE LIMIT IS NULL Table & Column Aliases Joins INNER JOIN LEFT JOIN RIGHT JOIN Self Join CROSS JOIN GROUP BY HAVING ROLLUP Subquery Derived Tables EXISTS UNION Attribute Ans- An (.) When you give a value that won't fit in the number of digits, it caps the value and uses the greatest value that can fit. create table worker( int(11) not null, int(11) not null, date not null, float(8,2) not null, varchar(10) not null default'', varchar(20) not null, date not null, primary key())engine=innodb default charset=utf8 row_format=dynamic; 2. . a and b do not appear to To create a table in MySQL workbench, Within the SCHEMAS, Expand the Database folder on which you want to use. The FLOAT type is for single-precision (4 bytes), while DOUBLE is for double-precision (8 bytes). SQL CREATE TABLE statement is used to create table in a database. To set the first auto-increment value for engines that do not support the AUTO_INCREMENT table option, insert a "dummy" row with a value one less than the desired value after creating the table, and then delete the dummy row. When trying to use DataGrip with MySQL Connector/J too i can see that data is approximated in MySQL. Maybe it's simpler. Or you could use FLOAT with no arguments, and it will not constrain the number of digits at all. floating-point value as written in an SQL statement may not be An SQL developer must decide what type of data that will be stored inside each column when creating a table. Which MySQL data type to use for storing boolean values. use name // name . WGU C170 Terms With Complete Solution Associative Entity Ans- All relationships for the (.) This is working exactly as intended by the FLOAT(10,7). treat floating-point values as exact in comparisons may lead E.g. The following illustrates the basic syntax of the CREATE TABLE statement: CREATE TABLE [ IF NOT EXISTS] table_name ( column_1_definition, column_2_definition, ., table_constraints ) ENGINE =storage_engine; Code language: SQL (Structured Query Language) (sql) ); However, the full syntax for the MySQL CREATE TABLE statement is: 2021 Copyrights. Now i try to add a table with a float columnBut this is not working - i get an error - how can i define a float in the table? columns might differ between the two hosts. show databases; // create database [if not exists] name charset utf8; // UTF-8 . columns, MySQL performs operations with a precision of 65 Are defenders behind an arrow slit attackable? On others, it returns 0 and -0 . It was originally created by Danish-Canadian programmer Rasmus Lerdorf in 1993 and released in 1995. AUTO_INCREMENT Column Option. In other words, you gave it the constraint to max out at 1000.0000000, because you told it to max out at 10 digits, of which 7 digits are to the right of the decimal point. Would like to stay longer than 90 days. We will create a database to learn on called "playground". You need to edit the script used to create the DDL commands. Please select the CreateTable option. SELECT query would have 4.2 MySQL - ## Trips IdClient_Id Driver_Id Users Users_Id Status ('completed', 'cancelled_by_driver', 'cancelled_by_client') MySQL Create Table Exercises: Write a SQL statement to create a table employees including columns employee_id, first_name, last_name, job_id, salary and make sure that, the employee_id column does not contain any duplicate value at the time of insertion, and the foreign key column job_id, referenced by the column job_id of jobs table, can contain only those values which are exists in the jobs . For DECIMAL Here, (M,D) means than values can be stored with up to M digits in total, of which D digits may be after the decimal point. I think your intention is to have EA generate only FLOAT, rather than FLOAT(0). yyyy-mm-dd hh:mm:ss yyyy=mm-dd hh:mm:ss. mysql php _mysql mysql php mysqlCREATETABLE`TEST_TB_GRADE`(`ID`int(10)NOTNULLAUTO_INCREMENT,`. decimal digits, which should solve most common inaccuracy Really helpful, I updated the field to float(15, 7) now when I insert 1196.104 in the field it stores as 1196.1040039 how did it get the last 0039 part after 1196.104? to problems. ); Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)? MySQL uses four bytes for single-precision values and eight bytes for double-precision values. It can be whatever you prefer. varchar, integer, date, etc. MySQL error code: 1175 during UPDATE in MySQL Workbench. Right-click on the folder and open the context menu. SQLAlchemy / Create Table with float in MySQL? To learn more, see our tips on writing great answers. The column must be a key, and there can only be one AUTO_INCREMENT column in a table. CREATE TABLE is the SQL keyword. It's an inexact numeric type, and it will have rounding errors. Difference between decimal, float and double in .NET? Although the first five records look ; Data_type - Columns can have different data types namely - INT, TEXT, VARCHAR, DATE, DATETIME, TIMESTAMP, FLOAT, YEAR . Our website specializes in programming languages. This function takes two parameters and returns TRUE on success or FALSE on failure. The datatype parameter specifies the type of data the column can hold (e.g. There are some situations where float makes sense, but 99% of the time what they should have used was decimal. 3.display name of employee having highest salary. Vault's Most Prestigious Internships represent the employers whose internships were rated highest in prestige. There are some caveats about FLOAT. mysql> CREATE TABLE Images(Id INT PRIMARY KEY, Img LONGBLOB); . How can I do 'insert if not exists' in MySQL? I'm creating a MySQL diagram with a table with some column of type FLOAT and double precision, like the one attached to the end of this post. Why do quantum objects slow down when volume increases? DOUBLE data types are subject 1.add 5 records into the table. Read https://dev.mysql.com/doc/refman/8.0/en/problems-with-float.html and https://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html, Also see my old tweet about this: Create an empty table, use a WHERE clause that is always false 22. Is this possible in SQL , in PL/SQL we have execute immediate, but not sure in SQL. precision of one in ten thousand (0.0001), the comparison How to make voltage plus/minus signs bolder? A table has its own unique name and consists of rows and columns. Some time we may need to break a large string into smaller strings. auto . this Manual, How to Determine What Is Causing a Problem, Password Fails When Entered Interactively, Communication Errors and Aborted Connections, How to Protect or Change the MySQL Unix Socket File, Rollback Failure for Nontransactional Tables, 8.0 Suppose that you execute the Is it cheating if the proctor gives a student the answer key by mistake and the student doesn't report it? The result is correct. :MySQL INT FLOAT ? Making statements based on opinion; back them up with references or personal experience. -0. MySQL is a Relational Database Management System (RDBMS) whereas the structured Query Language (SQL) is the language used for handling the RDBMS using commands i.e Creating, Inserting, Updating and Deleting the data from the databases. Examples of frauds discovered because someone tried to mimic a random sequence, Books that explain fundamental chess concepts. The command to create the above table on MySQL prompt is as follows mysql> create table employee ( id int (6), name char (30), dept char (30), salary float (7,2)); Query OK, 0 rows affected (0.02 sec) Python Program to Create Table This is a suggestive python program to create an employee Table You generally create indexes to make queries perform faster. If you create a nonfiltered index on one of those columns, your index will have one column along with the clustered key if one exists. In our example, we create the table student using a CREATE TABLE clause. like they should not satisfy the comparison (the values of The FLOAT is a single precision floating point number. inttextdatetimeNOT NULLINDEX CREATE TABLE ( ) CREATE TABLE CREATE TABLE DB. ( 1 , 2 , . ). Syntax: CREATE TABLE table_name (column_name column_type); Create Table using PHP and MySQL Here, first we will create database connection, and then we will run mysql query to create table on connection object. Try to create a table with SQLAlchemy in MySQL-DB meta = MetaData () # Tabelle anlegen in MySQL DB students = Table ( 'students', meta, Column ('id', Integer, primary_key = True), Column ('name', String (45)), Column ('lastname', String (45)), ) meta.create_all (engine) Below is an example of timestamp with the time zone in PostgreSQL. You should be able to fix this by using chain.from_iterable (izip (.)) The world's most popular open source database, Download to these issues. 1) Creating Table using MySQL Command Line Client First, launch the MySQL Command Line Client tool and log in with a user who has the CREATE TABLE privileges on the database where you want to create the table. tolerance value: Conversely, to get rows where the numbers are the same, the float is used to store approximate values, not exact values. Log into MySQL or MariaDB using the following command: mysql -u root -p Type in the password you set up during installation to continue. It has a precision from 1 to 53 digits. Central limit theorem replacing radical n with n, Disconnect vertical tab connector from PCB. https://dev.mysql.com/doc/refman/8.0/en/floating-point-types.html, https://dev.mysql.com/doc/refman/8.0/en/problems-with-float.html, https://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html, https://twitter.com/billkarwin/status/347561901460447232. Next, the new_table_name will be the name of your freshly created table. FLOAT and You should always have it at the beginning of your SQL statement. create database "Santkrupa".create table"employee" in it employee table consist of emp-id ,emp-name,phone,skill, salaray, deptno, dept-name fields. If you insert a row without specifying a value for that column (or if you specify 0, NULL, or DEFAULT as the . Create table - create the table by defining data type as timestamp. How do I put three reasons together in a sentence? For example, if we agree that floating-point If he had met some scary fish, he would immediately return to the surface. ), spatial, and JSON. MySQL , programador clic, el mejor sitio para compartir artculos tcnicos de . You might need to create your own version of the MySQL database product, I'm not sure. following statements: On some platforms, the SELECT statement The open column is just a flag that can be set to true or false, but it should default to true, in this case 1. float(4) double(8) decimal( ) text varchar( ) date time datetime. Data is stored in the form of tables in the database. FLOAT (number) CREATE TABLE DemoTable ( MyFloat FLOAT (24), MyReal REAL ); GO INSERT INTO DemoTable VALUES (1899.982, 1899.982); GO SELECT * FROM DemoTable; GO DROP TABLE DemoTable; GO SQL Server FLOAT Data Type Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. been defined as DECIMAL rather "columnN" "data type"); Syntax CREATE TABLE table_name ( column1 datatype, column2 datatype, column3 datatype, .. ); The column parameters specify the names of the columns of the table. Would it be possible, given current technology, ten years, and an infinite amount of money, to construct a 7,000 foot (2200 meter) aircraft carrier? As you can see, the n is removed from the column definitions. In Python, the indexing of strings starts from 0 till n-1, where n is the size of the string. INSERT INTO `myTab` (`int`) VALUES (13.34); : SHOW WARNINGS; . The PHP reference implementation is now produced by The PHP Group. test should find differences within the tolerance value: Floating-point values are subject to platform or mysqldump on the source and reloading the Here values can be stored up to M digits in total where D represents the decimal point. Sqlalchemy : Column must be constructed with a non-blank 2,000 free sign ups available for the "Automate the What things should I learn and be able to do if I want a How to maintain and remember what you have learned while Is writing 'elif' the same as writing 'else:' and then 'if'? MySQL Data Types (Version 8.0) Each column in a database table is required to have a name and a data type. DOUBLE to demonstrate how CREATE TABLE table1 ( created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP, open boolean default 1 ); Note: you only need the DEFAULT CURRENT_TIMESTAMP if you want to, otherwise you can remove that and insert a timestamp manually. The following example uses In MySQL 8.0, this works for MyISAM, MEMORY , InnoDB, and ARCHIVE tables. Why doesn't Stockfish announce when it solved a position as a book draw similar to how it announces a forced mate? the numbers shows up around the tenth decimal or so, depending If the provided p is from 0 - 24 FLOAT is used. There may be many shortcomings, please advise. For example, the value 1196.104 could be inserted to FLOAT (11,7) or FLOAT (10,6). Can virent/viret mean "green" in an adjectival sense? timezone Java example to convert java I don't use MySQL but between PostgreSQL and Go you can pass around timestamps and time I don't use MySQL but between PostgreSQL . mysql -u root - p It will ask for the root password which you have kept during the MySQL installation. I need to check if this is affordable or if I can use something like sed for fixing the sql file after creation. I've tried to go there, I can select the type (i.e. PHP uses mysqli query () or mysql_query () function to create a MySQL table. Use AUTO_INCREMENT to create a column whose value can can be set automatically from a simple counter. For example, if the column data type is numeric, it means that only numerical data can be stored in the column and you can define its maximum length in brackets. If columns d1 and d2 had Dual EU/US Citizen entered EU on US Passport. thanks a lot. On Mysql cursorMysql ViewMysql triggerDROP TABLE IF EXISTS `book_2`;CREATE TABLE `book_2` ( `id` int(11) PRIMARY KEY auto_increment, `title` varchar(128) NOT NULL, `price` float(8,2) DEFAULT NULL COMMENT '', `publish` Mysql (cursor)(View)(trigger) . I have a table in mysql with a field type float(10, 7). is a property or characteristic of an entity. is a relationship between two entity types. We provide programming data of 20 most popular languages, hope to help you! The CREATE TABLE statement allows you to create a new table in a database. You can only use AUTO_INCREMENT on a column with an integer type. first decide on an acceptable tolerance for differences Attempts to create table [if not exists] name( // . List is getting changed when manipulated inside function. perform following using python and mysql. entity should be many. MySQL MySQLi Database Let us first create a table mysql> create table DemoTable ( Value float ); Query OK, 0 rows affected (0.95 sec) Insert some records in the table using insert command You can lead a horse to water, but you can't make them drink. the same as the value represented internally. All rights reserved. How do I parse a string to a float or int? Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. In our database PythonDB, the table Employee will have the four columns, i.e., name, id, salary, and department_id initially. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. > create table Employee (name varchar (20) not null, id int primary key, salary float . on factors such as computer architecture or the compiler For example, imagine your table has 15 columns and 100,000 rows. Thanks for contributing an answer to Stack Overflow! SQL commands are case insensitive i.e CREATE and create signify the same command. Just use chatgpt. Syntax $mysqli->query ($sql,$resultmode) Example Try the following example to create a table Copy and paste the following example as mysql_example.php DOUBLE - Double precision This table creates the following DDL code when using the Database Builder: Code: [Select] CREATE TABLE `gain_frequency` ( `id` INT NOT NULL, `resm_id` BINARY (16) NOT NULL, To use this mode of operation, replace the "mysql" token in the above URL with "mariadb": engine = create_engine("mariadb+pymysql://user:pass@some_mariadb/dbname?charset=utf8mb4") The above engine, upon first connect, will raise an error if the server version detection detects that the backing database is not MariaDB. If you want to sign up for the Budget Payment Plan or have any questions . The MySQL CREATE TABLE statement allows you to create and define a table. Python: MySQL Create Table. Floating-point numbers sometimes cause confusion because they For example, the value 1196.104 could be inserted to FLOAT(11,7) or FLOAT(10,6). A The float (1) to float (23) will create the Single Precision 32-bit column, which is actually Real data type. Create an account to follow your favorite communities and start taking part in conversations. create table test_with_float (first float(10, 6) not null primary key, second float(10, 0) null, third float null); insert into test_with_float values(1999.007, 1999007, 1999007) The result of select shows approximation for 3rd column: returns inf and -inf. We can create the new table by using the CREATE TABLE statement of SQL. I'm creating a MySQL diagram with a table with some column of type FLOAT and double precision, like the one attached to the end of this post. be different), they may do so because the difference between Reddit and its partners use cookies and similar technologies to provide you with a better experience. DOUBLE PRECISION) but then I'm not able to modify the value. What is the smallest computer chip you can run a python Press J to jump to the feed. Intersperse a vector of strings with a character or string. To produce a summary that includes all hours of the day, create a reference table that lists each hour Ok thanks. implementation dependencies. are approximate and not stored as exact values. On the other side, we have a decimal data type that comes under the numeric data types; we can use DEC as a decimal. How To Create Database In Mysql Tables Data Types In Mysql With Examples Dot Net Tutorials Mysql Create Table Statement With Examples Mysql Data Types Full List With Examples 2022 Mysql Workbench Manual 9 3 4 1 Creating A New Table Mysql Tutorial Let S See How To Create Tables In Sql Tutorials Lesson 06 Database Tables Or you could use FLOAT with no arguments, and it will not constrain the number of digits at all. I recommend coming up with a simple and meaningful name. ), string (CHAR, VARCHAR, etc. rev2022.12.11.43106. tolerance value. Subreddit for posting questions and asking for general advice about your python code. Table_name - It should be unique to that database. Please change the TableName from new_table to Employees. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. should be written to find differences larger than the dump file into the replica, tables containing floating-point To create a new table containing a foreign key column that references another table, use the keyword FOREIGN KEY REFERENCES at the end of the definition of that column. I have not read the full thread but why are length and scale 0 for the float in the screenshot below? I also suggest using lowercase. In MySQL, there are various data types that are grouped in numeric (integer, float, boolean, etc. INT : CREATE TEMPORARY TABLE `myTab` (`int` INT, `text` TEXT, `float` FLOAT); INT . Should I exit and re-enter EU with my EU passport or is it ok? By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. The data type of a column defines what value the column can hold: integer, character, money, date and time, binary, and so on. FLOAT with OTHER APPROXIMATE NUMERIC TYPES The example shows that FLOAT (24) and REAL values are identical. Connect and share knowledge within a single location that is structured and easy to search. Japanese. About GitLab GitLab: the DevOps platform Explore GitLab Install GitLab Find centralized, trusted content and collaborate around the technologies you use most. Suppose that you execute the following statements: CREATE TABLE t1 (c1 FLOAT (53,0), c2 FLOAT (53,0)); INSERT INTO t1 VALUES ('1e+52','-1e+52'); SELECT * FROM t1; On some platforms, the SELECT statement returns inf and -inf. What happens if you score more than 99 points in volleyball? It will open the following window to design a tbl. evaluate floating-point numbers differently. Not the answer you're looking for? If you want to store larger values, declare FLOAT with enough digits to hold the values you use. Float (24) to float (53) will create the Double Precision 64-bit column, Hence they become simply float. Cardinality Ans- (.) By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. There are some caveats about FLOAT. real is similar but is an IEEE standard floating point value, equivalent to float (24). It's the rounding error also in the first link Bill posted. to create a replica by dumping table contents with By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. (date/time, integer, floating . FLOAT - Single precision FLOAT(p) filter_none p represents precision in bits. The FLOAT and DOUBLE types represent approximate numeric data values. Here, we are using the root user. What type should I use to properly store the value 1196.104 in database. I' want to find a way to define a FLOAT type in the DDL, not a FLOAT(x, y), since FLOAT(x, y) and DOUBLE(X, y) are deprecated. PHP is a general-purpose scripting language geared toward web development. Ready to optimize your JavaScript with Rust? between the numbers and then do the comparison against the If you want to store larger values, declare FLOAT with enough digits to hold the values you use. In thiswebinar, Literacy KC faculty discuss how they are using Burlingtons technology-based curriculum to integrate digital literacy and English language skills into their program to promote student success. If you want to create a table, you should name the table and define its column and each column's data type. python mysql create table; python make database tables; create table mysql; create database table using python; mysql python create table if not exists; mysql show create table; python create table; python sql create table Will programmers become obsolete? Two tables in the same database may not share the same value. Press question mark to learn the rest of the keyboard shortcuts, SRE person // please don't DM me your questions. The CREATE TABLE statement is used to create a new table in a database. Would salt mines, lakes or flats be reasonably found in high, snowy elevations? Let's see the simple syntax to create the table. create table "tablename" ("column1" "data type", "column2" "data type", "column3" "data type", . They are also subject to platform or the purpose of answering questions, errors, examples in the programming process. I am trying to insert value 1196.104, Even when using phpmyadmin it converts that value to 1000.0000000. By using float data type we can represent the approximate numeric value, in MySQL float data types four bytes are used to store the single-precision value and eight bytes are used to store the double-precision values. SQLAlchemy/MySQL - Foreign Keys/References and Inserting SQLAlchemy: Object 'list' has no attribute sa instance? Creating a Database in MySQL and MariaDB Before we can look at tables, we need to configure an initial database environment within MySQL. How does legislative oversight work in Switzerland when there is technically no "opposition" in parliament? Hence SQL Server automatically maps it into Real data type. Is it possible to hide or delete the new Toolbar in 13.1? Create MySQL table with FLOAT and DOUBLE PRECISION, Re: Create MySQL table with FLOAT and DOUBLE PRECISION, Quote from: jepessen on September 22, 2020, 12:15:31 am, Quote from: jepessen on September 26, 2020, 01:52:34 am, Quote from: Geert Bellekens on September 26, 2020, 02:50:39 am. CREATE TABLE TableName (list of Column names and their attributes separated by comma); For instance, if you wanted to create an employee table with three columns, you'd do so with the following format: CREATE TABLE employee (Employee_ID int (8) Auto_increment, Employess_NAME VARCHAR (50) NOT NULL, Designation VARCHAR (10) NULL) The correct way to do floating-point number comparison is to . subject to floating-point error. Is it appropriate to ignore emails from a student asking obvious questions? 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