Syntax error near 'syntax_error' - How to solve MySQL error: syntax error

How to solve MySQL error: syntax error, specific code examples are required

Introduction:
MySQL is a widely used relational database management system, but in During the development process, many developers will encounter MySQL errors. Among them, grammatical errors are one of the more common errors. This article will introduce some common MySQL syntax errors and solve these problems through specific code examples.

Text:

1. Use reserved words as table names or column names:
   In MySQL, there are some reserved words used for specific purposes. If these reserved words are used As part of a table or column name, a syntax error occurs. The way to solve this problem is to use backticks (`) to wrap reserved words.

For example, if we want to create a table named order, an error will be reported.

Solution:

CREATE TABLE `order` (
   `id` INT,
   `name` VARCHAR(50)
);

2. Missing keywords or using wrong keywords:
   When writing SQL statements, you often encounter situations where keywords are used incorrectly or keywords are missing. . At this time, you need to carefully check the SQL statement to ensure the correct use of keywords.

For example, we want to query users named "John", but when writing the SQL statement, the keyword SELECT is spelled as "SELET", and an error will be reported.

Solution:

SELECT * FROM users WHERE name = 'John';

3. Spelling errors or extra characters:
   When writing SQL statements, spelling errors or extra characters can also cause grammatical errors. This is when the code needs to be carefully reviewed and any necessary corrections made.

For example, we want to insert a record into the users table, but when writing the INSERT statement, "INTO" is spelled incorrectly as "IMTO".

Solution:

INSERT INTO users (id, name) VALUES (1, 'John');

4. Missing quotation marks or mismatched quotation marks:
   When writing SQL statements, if the quotation marks are not used correctly, or the quotation marks do not match, it will also cause Syntax errors occur.

For example, we want to insert a record into the table, but while writing the INSERT statement, we forget to use quotes around the text type value.

Solution:

INSERT INTO users (id, name) VALUES (1, 'John');

5. Wrong function usage:
   When using MySQL functions, syntax errors are also prone to occur. At this time, you need to carefully check how the function is used and call it according to the correct syntax.

For example, we want to count the number of records in the users table, but when writing the COUNT function, we forgot to add parentheses after the function name.

Solution:

SELECT COUNT(*) FROM users;

Summary:
In development, it is very common to encounter MySQL errors. This article introduces methods to solve MySQL syntax errors from the use of reserved words, use of keywords, spelling errors, use of quotation marks, and use of functions, and explains it through specific code examples. I hope this article can help developers better solve MySQL error problems and improve development efficiency.

Reference materials:

1. MySQL official documentation - https://dev.mysql.com/doc/
2. MySQL error list - https://dev. mysql.com/doc/refman/8.0/en/error-messages-server.html

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