WebApr 6, 2024 · 3.“SELECT * FROM visitors ORDER by id DESC LIMIT 3”; 查询visitors表中最新的三条信息 测试思路: 在UA中构造语句: 例如:现在的UA为:Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/111.0 使用burp suite或者postman修改UA进行测试 例如UA修改为: User-Agent: ’ Use an order by. SELECT * FROM table1 ORDER BY id LIMIT 5 By the way, another way of getting the last 3 rows is to reverse the order and select the first three rows: SELECT * FROM table1 ORDER BY id DESC LIMIT 3 This will always work even if the number of rows in the result set isn't always 8. Share Improve this answer Follow
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WebFeb 4, 2024 · Both the SQL DESC and ASC keywords are used together in conjunction with the SELECT statement and MySQL ORDER BY clause. DESC and ASC syntax The SQL DESC sort keyword has the following basic syntax. SELECT {fieldName (s) *} FROM tableName (s) [WHERE condition] ORDER BY fieldname (s) ASC /DESC [LIMIT N] HERE WebSep 12, 2024 · It is a good practice to use the LIMIT clause along with the ORDER BY clause. Thus, we can specify the ORDER BY clause with the field on which the ordering is to be … how many endings does life is strange have
How to fix error “You have an error in your syntax; check the …
WebThe solution is to combine ORDER BY and LIMIT in the same query. For example, you want to obtain all the attributes of the customer who placed the most recent order. Here is the SQL query: SELECT customer_id, customer_name, email_address, last_order_date FROM customer ORDER BY last_order_date DESC LIMIT 1 WebApr 9, 2024 · We're selecting some records and ordering by ID. SELECT * FROM activities WHERE account_id IN (999102,989987,809354,100964) ORDER BY id DESC LIMIT 10; Here's an EXPLAIN plan from pganalyze. Look at that! We're spending almost 9 seconds scanning the index for activities.id 😯 This was baffling to me! We're using an index, why is this slow?! WebAug 24, 2024 · The ORDER BY statement in SQL is used to sort the fetched data in either ascending or descending according to one or more columns. By default ORDER BY sorts the data in ascending order. We can use the keyword DESC to sort the data in descending order and the keyword ASC to sort in ascending order. Sort according to one column: how many endings does simulacra have