你也可以

SELECT SQL_CALC_FOUND_ROWS * FROM tbl limit 0, 20

select语句的行数(没有限制)在同一个select语句中捕获，因此您不需要再次查询表大小。 使用SELECT FOUND_ROWS()获取行数;

如果您希望在存储过程中执行此操作，可以尝试此操作

SELECT * FROM tbl limit 0, 20.

不幸的是，使用公式不起作用，所以你可以执行一个准备好的语句，或者只是给过程的开始和结束值。

下面是我如何使用node.js和MySQL数据库解决这个问题。 首先，让我们声明变量!

    const 
        Key = payload.Key,
        NumberToShowPerPage = payload.NumberToShowPerPage,
        Offset = payload.PageNumber * NumberToShowPerPage;

NumberToShowPerPage是显而易见的，但是偏移量是页码。

现在SQL查询…

    pool.query("SELECT * FROM TableName WHERE Key = ? ORDER BY CreatedDate DESC LIMIT ? OFFSET ?", [Key, NumberToShowPerPage, Offset], (err, rows, fields) => {}));

我将把它分解一下。

Pool, is a pool of MySQL connections. It comes from mysql node package module. You can create a connection pool using mysql.createPool. The ?s are replaced by the variables in the array [PageKey, NumberToShow, Offset] in sequential order. This is done to prevent SQL injection. See at the end were the () => {} is? That's an arrow function. Whatever you want to do with the data, put that logic between the braces. Key = ? is something I'm using to select a certain foreign key. You would likely remove that if you don't use foreign key constraints.

希望这能有所帮助。

为查询定义OFFSET。例如

Page 1-(记录01-10):offset = 0, limit=10;

第2页-(记录11-20)offset =10, limit =10;

并使用以下查询:

SELECT column FROM table LIMIT {someLimit} OFFSET {someOffset};

第2页示例:

SELECT column FROM table
LIMIT 10 OFFSET 10;

从MySQL文档:

The LIMIT clause can be used to constrain the number of rows returned by the SELECT statement. LIMIT takes one or two numeric arguments, which must both be nonnegative integer constants (except when using prepared statements). With two arguments, the first argument specifies the offset of the first row to return, and the second specifies the maximum number of rows to return. The offset of the initial row is 0 (not 1): SELECT * FROM tbl LIMIT 5,10; # Retrieve rows 6-15 To retrieve all rows from a certain offset up to the end of the result set, you can use some large number for the second parameter. This statement retrieves all rows from the 96th row to the last: SELECT * FROM tbl LIMIT 95,18446744073709551615; With one argument, the value specifies the number of rows to return from the beginning of the result set: SELECT * FROM tbl LIMIT 5; # Retrieve first 5 rows In other words, LIMIT row_count is equivalent to LIMIT 0, row_count.

你也可以

SELECT SQL_CALC_FOUND_ROWS * FROM tbl limit 0, 20

select语句的行数(没有限制)在同一个select语句中捕获，因此您不需要再次查询表大小。 使用SELECT FOUND_ROWS()获取行数;