限制结果数量

Created: November-22, 2018

ISO / ANSI SQL：

SELECT * FROM TableName FETCH FIRST 20 ROWS ONLY;

MySQL 的; PostgreSQL 的; SQLite 的：

SELECT * FROM TableName LIMIT 20;

甲骨文：

SELECT Id,
   Col1
FROM (SELECT Id,
           Col1,
           row_number() over (order by Id) RowNumber
      FROM TableName)
WHERE RowNumber <= 20

SQL Server：

SELECT TOP 20 * 
FROM dbo.[Sale]