SELECT column_name(s) FROM table_name ORDER BY column_name(s) FETCH FIRST number ROWS ONLY; 旧版Oracle 语法: 代码语言:sql AI代码解释 SELECT column_name(s) FROM table_name WHERE ROWNUM <= number; 带有ORDER BY 的旧版 Oracle
SELECTTOP3*FROMCustomers WHERECountry='Germany'; 以下SQL 语句展示了 MySQL 的等效示例: SELECT*FROMCustomers WHERECountry='Germany' LIMIT3; 以下SQL 语句展示了 Oracle 的等效示例: SELECT*FROMCustomers WHERECountry='Germany' FETCHFIRST3ROWSONLY; 添加ORDER BY 关键字 在要对结果进行排序并返回排序后结果的...
DELETE 语句的结果是除去表的零行或更多行,具体取决于满足 WHERE 子句中指定的搜索条件的行数。 如果从 DELETE 语句中省略 WHERE 子句,那么 SQL 将从表中除去所有行。 DELETE 语句如下所示: DELETE FROMtable-nameWHEREsearch-condition ... 例如,假定部门 D11 已移至另一个站点。 删除 WORKDEPT 值为 D11 ...
http://dev.mysql.com/doc/refman/8.0/en/with.html.Single-TableSyntaxDELETE[LOW_PRIORITY][QUICK][IGNORE]FROMtbl_name[PARTITION (partition_name [, partition_name]...)][WHERE where_condition][ORDER BY ...][LIMIT row_count]TheDELETEstatement deletes rowsfromtbl_nameandreturnsthenumberofdeleted r...
SELECTcolumn_name(s)FROMtable_nameWHEREconditionLIMIT number; Oracle 12 语法: SELECTcolumn_name(s)FROMtable_nameORDERBYcolumn_name(s)FETCHFIRSTnumberROWSONLY; 旧版Oracle 语法: SELECTcolumn_name(s)FROMtable_nameWHEREROWNUM<=number; 带有ORDER BY 的旧版 Oracle 语法: ...
DELETEFROMtable_name; The following SQL statement deletes all rows in the "Customers" table, without deleting the table: Example DELETEFROMCustomers; Delete a Table To delete the table completely, use theDROP TABLEstatement: Example Remove the Customers table: ...
Delete Rows from the CSV file Delete single item in ListView, [WPF] Delete substring in string giving that substring Delete/remove a Visual C# class Deleting a Table from Database (MS Access) Deleting columns from multidimensional array Deleting rows conditionally from a DataTable Demonstrating Arr...
DELETEProduction.ProductCostHistoryWHEREStandardCostBETWEEN12.00AND14.00ANDEndDateISNULL; PRINT 'Number of rows deleted is ' + CAST(@@ROWCOUNT as char(3)); C. 使用游标以确定要删除的行 以下示例使用名为EmployeePayHistory的游标删除 AdventureWorks2022 数据库的complex_cursor表中的单行。 删除操作只影响当...
(NULL) DELETE a FROM pay_stream a INNER JOIN pay_main b ON a.pay_id = b.pay_id WHERE b.user_name = '1388888888'; id select_type table partitions type possible_keys key key_len ref rows filtered Extra --- --- --- --- --- --- --- --- --- --- --- --- 1 SIMPLE ...