round(SUM(y)over(ORDERBYn))yFROM(SELECTn,cos(n/30*3.1415926)*2x,sin(n/30*3.1415926)yFROM(SELECTrownum-1nFROMall_objectsWHERErownum<=30+30)))a,(SELECTn,(SUM(x)over(ORDERBYn))x,round(SUM(y)over(ORDER
SELECTstor_id,qtyFROM(SELECTstor_id,qtyFROMsalesWHEREqty>50)AStemp_table;2、UNION UNION运算符从...
TopRegions AS ( SELECT Region FROM RegionalSales WHERE TotalSales > (S...
例如在usertable和citytable表中同时存在cityid列,在查询两个表中的cityid时应 使用下面语句格式加以限定: 复制内容到剪贴板 代码: SELECT `username`,citytable.cityid FROM `usertable`,`citytable` WHERE usertable.cityid=citytable.cityid 在FROM子句中可用以下两种格式为表或视图指定别名: 表名as 别名 表...
[ WHERE <filter_predicate> ] [ WITH ( <index_option> [ ,... n ] ) ] [ ON { partition_scheme_name ( column_name ) | filegroup_name | default } ] [ FILESTREAM_ON { filestream_filegroup_name | partition_scheme_name | "NULL" } ] } <table_option> ::= { [ DATA_COMPRESSION =...
DELIMITER // CREATE PROCEDURE my_procedure (IN param1 INT, OUT result INT) BEGIN -- 存储过程的SQL语句SELECT column1 INTO result FROM my_table WHERE another_column = param1; END // DELIMITER ; 在上述示例中: my_procedure 是存储过程的名称。 (IN param1 INT, OUT result INT) 定义了输入参数...
Test Value'; EXEC InsertUnitMeasure @UnitMeasureCode = 'XYZ', @Name = 'Test Value'; EXEC InsertUnitMeasure @UnitMeasureCode = 'ABC', @Name = 'Another Test Value';SELECT*FROM#MyTempTable;-- CleanupDELETEFROMProduction.UnitMeasureWHEREUnitMeasureCodeIN('ABC','XYZ');DROPTABLE#MyTempTable; ...
If you specify a join hint in the same query's FROM clause for a specific table pair, this join hint takes precedence in the joining of the two tables. The query hints, though, must still be honored. The join hint for the pair of tables might only restrict the selection of...
In the Server name box, type tcp: to specify the protocol, followed by the computer name, a comma, and the port number. To connect to the default instance, port 1433 is implied and can be omitted; therefore, type tcp:<computer_name>, where <computer_name> is the name of the computer...
mysql> INSERT DELAYED INTO student_primary SELECT * FROM students WHERE stu_id > 30; 3>.INSERT ON DUPLLICATE KEY UPDATE 语句详解 当INSERT语句中使用ON DUPLICATE KEY UPDATE子句时,如果碰到当前插入的数据违反主键或者唯一性约束,则INSERT会转变成UPDATE语句修改对应依旧存在表中的这条数据。当然,ON DUPLIC...