declare @i int, @j int set @i = 1 create table #temp (id int) while (@i<=5) begin begin try begin transaction if (@i = 3) set @j = @i/0 insert into #temp values (@i) commit transaction end try begin catch rollback transaction print 'this is an exception'; end catch set...
Insert records into a tableThere are essentially two methods for adding records to a table. The first is to add one record at a time; the second is to add many records at a time. In both cases, you use the SQL statement INSERT INTO to accomplish...
insertintotbl_name (col1,col2)values(15,col1*2) ##正确insertintotbl_name (col1,col2)values(col1*2,15) ##错误 案例演示: ## 修改sid字段,添加auto_increment属性 mysql>altertablestudents modify sidintauto_increment; Query OK,2rowsaffected (0.23sec) Records:2Duplicates:0Warnings:0## 修改ge...
具体语法：TABLE table_name [ORDER BY column_name] [LIMIT number [OFFSET number]]其实从语法上看，可以排序，也可以过滤记录集，不过比较简单，没有 SELECT 那么强大。示例 1 简单的建一张很小的表 y1，记录数为 10 条。表 t1，插入 10 条记录 mysql-(ytt/3305)->create table t1 (r1 in...
jdbc批量执行SQL insert 操作 import java.io.BufferedReader; import java.io.FileReader; import java.util.ArrayList; public class ResolvFile { public static String readFileContent(String filepath) { //1.读取每一行记录,保存到List中 ArrayList<String>records = new ArrayList<String>();...
-- Returns only two of the records in the tableSELECTProductID, ProductName, Price, ProductDescriptionFROMdbo.ProductsWHEREProductID <60GO 您可以處理資料行中所傳回的值。 下列範例會在Price資料行上進行數學運算。 除非使用AS關鍵字提供名稱,否則以這種方式變更的資料行不會有名稱。
INSERT 语句 1. INSERT [LOW_PRIORITY | DELAYED | HIGH_PRIORITY] [IGNORE] 2. [INTO] tbl_name 3. [PARTITION (partition_name [, partition_name] ...)] 4. [(col_name [, col_name] ...)] 5. { {VALUES | VALUE} (value_list) [, (value_list)] ... ...
TheINSERT INTOstatement is used to insert new records in a table. INSERT INTO Syntax It is possible to write theINSERT INTOstatement in two ways: 1. Specify both the column names and the values to be inserted: INSERTINTOtable_name(column1,column2,column3, ...) ...
Records: 3 Duplicates: 0 Warnings: 0 Copying Data withSELECTStatements Rather than specifying data row by row, you can copy multiple rows of data from one table and insert them into another with aSELECTquery. The syntax for this sort of operation looks like this: ...
-- Returns only two of the records in the tableSELECTProductID, ProductName, Price, ProductDescriptionFROMdbo.ProductsWHEREProductID <60GO 您可以在返回列中的值时使用它们。 以下示例对Price列执行数学运算。 除非通过使用AS关键字提供一个名称,否则以此方式更改的列将没有名称。