SQLExamples ❮ PreviousNext ❯ SQL Syntax Example Explained SQL SELECT SELECT ColumnSELECT * SQL SELECT DISTINCT SELECT DISTINCT Examples Explained SQL WHERE WHERE ClauseText Fields vs. Numeric Fields Examples Explained SQL AND, OR and NOT Operators ...
-- we're using the "text" column type here, but a real application-- might use "citext" which is available in a postgres contrib moduleCREATETABLEusers ( email textPRIMARYKEY );SELECTcreate_reference_table('users'); 随着时间的推移,想象一些非地址进入表中。 INSERTINTOusersVALUES('foo@example...
IfTableTypeis not an empty string, it must contain a list of comma-separated values for the types of interest; each value can be enclosed in single quotation marks (') or unquoted, for example, 'TABLE', 'VIEW' or TABLE, VIEW. An application should always specify the table type in uppe...
在 MySQL 中,可以使用以下 SQL 语句创建一个包含 SMALLINT 类型字段的表: CREATE TABLE example_table ( id INT PRIMARY KEY, small_number SMALLINT ); 在上述代码中,example_table表包含 id 和 small_number 两个字段,其中 small_number 的数据类型为 SMALLINT。 MEDIUMINT MEDIUMINT 是一种整数数据类型,用于...
Example 2-50 Simple CASE Expression 代码语言:javascript 代码运行次数:0 运行 AI代码解释 DECLAREgradeCHAR(1):='B';appraisalVARCHAR2(20);BEGINappraisal:=CASEgradeWHEN'A'THEN'Excellent'WHEN'B'THEN'Very Good'WHEN'C'THEN'Good'WHEN'D'THEN'Fair'WHEN'F'THEN'Poor'ELSE'No such grade'END;DBMS_OUTPU...
Private Endpoint example This template shows how to create a private endpoint pointing to Azure SQL Server Provision a Web App with a SQL Database This template provisions a Web App, a SQL Database, AutoScale settings, Alert rules, and App Insights. It configures a connection string in the...
SAPHANA学习(1):SAP HANA SQL Reference 3.SAP HANA SQL Reference 3.1注释 /*1.注释*/--单行注释/*多行注释*/ 3.2标志符 /*2.标识符*//*用来定义table name,column name,index name,function name,procedure name等 1.使用双引号括起来的标志符可以是任何字符...
Code Example See SQLBindCol, SQLGetData, and Sample ODBC Program. Related Functions Expand table For information aboutSee Binding a buffer to a column in a result set SQLBindCol Function Canceling statement processing SQLCancel Function Executing a commit or rollback operation SQLEndTran Function Exec...
For example, this query would select only the countries that are not also listed in the table indep_countries: "COUNTRY_NAME" NOT IN (SELECT "COUNTRY_NAME" FROM indep_countries) This query would return the features with a GDP2006 greater than the GDP2005 of any of the fe...
In the following example, an application prepares a SQL statement to insert data into the ORDERS table. For each parameter in the statement, the application callsSQLBindParameterto specify the ODBC C data type and the SQL data type of the parameter, and to bind a buffer to each parameter. ...