WHERE name IN ('Google','菜鸟教程'); 1. 2. IN 与 = 的异同 相同点:均在WHERE中使用作为筛选条件之一、均是等于的含义 不同点:IN可以规定多个值,等于规定一个值 IN SELECT column_name(s) FROM table_name WHERE column_name IN (value1,value2,...); = SELECT column_name(s) FROM table_name...
With the SQL WHERE clause in SQL Server, users can filter their query results in many ways. In most cases, we do not utilize all the options the WHERE clause provides, so we tend to forget that they exist. In this SQL tutorial, we will look at several examples of how to use the WH...
The SQL WHERE IN clause is a powerful tool that allows you to specify multiple values in a WHERE clause. This can be very useful when you want to find records in a database that have a specific value in one column and another value in another column or table. The SQL WHERE IN clause...
select * from table1 WHERE (CM_PLAN_ID,Individual_ID) IN ( Select CM_PLAN_ID, Individual_ID From CRM_VCM_CURRENT_LEAD_STATUS Where Lead_Key = :_Lead_Key ) But the WHERE..IN clause allows only 1 column. How can I compare 2 or more columns with another inner SELECT? sql-server ...
WHERECountry='Mexico'; Try it Yourself » Syntax SELECTcolumn1,column2, ... FROMtable_name WHEREcondition; Note:TheWHEREclause is not only used inSELECTstatements, it is also used inUPDATE,DELETE, etc.! Demo Database Below is a selection from theCustomerstable used in the examples: ...
This SQL tutorial explains how to use the SQL WHERE clause with syntax and examples. The SQL WHERE clause is used to filter the results and apply conditions in a SELECT, INSERT, UPDATE, or DELETE statement.
使用关联查询,并用组合的字段,起别名的方式过滤,报错提示:SQL 错误 [1052] [23000]: Column 'code' in where clause is ambiguous selectconcat(ti.code,'-', sti.code)ascode, sti.*, ti.nameastask_namefromsub_task_info stileftjointask_info tionti.id=ti.task_idwherecodelike'%001%'; ...
有关SQL IN 运算符的要点: The SQL IN operator allows you to specify multiple values in a WHERE clause. It checks if a specified value matches any value in a list. It simplifies querying for records that match multiple criteria without needing to use multiple OR conditions. ...
WHERE ClauseText Fields vs. Numeric Fields Examples Explained SQL AND, OR and NOT Operators Examples Explained SQL ORDER BY Examples Explained SQL NULL Values w3schoolsCERTIFIED.2022 Get Certified! Take the SQL exam and become w3schools certified!!
Let’s explore SQL WHERE Clause examples in this section. SQL WHERE statement with Numeric comparison You can use where clause with a numeric comparison for a supported column type such as int, bigint. 1 2 3 SELECT*FROMSalesLT.SalesOrderDetailWHEREOrderQty=1 ...