SELECT column1, column2, … FROM table_name WHERE condition1 AND condition2 AND condition3 ...; Or Syntax SELECT column1, column2, … FROM table_name WHERE condition1 OR condition2 OR condition3 ...; Not Syntax SELECT column1, column2, ...FROM table_nameWHERE NOTcondition; 例:The fo...
SELECT ID FROM dbo.employee WHERE ID > 5 and ID < 10; COMMIT; SQL Copy --Transaction 2 BEGIN TRAN; INSERT INTO dbo.employee (Id, Name) VALUES(6 ,'New'); COMMIT; Missing and double reads caused by row updates Missing an updated row or seeing an updated row multiple times Transa...
這是包含有效 <search_condition> 的任何 WHERE 子句,可篩選 <dml_statement_with_output_clause> 傳回的資料列。 如需詳細資訊,請參閱搜尋條件 (Transact-SQL)。當 <search_condition> 用於此內容時,不能包含子查詢、執行資料存取的純量使用者定義函數、彙總函數、TEXTPTR 或全文檢索搜尋述詞。DEFAULT VALUES 適...
DELTA_AGGREGATION_NOT_SUPPORTED、GROUP_BY_AGGREGATE、GROUP_BY_POS_AGGREGATE、INVALID_AGGREGATE_FILTER、INVALID_WHERE_CONDITION 42908 語句不包含必要的資料列清單。 DELTA_CLUSTER_BY_SCHEMA_NOT_PROVIDED、DELTA_SCHEMA_NOT_PROVIDED、SPECIFY_CLUSTER_BY_WITH_BUCKETING_IS_NOT_ALLOWED、SPECIFY_CLUSTER_BY_WITH_PAR...
insert into user(email,name) values('aaa@qq.com','aaa'); 1062 - Duplicate entry 'aaa@qq.com' for key 'uk-email', Time: 0.005000s 1. 2. 3. 4. 5. 6. 此时对于唯一性来说是没问题的,可以保证业务的email的唯一性。假设随着业务的发展,此时需要增加手机号注册功能,那么表中就需要增加手机号...
Case Statement returning multiple values CASE statement returns "Invalid Column Name" Error Case statement that increments variable with 1 is giving error Case Statement using Divide CASE Statement when not null , else if Help Case statement with Between in Where Clause Case statement with Date Compa...
The index is defined as one or more columns of the table and has an optional condition that filters the rows.A nonclustered columnstore index enables real-time operational analytics where the OLTP workload uses the underlying clustered index while analytics run concurrently on the columnstore index...
VALUES('Explosives', 129.35, 50, TRUE); SELECT * FROM products; The code should create a table as shown: SQL Like Example #1 Let us now look at various examples of the SQL LIKE operator. Suppose we wish to fetch the records where the product name start’s with “E”, we can use ...
SELECT last_name, first_name FROM hr.employees WHERE last_name LIKE 'K%' ORDER BY last_name, first_name; The database retrieves all rows satisfying theWHEREcondition, also called thepredicate, in a single step. The database can pass these rows as a unit to the user, to another SQL ...
DEFAULT definitions cannot be created for columns with alias data types if the alias data type is bound to a default object. CHECK Constraints A column can have any number of CHECK constraints, and the condition can include multiple logical expressions combined with AND and OR. Multiple CHECK co...