What is the major difference between Varchar2 and char(Varchar2 和 char 之间的主要区别是什么)

What is the difference between Scope_Identity(), Identity(), @@Identity, and Ident_Current()?(Scope_Identity()、Identity()、@@Identity 和 Ident_Current() 之间有什么区别?)

Equivalent of LIMIT and OFFSET for SQL Server?(SQL Server 的 LIMIT 和 OFFSET 等价物?)

Difference between JOIN and INNER JOIN(JOIN 和 INNER JOIN 的区别)

DateTime2 vs DateTime in SQL Server(SQL Server 中的 DateTime2 与 DateTime)

Can I use CASE statement in a JOIN condition?(我可以在 JOIN 条件中使用 CASE 语句吗?)

TSQL Pivot without aggregate function(没有聚合函数的 TSQL Pivot)

Oracle: how to UPSERT (update or insert into a table?)(Oracle:如何 UPSERT(更新或插入表?))

How can I schedule a job to run a SQL query daily?(如何安排作业每天运行 SQL 查询?)

How to load a large number of strings to match with oracle database?(如何加载大量字符串与oracle数据库匹配?)

Optimal way to concatenate/aggregate strings(连接/聚合字符串的最佳方式)

Oracle SQL query: Retrieve latest values per group based on time(Oracle SQL 查询:根据时间检索每组的最新值)

Using Alias In When Portion of a Case Statement in Oracle SQL(在 Oracle SQL 中 Case 语句的 When 部分中使用别名)

Inserting multiple rows in a single SQL query?(在单个 SQL 查询中插入多行?)

Why does Oracle 9i treat an empty string as NULL?(为什么 Oracle 9i 将空字符串视为 NULL?)

Only inserting a row if it#39;s not already there(仅在不存在的情况下插入一行)

Split comma separated values to columns in Oracle(将逗号分隔的值拆分为 Oracle 中的列)

What is the best way to paginate results in SQL Server(在 SQL Server 中对结果进行分页的最佳方法是什么)

Oracle SQL pivot query(Oracle SQL 数据透视查询)

Best way to do multi-row insert in Oracle?(在 Oracle 中进行多行插入的最佳方法?)