This function performs to compare the argument expression specified to every search value line by line. In this processing, if the argument is found identical to a search, then the MySQL database displays the equivalent result. If the match does not exist, then the function returns to default....
另一个可能看起来更像Oracle的DECODE的MySQL选项是FIELD和ELT的组合。在下面的代码中，FIELD()返回与Age...
In a DECODE function, Oracle considers two nulls to be equivalent. If expr is null, then Oracle returns the result of the first search that is also null. 但是要注意的是,为这条SQL选择索引,只能对id列创建,不能对decode函数创建,因为Oracle不能基于未知的用户输入创建索引数据, 代码语言:javascript ...
13. areIndexOptionsEquivalent 检查是否是稀疏索引,是否是_ID索引,并且是否是唯一索引,注释里也说明了,不关心ID索引的排序顺序,因为升序或者降序,对查询来说,都是等价的,最后比较Options,注意version和ns是不比较的,background是创建时的参数,创建后就不再有意义 index_cursor.h 定义了一些游标接口方法,并声明了Yiel...
I will also compare DECODE() to CASE WHEN in Oracle and help you understand when to use each function. Finally, I will provide code for the equivalent transformations in SQL Server, PostgreSQL, and MySQL. Before we look at the practical examples, I recommend taking DataCamp’s Introduction ...
equivalent FORMAT() function in SSIS Error - Cannot map the lookup column, because the column data type is a binary large object block (BLOB). Error - Failure inserting into the read-only column "Adj_ID". Error : Offline Mode is SET to "True" Error : Opening a rowset for "Sheet$"...
A "tail -f" equivalent command in Powershell to show real time logging A call to SSPI failed A connection to the directory on which to process the request was unavailable. This is likely a transient condition. A fast way to remove duplicated lines from an unsorted text file? a lot of ...
ASCII equivalent is displayed when possible. This option is mainly useful for debugging. Mutually exclusive with --string. -h, --help Display usage information and exit -V, --version Display the version and exit FILES/dev/mem AUTHOR...
If you have the encoded text in your clipboard, you can use pbpaste to pipe it through base64 instead of having to manually paste in the terminal. There are equivalent commands when using X (xclip) but I’ve never used these myself. Using pbpaste: ...
Por último, proporcionaré código para las transformaciones equivalentes en SQL Server, PostgreSQL y MySQL. Antes de ver los ejemplos prácticos, te recomiendo que sigas el curso Introducción a Oracle SQL de DataCamp para refrescar tus conocimientos sobre el uso del dialecto PL/SQL. Además...