Gbase8s database select has an order by clause

ORDER BY Clause sorts the query results by the specified column or expression ;

ORDER BY Clause indicates that the query returns multiple rows . stay SPL in , If you specify ORDER BY Clause without

FOREACH Loop to handle SPL Lines returned individually within a routine , The database server sends an error .

The following queries are FROM Clause to specify the derived table , according to col1 Value sorts its rows , And declare vtab As a derived table

name , And vcol As the name of its unique column ：

SELECT vcol FROM

(SELECT FIRST 5 col1 FROM tab1 ORDER BY col1) vtab(vcol);

stay NLSCASE INSENSITIVE In the database ORDER BY

In order to NLSCASE INSENSITIVE Property to create a database , Yes NCHAR or NVARCHAR Columns of data type

And expressions do not distinguish between upper and lower case letters . therefore , Include ORDER BY Clause may be queried in the form of a variable

A sequence of uppercase and lowercase letters of returns a line , If the column or expression is NLS data type , And the data includes only the case of letters

Same value .

If the data set includes alphabetic case variables of the same string , Then process these as repetition , With a list according to their search order

Case variables for . for example , A series that is treated as a repetition NCHAR or NVARCHAR Strings may appear in this order

present ：

gAMma

GAmma

GaMMa

gamma

GAMMA

For more information , see also stay NLSCASE INSENSITIVE Duplicate rows in the database and In case sensitive data

In the library NCHAR and NVARCHAR expression .