SQL ORDER BY Two Columns You can also order by more than one column. Just separate the columns you wish to sort with a comma. If you wanted to sort Person by Last and First Name. SELECT FirstName, LastName FROM
The ORDER BY clause can include multiple columns in different sorting order (ascending or descending). When you include multiple columns with the ORDER BY clause, it will sort the records based on the first column, and if any two or more records have the same value in the first ORDER BY ...
It is possible to order by more than one column. For the case where we sort by two columns, the ORDER BY clause above becomesORDER BY "column_name1" [ASC, DESC], "column_name2" [ASC, DESC]Assuming that we choose ascending order for both columns, the output will be ordered in ascen...
> SELECT coalesce('6.1', 5); Error: CAST_INVALID_INPUT -- The least common type between a DECIMAL and a STRING is a DOUBLE > SELECT typeof(coalesce(1BD, '6')); DOUBLE -- Two distinct explicit collations result in an error > SELECT collation(coalesce('hello' COLLATE UTF8_BINARY, '...
Because DISTINCT may use GROUP BY, learn how MySQL works with columns in ORDER BY or HAVING clauses that are not part of the selected columns. See Section 12.20.3, “MySQL Handling of GROUP BY”. 因为distinct可能使用group by,了解MySQL如何处理按order by 列或者具有不属于所选列的子句。见12.2...
场景2:group by key包含所有列。 如下写法不推荐。 select * from t group by key, value; -- t has columns key and value 虽然MaxCompute2.0不会报错,但推荐改为如下。 select distinct key, value from t; bad.escape 说明:错误的escape序列问题。 按照MaxCompute规定,在String literal中应该用反斜线...
Rules of precedence for operators in an expression Sorting rows using the ORDER BY clause Substitution variables DEFINE and VERIFY commands 1、Restrict 限制(Where-condition)The essential capabilities of SELECT statement are Selection, Projection and Joining. Displaying specific columns from a table is ...
Ordering by two columns. This query first sorts in ascending order by the FirstName column, then sorts in descending order by the LastName column. Copy SELECT LastName, FirstName FROM Person.Person WHERE LastName LIKE 'R%' ORDER BY FirstName ASC, LastName DESC ; ...
ORDER BY column_name_1 DESC; The parameters used in the above-mentioned syntax are as follows : column_name_1, column_name_2, …, column_name_n:Columns or fields that have to be selected for the final result set table_name:Table from which the above-mentioned columns or fields have to...
The following example orders the result set by two columns. The query result set is first sorted in ascending order by theFirstNamecolumn and then sorted in descending order by theLastNamecolumn. SQL USEAdventureWorks2022; GOSELECTLastName, FirstNameFROMPerson.PersonWHERELastNameLIKE'R%'ORDERBYFir...