To help with this, SQL provides a way to sort your results by a given column in ascending or descending order using theORDER BYclause. Select query with ordered results SELECTcolumn, another_column, …FROMmytabl
Sorting query results helps make the report more readable and useful. The ORDER BY clause of the SELECT statement provides sorting capability. Null values, by definition, have an unknown value, so they cannot be logically placed in any order. To handle null values, Oracle database 10 g has ...
Forming groups in GROUP BY Removing duplicates in DISTINCT 在这样的场景下 hashing 是更好的选择,它能有效减少排序所需的额外工作。 Hashing Aggregation 利用一个临时 (ephemeral) 的 hash table 来记录必要的信息,即检查 hash table 中是否存在已经记录过的元素并作出相应操作: DISTINCT: Discard duplicate GROUP...
As you can see, the output is identical to that of the query above. The difference here is in the ORDER BY clause. Instead of specifying column names, the relative positions of selected columns in the SELECT list are specified. ORDER BY 2 means sort by the second column in the SELECT ...
Primary Expressions in SQL Timestamp Functions Functions on Strings Query execution plan Table Modelling and Design Handling Errors If you want to follow along with the examples, seeSample data to run queriesto view a sample data and use the scripts to load sample data for testing. The scripts...
In SQL Server, we can use the ORDER BY clause to sort data, just like in MySQL. Let’s sort the Department table by the code column in descending order: SELECT * FROM Department ORDER BY code DESC;Copy After executing the above query, we observe that the Department table is sorted in...
The following statement combines results with the MINUS operator, which returns only rows returned by the first query but not by the second: SELECT empno FROM empMINUSSELECT empno FROM oldemp;SORTING QUERY RESULTS To sort query result you can use ORDER BY clause in SELECT statement. ...
SAP Managed Tags: ABAP Development, SQL Hi Colleagues, We notice difference in the output when executing the SELECT queries on traditional DB and HANA. We are using side car approach so we have both the databases. SELECT Query 1 without HANA SELECT * FROM EKPO INTO TABLE LT_EKPO FOR ALL...
query The normalized statement string. db The default database for the statement, orNULLif there is none. exec_count The total number of times the statement has executed. total_latency The total wait time of timed occurrences of the statement. ...
You may have noticed in the preceding examples that the result rows are displayed in no particular order. It is often easier to examine query output when the rows are sorted in some meaningful way. To sort a result, use an ORDER BY clause. Here are animal birthdays, sorted by date: ...