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...
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 Person.Person ORDER BY LastName, FirstName Here are the results Results a...
# Query_time: 91.511261 Lock_time: 0.000124 Rows_sent: 2050008 Rows_examined: 2150010 Thread_id: 19187 Errno: 0 Killed: 0 Bytes_received: 0 Bytes_sent: 58061725 Read_first: 2 Read_last: 0 Read_key: 2 Read_next: 0 Read_prev: 0 Read_rnd: 0 Read_rnd_next: 2150012 Sort_merge_passes...
[l_orderkey])) |--Sort(ORDER BY:([ORDERS].[o_orderkey] ASC)) | |--Parallelism(Repartition Streams, PARTITION COLUMNS: ([ORDERS].[o_orderkey])) | |--Index Seek(OBJECT: ([tpcd1G].[dbo].[ORDERS].[O_DATKEYOPR_IDX]), SEEK:([ORDERS].[o_orderdate] >= Apr 1 2000 12:00AM...
> 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, '...
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...
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 ...
Compare the 3 columns and pick up the latest date Compare two tables on different server Compare two xml data by xquery in sql server Comparing columns with NULL values--Merge says unmatched when data is matched. Comparing two columns using a case statement Complex string_split / PIVOT challeng...
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 ...
/// </returns> public override DataFrame Execute(DataFrame input, Dictionary<string, dynamic> sqlParams){ // Drop NULL values and sort by id // input = input.DropNulls().OrderBy("id"); // Create empty output DataFrame with two columns // DataFrame output = new DataFrame(new...