aggregate_function (DISTINCT | ALL expression)Code language:SQL (Structured Query Language)(sql) Let’s examine the syntax above in greater detail: First, specify an aggregate function that you want to use e.g.,MIN,MAX,AVG,SUMorCOUNT. ...
aggregate_function(columnName) FROM tableName GROUP BY columnName HAVING count(*) > 1; SELECT columnName, aggregate_function(columnName) FROM tableName WHERE columnName operator value (optional) GROUP BY columnName; HAVING aggregate_function(columnName) operator value; SELECT genre, sum(cost) FROM...
ERRCODE_SYNTAX_ERROR 报错:syntax error at or near "xxxxx" 问题原因:SQL语法错误。 解决方法:重新检查SQL语法并修正。 ERRCODE_UNDEFINED_FUNCTION 报错:DISTINCT is not implemented for window functions 问题原因:Hologres目前不支持在窗口函数中使用DISTINCT关键字。
SQL_AGGREGATE_FUNCTIONS 3.0 SQLUINTEGER 位掩碼列舉匯總函式的支援:SQL_AF_ALLSQL_AF_AVGSQL_AF_COUNTSQL_AF_DISTINCTSQL_AF_MAXSQL_AF_MINSQL_AF_SUMSQL-92 入門層級一致性驅動程式一律會傳回所有支持的選項。 SQL_ALTER_DOMAIN 3.0 SQLUINTEGER 位掩碼,列舉 ALTER DOMAIN 語句中的 子句,如數據源支援的 SQL...
The general syntax of an aggregate function is: aggregate_function_name( [ALL | DISTINCT]expression) Theaggregate_function_namemay beAVG,COUNT,MAX,MIN, orSUM, as listed inTable 4-1. TheALLkeyword, which specifies the default behavior, evaluates all rows when aggregating the value of the funct...
For example, to filter out the sum of the grades of students with an average score greater than 60, if you do not use subqueries, you cannot add aggregate functions to WHERE in ordinary queries. For example, the following is an example of a syntax error: ...
aggregate_function: 聚合函数(如 COUNT、SUM、AVG 等)。 HAVING:用于对分组后的结果集进行筛选。 SELECT column_name(s),aggregate_function(column_name)FROM table_name GROUP BY column_name(s)HAVING condition condition: 筛选条件。 JOIN:用于将两个或多个表的记录结合起来。
syntaxsql -- Aggregate Function SyntaxVARP( [ALL|DISTINCT] expression )-- Analytic Function SyntaxVARP([ALL] expression)OVER( [partition_by_clause]order_by_clause) 参数 ALL 对所有值应用该函数。 ALL 为默认值。 DISTINCT 指定考虑每一个唯一值。
Syntax Copy SUM ( [ ALL | DISTINCT ] expression ) Arguments ALL Applies the aggregate function to all values. ALL is the default. DISTINCT Specifies that SUM return the sum of unique values. expression Is a constant, column, or function, and any combination of arithmetic, bitwise, and strin...
The basic SQL syntax for a union query that combines two SELECT statements is as follows: SELECT field_1 FROM table_1 UNION [ALL] SELECT field_a FROM table_a ; For example, suppose that you have a table named Products and another table named Services. Both tables have fields...