This example shows a simple use of the MIN function on a number field. We’ve used an alias here on the column to make it easier to read and work with SELECTMIN(fees_paid)ASMIN_TESTFROMstudent; Result: MIN_TEST 0 It shows the value of 0 as that is the lowest value in the fees_...
analytic_clause(optional): This is used when you want to use AVG as an analytic function. It works similar to grouping data with the AVG function, but it’s a bit different. Refer to the examples below for more information. Examples of the AVG Function Here are some examples of the AVG...
Example: SQL SUM() function with WHERE clause SQL AVG() Function The SQLAVG()function is used to calculate the average of numeric values in a column. It has the following syntax: SELECTAVG(column_name)FROMtable; Here, AVGis the function that returns the aggregate of numeric values column_...
Let's apply now the FORMAT() SQL Date Function on above"Example Table 2"consisting of the order information. A similar output will be generated with the use of the FORMAT() function of MS SQL Server. It is to be noted here that Format() functions can only be used in MS SQL Server ...
('test_alias.py', 'py', file_obj=myfunc) o.create_function('test_alias_func', class_type='test_alias.Example', resources=['test_alias.py', 'test_alias_res1']) table = o.create_table( 'test_table', schema=Schema.from_lists(['size'], ['bigint']), if_not_exists=True ) ...
SQL AS With Expression We can combine data from multiple columns and represent it in a single column using the CONCAT() function. For example, SELECT CONCAT(first_name, ' ', last_name) AS full_name FROM Customers; Here, the SQL command selects first_name and last_name. And, the name...
CREATE [ OR ALTER ] FUNCTION [ schema_name. ] function_name ( [ { @parameter_name [ AS ] [ type_schema_name. ] parameter_data_type [ NULL ] [ = default ] [ READONLY ] } [ , ...n ] ] ) RETURNS return_data_type [ WITH <function_option> [ , ...n ] ] [ AS ] BEGIN...
Example 2-51 Simple CASE Expression with WHEN NULL 代码语言:javascript 代码运行次数:0 运行 AI代码解释 DECLAREgradeCHAR(1);--NULLbydefaultappraisalVARCHAR2(20);BEGINappraisal:=CASEgradeWHENNULLTHEN'No grade assigned'WHEN'A'THEN'Excellent'WHEN'B'THEN'Very Good'WHEN'C'THEN'Good'WHEN'D'THEN'Fair...
A RexNode might be a reference to a field from an input to the RedNode, a function call (RexCall), a window (RexOver), etc. The operator within the RexCall defines what the node does, and operands define arguments to the operator. For example, 1 + 1 would be represented as a Rex...
操作符AND和OR是可交换的,也就是说,你可以交换左右操作数而不影响结果。 2. 比较函数和操作符 常见的比较操作符都可用,如Table 9-1所示。 Table 9-1. 比较操作符 Note: !=操作符在分析器阶段被转换成<>。不能把!=和<>操作符实现为做不同的事。