Set-returning functions(SRF)是一类返回集合(即多行)的函数。它们与返回单个值的标量函数相对。例如,generate_series、unnest、jsonb_array_elements等都是常见的SRF。这些函数在执行时会生成一系列的值,而不是单个值。 2. 为什么set-returning functions不允许在UPDATE语句中使用? 在SQL中,UPDATE语句用于修改表中的...
问Postgres错误:在CASE中不允许使用set返回函数ENSELECT 表名称.*,CASE WHEN ujz.字段名=1 THEN ...
问如何修复Postgres 12错误:不允许使用set返回函数ENTSINGSEE青犀视频开发的视频智能分析平台如EasyNVR、...
ERROR:0A000:set-returningfunctionsarenotallowedinindexexpressionsLINE1:createindexidx_a_1ona (jsonb_array_elements(js)); ^LOCATION: check_srf_call_placement, parse_func.c:2251 5、创建一个UDF,将SRF结果转换为ARRAY postgres=#createor replacefunctionsrf_to_arr(jsonb)returnstext[]as$$selectarray(s...
I ran into the same problem, and found that by using a SELECT cols INTO vars statement, you can return the values you are looking for, without returning a result set. Here's an example of function checking to see if a record exists in a table: CREATE FUNCTION ques_exists(p_quesid...
This implies: returning to the script is simply impossible when the exception handler has already been called, since an uncaught exception is not a notice. use your own debug- or notice-log-system for things like that.Furthermore: While is is still possible to call functions from your script...
Access modifiers are not allowed on static constructors. Access remote PC's share file by UNC path with username/password Access remote registry read / write with C# Access to Message Queuing system is denied Access to the path 'C:\' is denied. access to the port com1 is denied c# Acces...
A USE database statement is not allowed in a procedure, function or trigger. A week this year Against a week this time last year in SQL (NOT MDX) A WITH keyword and parenthesis are now required Accent Sensitivity Access Code - DELETE Statement with DISTINCTROW and T-SQL Access Now() vs...
Logical functionsThe TrueType instruction set includes a set of logical functions that can be used to test the value of a stack element or to compare the values of two stack elements. The logical functions compare 32-bit values (uint32) and return a Boolean value to the top of the stack....
Key errors seems to be: SQL error "0A000" - ERROR: set-returning functions are not allowed in CASE This change in the set-returning functions is confirmed in the PostgreSQL release notes and SQL docs: https://www.postgresql.org/docs/devel/release-10.html#id-1.11.6.14.4 https://www.pos...