造成这个问题的原因是因为我是在SQL语句里面调用这个PL/SQL函数的,因为SQL语句和PL/SQL函数是通过不同的engine(SQL engine 和 PL/SQL engine) 来解析执行的,因此在SQL语句中执行的FUNCTION必须是public的,这样SQL engine才能访问的。 解决这个问题的方法要么就是将function 公有化,即放在package specification中,或者...
PLS-00231错误:function name may not be used in SQL 2013-04-25 编译时提示这个错误,搜了下,原来是因为如果该函数没有在包头定义的话,sql语句是见不到该函数的,因此如果想在sql级别使用这个函数,只能在包头上定义该函数,即只能作为公有的暴露出来了,否则只能采用plsql的方式即 xxxx := function; 具体可以参...
In MSTVFs, @return_variable is a TABLE variable, used to store and accumulate the rows that should be returned as the value of the function. @ return_variable can be specified only for Transact-SQL functions and not for CLR functions. select_stmt The single SELECT statement that defines the...
Because this does not directly determine the underlying SQL support, however, scrollable cursors may not be supported, even for a SQL-92 Intermediate level-conformant driver. SQL_DYNAMIC_CURSOR_ATTRIBUTES2 3.0 An SQLUINTEGER bitmask that describes the attributes of a dynamic cursor that are ...
Added in MySQL 5.7.22. MAX([DISTINCT] expr) Returns the maximum value of expr. MAX() may take a string argument; in such cases, it returns the maximum string value. See Section 8.3.1, “How MySQL Uses Indexes”. The DISTINCT keyword can be used to find the maximum of the distinc...
IfFunctionIdis SQL_API_ODBC3_ALL_FUNCTIONS,SupportedPtrpoints to a SQLSMALLINT array with a number of elements equal to SQL_API_ODBC3_ALL_FUNCTIONS_SIZE. This array is treated by the Driver Manager as a 4,000-bit bitmap that can be used to determine whether an ODBC 3*.x* or earlier...
But functions are not created[29 Jun 2012 6:46] Valeriy Kravchuk This is what I get in mysql command line client when recent MySQL version is used: C:\Program Files\MySQL\MySQL Server 5.5\bin>mysql -uroot -proot -P3312 test Welcome to the MySQL monitor. Commands end with ; or \g...
If the function is nondeterministic, include the following statement in the item constructor to indicate that function results should not be cached: current_thd->lex->safe_to_cache_query=0; A function is nondeterministic if, given fixed values for its arguments, it can return different results...
When I was studying in the middle school, I hoped to have a cellphone. However, at that time, my parents believed that cellphone is not useful for me and may cause bad results such as that I use cellp... what do you want to be ...
Whether the function is deterministic. A function is deterministic when it returns only one result for a given set of arguments. You may mark a function asDETERMINISTICwhen its body is not and vice versa. A reason for this may be to encourage or discourage query optimizations such as constant...