I can't figure out how to specify multiple commands for a rule.
According to the documentation, the syntax for creating a rule is:
CREATE [ OR REPLACE ] RULE name AS ON event
TO table [ WHERE condition ]
DO [ ALSO | INSTEAD ] { NOTHING | command | ( command ; command ... ) }
As per this definition, I have tried to create the following rule:
CREATE TABLE "test" (
"b" boolean NULL
);
-
CREATE OR REPLACE RULE test AS
ON UPDATE TO test DO INSTEAD
(
INSERT INTO test (b) SELECT FALSE;
INSERT INTO test (b) SELECT FALSE;
)
However, what happens is very weird - this query fails to parse the first insert complaining about syntax error at end of input LINE 4: INSERT INTO test (b) SELECT FALSE, but at the same time executes the rest of the query, therefore incorrectly creating a rule with just one insert command.
Notes: My version is 9.0 and I have not found a single example of a multi-command rule anywhere.
So, how do I correctly define multiple commands for a rule? Is it even possible?
As per comments, the problem lies in the database management tool I used - Adminer.
It somehow slices/corrupts the query, so you cannot create more than one command in a rule.
Note that this bug is present even in the (as of now) latest version 3.7.1.
Thanks a_horse_with_no_name for helping me resolve this issue.
Related
I am working with Delphi 7 and Firebird 2.0. In my application I am using TIBScript components. The problem arises when I use local variables in the script. Firebird requires the names of local variables to be preceded by a colon in some cases. That’s where the problem lies in. The application stops showing the error message:
Dynamic SQL Error
SQL error code = -104
Token unknown - line 4, column 66
?
The token in question is the colon. Here is how my script looks like:
SET TERM ^ ;
EXECUTE BLOCK AS
DECLARE test_variable INT;
BEGIN
SELECT tt.id FROM test_table tt WHERE tt.name LIKE 'abc%' INTO :test_variable;
INSERT INTO test_table2(id, test_column)
VALUES(1, :test_variable);
INSERT INTO test_table3(id, test_column)
VALUES(1, :test_variable);
...
END^
SET TERM ; ^
The same script executes without any errors when run from IBExpert.
How can I use local variables in a TIBScript? Any help would be appreciated!
I want to add that this problem occurs only with variables inside an EXECUTE BLOCK construct. There is no problem with local variables in stored procedure and trigger definitions.
After executing the method TIBSQL.PreprocessSQL (Unit IBX.IBSQL line 2362), parameters marked with ":" on the front are replaced by "?". So you should use parameters without ":". Also I think it should be removed SET TERM. Instead, to set terminator value use the IBScript.Terminator property.
P.S. I watched unit IBX.IBSQL in Delphi 10.3 Rio.
this
EXECUTE BLOCK AS
DECLARE test_variable INT;
BEGIN
SELECT tt.id FROM USERS tt WHERE (tt.fname LIKE 'abc%') INTO test_variable;
END;
is executed properly when
IBScript.Terminator = ^;
Edit:
You can't execute INSERT with parameters in EXECUTE BLOCK using TIBScript component.
As Mark Rotteveel comented:
Unfortunately removing the colon is only an option in the into clause
in not with other occurrences of local variables or parameters.
I have the following query:
SELECT 'curl -s http://www.mde.operator.com/MRE/api?profile=CANCEL_AUTH&mode=assync-oneway&Auth='||json_extract_path_text(external_reference_id,'transactionIdAuth') + '&NUM=' + phone FROM dbo.cancelled WHERE id like '%Auth%';
It will bring more than 60 thousands results, but the json is broken and I cannot manage to delete the broken lines.
Is there any way to skip the rows which shows any kind of errors?
Note: It isn't null rows.
I've already try:
json_extract_path_text(regexp_replace(event_properties,'\\\\.',''),'someValue')
You can make them null rows though, by setting the null_if_invalid argument of the json_extract_path_text function to true.
Source: https://docs.aws.amazon.com/redshift/latest/dg/JSON_EXTRACT_PATH_TEXT.html
When I try ls -1 (in powershell) to try and get into my table and check it, I get some sort of menu "...>" that I can't .quit out of. when I close out and run sqlite3 -init ex1.sql ex1.db (my example I'm working with, I get " Error: near line 1: table person already exists " when it in fact, does not. how do I get out of this menu, and how do I fix my code? Also, what IS this menu?
My sql code:
CREATE TABLE person (
id INTEGER PRIMARY KEY,
first_name TEXT,
last_name TEXT,
age INTEGER
);
...> is shown by the sqlite3 command-line shell (not PowerShell) when you have not finished the current SQL command. Typically, you forgot the terminating ;, or you forgot a ' and are still inside a string.
Maybe you didn't specify what is the database in which you are working. For example before creating the table, use .open <name_database.db> and after run you CREATE TABLE statements.
Also the 3 dots ...> means that you didn't write the complete command, most often you didn't put the semicolon ; or you didn't close well the '. You can exit from this menu by killing the process or complete the command.
I have this Benchmark function:
BenchmarkMyTest(b *testing.B) {
}
And I would like to run only this function not running all other tests, but the command never worked for me.
go test -bench='BenchmarkMyTest'
or
go test -run='BenchmarkMyTest'
What's the correct way of running one single benchmark function in Go?
It says to use regex but I can't find any documentation.
Thanks,
Described at Command Go: Description of testing flags:
-bench regexp
Run benchmarks matching the regular expression.
By default, no benchmarks run. To run all benchmarks,
use '-bench .' or '-bench=.'.
-run regexp
Run only those tests and examples matching the regular
expression.
So the syntax is that you have to separate it with a space or with the equal sign (with no apostrophe marks), and what you specify is a regexp:
go test -bench BenchmarkMyTest
go test -run TestMyTest
Or:
go test -bench=BenchmarkMyTest
go test -run=TestMyTest
Specifying exactly 1 function
As the specified expression is a regexp, this will also match functions whose name contains the specified name (e.g. another function whose name starts with this, for example "BenchmarkMyTestB"). If you only want to match "BenchmarkMyTest", append the regexp word boundary '\b':
go test -bench BenchmarkMyTest\b
go test -run TestMyTest\b
Note that it's enough to append it only to the end as if the function name doesn't start with "Benchmark", it is not considered to be a benchmark function, and similarly if it doesn't start with "Test", it is not considered to be a test function (and will not be picked up anyway).
I found those answers incomplete, so here is more to the topic...
The following command runs all Benchmarks starting with BenchmarkMyTest (BenchmarkMyTest1, BenchmarkMyTest2, etc...) and also skip all tests with -run=^$ .
You can also specify a test duration with -benchtime 5s or you can force b.ReportAllocs() with -benchmem in order to get values like:
BenchmarkLogsWithBytesBufferPool-48 46416456 26.91 ns/op 0 B/op 0 allocs/op
the final command would be:
go test -bench=^BenchmarkMyTest . -run=^$ . -v -benchtime 5s -benchmem
In booggie 2, how can I execute a script (programmed in Python) out of a rule and pass the script's return value to the rule?
Please note: The booggie-project does not exist anymore but led to the development of Soley Studio which covers the same functionality.
exec is the command to execute rules and scripts out of a rule. It is followed by parentheses containing a sequence composed of rules and scripts.
There is a strict order in which the application sequence in a rule is executed, (cf. Is there a fixed order of how the right-hand side of a rule is executed in GrGen.NET?). exec is always the last statements that's executed (before return of course). Hence, we can't pass a variable from exec to eval. Therefore, variables resulting from the execution of scripts in exechave to assigned to node/edge-attributes within the exec statement. To do so, we use curly brackets and write the same code as we would in an eval statement.
In the following example, a script is called that returns the highest value of three given values (a.value, b.value, c.value) and stores it a node's attribute (d.value).
exec ((max_value) = getMaxValue(a.value, b.value, c.value) ;>
{
d.value = max_value;
}
);