How would I save the following in a postgis geometry field?
How would the WKT look like for the arc or fan.
Is there a ARC well known text to save this?
one could define a custom "constructor" for a sector defined in terms of three points p1,p2,p3 as follows (p1 defines the center):
CREATE OR REPLACE FUNCTION ST_FormatPoint(p GEOMETRY)
RETURNS text AS
$$
BEGIN
RETURN ST_X(p) || ' ' || ST_Y(p);
END;
$$
LANGUAGE 'plpgsql';
CREATE OR REPLACE FUNCTION ST_Sector(p1 GEOMETRY, p2 GEOMETRY, p3 GEOMETRY)
RETURNS GEOMETRY AS
$$
DECLARE
phi double precision;
p4 geometry;
BEGIN
phi := (ST_Azimuth(p1, p3) - ST_Azimuth(p1, p2))/2;
p4 := ST_Rotate(p2, -phi, p1);
RETURN ST_GeomFromText(
'CURVEPOLYGON(CIRCULARSTRING(' ||
ST_FormatPoint(p1) || ', ' || ST_FormatPoint(p1) || ', ' ||
ST_FormatPoint(p2) || ', ' || ST_FormatPoint(p4) || ', ' || ST_FormatPoint(p3) || ', ' ||
ST_FormatPoint(p1) || ', ' || ST_FormatPoint(p1)
|| '))');
END;
$$
LANGUAGE 'plpgsql';
Then, a query
WITH s as (
select
ST_Sector(ST_Point(0,0), ST_Point(1,0), ST_Point(0, 1)) as poly
)
select st_perimeter(poly), st_area(poly) from s;
yields the expected result
st_perimeter | st_area
-----------------+-------------------
3.5707963267949 | 0.785082789238688
(1 row)
Related
I want to form a SQL construct using a stored procedure which would have email_id passed as a variable i.e., "v_created_by" as one of the input parameter.
My code skeleton looks like :
create or replace procedure testing_proc(type varchar, ..., ..., ..., v_created_by varchar)
returns varchar not null
....,
....,
begin
wh_setup := 'CREATE OR REPLACE WAREHOUSE' || ' ' || wh_name || ' ' || 'WITH' || ' '
|| 'WAREHOUSE_SIZE = ' || v_wh_size || ' '
...
...
|| 'SCALING_POLICY= ' || 'STANDARD' || ' '
|| 'COMMENT=' || v_created_by;
execute immediate wh_setup;
return 'successfully created the warehouse :' || ' ' || wh_name;
end;
Whenever I am calling the proc like :
call testing_proc('STD','EDWQA','ANALYST','XSMALL','1','1',300,'somen.swain#GMAIL.COM')
I get the error as :
"Uncaught exception of type 'STATEMENT_ERROR' on line 15 at position 2 :
SQL compilation error: syntax error line 1 at position 199 unexpected '#GMAIL.COM'.
syntax error line 1 at position 199 unexpected '#GMAIL.COM'.
Reference SQL which I am trying to create via procedure is given below:
CREATE WAREHOUSE IF NOT EXISTS dbt_workload
WITH WAREHOUSE_SIZE = 'XSMALL'
WAREHOUSE_TYPE = 'STANDARD'
SCALING_POLICY = 'STANDARD'
COMMENT = '"created for testing"';
Please see the COMMENT keyword over here where it can be used as a tag.
Any pointers on how to address this to ensure I can use this email_id and pass it with comment section would really help.
The comment has to be wrapped with ' as it requires string literal:
COMMENT = '<string_literal>'
Instead:
|| 'COMMENT=' || v_created_by;
to:
|| 'COMMENT=''' || v_created_by || ''';
The input should be validated/trusted before passing it to be run.
CREATE OR REPLACE FUNCTION f_old_transactions (IN p_fromdate date, IN p_todate date, IN p_transtype varchar,IN OUT p_cancelled boolean,
OUT p_transaction_date date,
OUT p_type varchar,
OUT p_description varchar,
OUT p_amount numeric)
RETURNS SETOF record AS
$BODY$
declare lRunQuery text;
declare lTotalRec record;
declare lBranchList text[];
declare lTranstype text[];
BEGIN
select into lTranstype
dt.type
from
v_data_types dt;
lTranstype := regexp_split_to_array(p_transtype, ',');
lrunquery := 'select
it.transaction_date trandate,
dt.type,
it.description,
ita.amount,
it.cancelled
from
import_transaction it
inner join import_transaction_account ita on it.import_transaction_id=ita.import_transaction_id
where
it.transaction_date >= ' || quote_literal(p_fromdate) || '
and it.transaction_date <= ' || quote_literal(p_todate) || '
and dt.type = any(' || quote_literall(p_transtype) || ') and';
if (p_cancelled = TRUE) then
lrunquery := lrunquery || '
it.cancelled = ' || quote_literal(p_cancelled) || '';
else
lrunquery := lrunquery || '
it.cancelled = ' || quote_literal(p_cancelled) || '';
end if;
FOR lTotalrec in
execute lRunQuery
LOOP
p_transaction_date := ltotalrec.trandate;
p_type :=ltotalrec.type;
p_description :=ltotalrec.description;
p_amount :=ltotalrec.amount;
p_cancelled := ltotalrec.cancelled;
return next;
END LOOP;
return ;
end;
$BODY$
LANGUAGE plpgsql IMMUTABLE
COST 100
ROWS 1000;
ALTER FUNCTION f_old_transactions(date,date,varchar,boolean) OWNER TO "CompuLoanPostgres";
select * from f_old_transactions ('01-Jan-2010','31-Dec-2018','Receipt Cash','FALSE')
I'm getting an error that my array value must start with "{". My array I'm trying to create is from a view v_data_type the view consist of only one column with a varchar type.
Can anyone please direct me where the issue in my code is?
Thank you in advance
I don't think you've given us enough information to know for certain what's going wrong. Notably, I have no idea what the tables should look like, either in schema or content. Without that, I can't build a test case in my own DB to debug.
That said, I noticed a couple things, specifically around the lTranstype variable:
You're assigning lTranstype twice. First you SELECT INTO it, and then you immediately assign it to a value unpacked from the p_transtype argument. It's not clear to me what you want in that variable.
When constructing your query later, you include and dt.type = any(' || quote_literall(p_transtype) || '). The problem is that p_transtype is a varchar argument, and you're trying to access it like an array. I suspect you want that to read and dt.type = any(' || quote_literall(lTranstype) || '), but I could be mistaken.
I'm guessing that your type error is coming from that second problem, but it seems like you need to reassess what the different variables in this function are intended for. Good luck.
Here is the section of code, I am using ' ' blah ' ' to escape single quotes but I guess its not working:
declare
my_func varchar2(20) :='test_func';
begin
execute immediate 'insert into TABLE_TEST (OUTPUT) select ' || my_func || ' from dual where TABLE_TEST.FUNCTION_NAME like ' 'VALIDATION1_%' ' ';
end;
I am getting the following error:
PLS-00103: Encountered the symbol "VALIDATION1_%" when expecting one of the following:
& = - + ; < / > at in is mod remainder not rem return
returning <an exponent (**)> <> or != or ~= >= <= <> and or
like like2 like4 likec between into using || bulk member
submultiset
The symbol "* was inserted before "VALIDATION1_%" to continue.
It looks like you are trying to escape the single quote with another single quote (which is good), but there is an extra space in between the two. That has to go.
Change
' from dual where TABLE_TEST.FUNCTION_NAME like ' 'VALIDATION1_%' ' '
to
' from dual where TABLE_TEST.FUNCTION_NAME like ''VALIDATION1_%'' '
In cases like this it's much simpler to use the new q syntax for literal strings, e.g.:
execute immediate 'insert into TABLE_TEST (OUTPUT) select ' || my_func ||
q[' from dual where TABLE_TEST.FUNCTION_NAME like 'VALIDATION1_%' ]';
A client wants to store anything in seperate tables. (Long story, it's nescessary).
To do this, i've build an Postgres function to create new tables on the fly in it's own namespace.
These tables can have 2, 4, or 100 columns, just what the user wants.
No problem, this works. The used datatypes in these dynamic tables are native, e.g. text, booleans, integers, etcetera.
Now comes the problem, i've got to insert data into these tables. The point is, the users can not access the tables directly, they'll do this through a function.
For a couple of datatypes is this not a problem, but for the text datatypes it's problematic.
Here is the function till now:
-- Function: add(integer, text[])
-- DROP FUNCTION add(integer, text[]);
CREATE OR REPLACE FUNCTION add(id integer, fields text[])
RETURNS integer AS
$BODY$
DECLARE
l_line_ending text := ')';
l_fieldtype integer;
l_ito_table_name text;
l_ito_fieldnames text;
l_field ito_fields%rowtype;
l_first_loop boolean := true;
l_values_to_insert text := 'VALUES (';
l_loop_counter integer := 0;
l_query text;
BEGIN
select into l_ito_table_name ito_table_name from ito where id = target_ito_id;
l_ito_fieldnames := 'insert into ' || l_ito_table_name || '(';
FOR l_field IN SELECT * FROM ito_fields
WHERE ito_fields.ito_id = target_ito_id
order by ito_fields.id asc
LOOP
l_loop_counter := l_loop_counter +1;
l_fieldtype := l_field.fieldtype;
if not l_first_loop THEN
l_values_to_insert := (l_values_to_insert || ', ');
end if;
if l_field.fieldtype = 1 THEN
l_values_to_insert := (l_values_to_insert || '''' || (fields[l_loop_counter]) || '''' );
elsif l_field.fieldtype = 2 THEN
l_values_to_insert := quote_literal(l_values_to_insert || private.cast_to_integer(fields[l_loop_counter]));
elsif l_field.fieldtype = 3 THEN
l_values_to_insert := quote_literal(l_values_to_insert || private.cast_to_boolean(fields[l_loop_counter]));
elsif l_field.fieldtype = 4 THEN
l_values_to_insert := quote_literal(l_values_to_insert || private.cast_to_float(fields[l_loop_counter]));
else
return 103;
end if;
if l_first_loop then
l_ito_fieldnames := l_ito_fieldnames || l_field.column_name;
l_first_loop := false;
else
l_ito_fieldnames := l_ito_fieldnames || ', ' || l_field.column_name;
end if;
END LOOP;
l_ito_fieldnames := l_ito_fieldnames || l_line_ending;
l_values_to_insert := ((l_values_to_insert) || (l_line_ending));
l_query := (l_ito_fieldnames || l_values_to_insert);
EXECUTE l_query;
return 0;
END;
$BODY$
LANGUAGE plpgsql VOLATILE
COST 100;
ALTER FUNCTION add(integer, text[])
OWNER TO postgres;
The table ito_fields stores all the field metadata, so the datatype, versions, descriptions are stored here.
the ito table stores all the dynamic table data.
The point in this function are the quotes. The insert function is created dynamicly, therefore i've got to add some quotes around the text fields in the insert function.
Postgres is giving errors as soon as i do that. Even with the quote_literal functions it's still a problem, because of the string concatenation (i know, security risks, but that's no problem for now).
I've tried to use quote_literal, quote_ident, even replacing the quotes (') with a replacement, until the execute function (replace(query, l_quote_rep, '''').. I really don't have a clue now how to fix this...
Thanks in advance.
Arrays, aggregates, quote_ident and quote_nullable are your friends.
This should work, and code is shorter:
CREATE OR REPLACE FUNCTION add(id integer, fields text[])
RETURNS integer AS
$BODY$
DECLARE
l_ito_table_name text;
l_query text;
l_fields text;
r_values text;
BEGIN
--get table name
SELECT INTO l_ito_table_name quote_ident(ito_table_name) FROM ito WHERE id = target_ito_id;
-- get column names
SELECT INTO l_fields
array_to_string( array_agg(quote_ident(column_name)), ',' )
FROM ito_fields
WHERE ito_fields.ito_id = target_ito_id
order by ito_fields.id asc;
-- prepare values
SELECT INTO r_values
array_to_string( array_agg(quote_nullable(u.name)), ',' )
FROM unnest(fields) u(name);
l_query := 'insert into ' || l_ito_table_name || '(' || l_fields || ') values (' || r_values || ')';
EXECUTE l_query;
return 0; -- why 0?
END;
$BODY$;
I have a plpgsql function that executes a query, but when i put an array into it it wont parse it, at least it gives me this error:
[FAIL] syntax error at or near "{"
LINE 21: AND c.category_uuid != ANY({"c0857e20-111e-11e0-ac64-0800...
CONTEXT: PL/pgSQL function "get_membercategories" line 22 at FOR over EXECUTE statement
This is the complete line:
AND c.category_uuid != ANY({"c0857e20-111e-11e0-ac64-0800200c9a66"})
This is how my function looks
CREATE OR REPLACE FUNCTION get_membercategories(in_company_uuid uuid, in_parent_uuid uuid, in_start integer, in_limit integer, in_sortby character varying, in_order character varying, in_querystring character varying, IN in_excludestring UUID[], OUT out_status integer, OUT out_status_description character varying, OUT out_value character varying[]) RETURNS record
LANGUAGE plpgsql
AS $$
DECLARE
temp_record RECORD;
altered_parent_uuid UUID;
temp_out_value VARCHAR[];
temp_iterator INTEGER := 0;
temp_parent_uuidstring VARCHAR;
temp_excludestring VARCHAR := '';
BEGIN
IF in_parent_uuid IS NOT NULL THEN
temp_parent_uuidstring := 'AND c.parent_uuid = ''' || in_parent_uuid || '''';
ELSE
temp_parent_uuidstring := 'AND c.parent_uuid IS NULL';
END IF;
IF in_excludestring IS NOT NULL THEN
temp_excludestring := 'AND c.category_uuid != ANY(' || in_excludestring || ')';
END IF;
FOR temp_record IN EXECUTE '
SELECT
c.name,
c.category_uuid,
mc.password,
(
SELECT COUNT(*)
FROM
targetgroupusers tgu
WHERE
tgu.targetgroup_uuid = mc.targetgroup_uuid
) AS receivers
FROM
membercategories AS mc
LEFT JOIN
categories AS c
ON
mc.category_uuid = c.category_uuid
WHERE
c.isdeleted IS NULL
' || temp_excludestring || '
AND
mc.company_uuid = ''' || in_company_uuid || '''
' || in_querystring || '
' || temp_parent_uuidstring || '
ORDER BY
' || in_sortby || ' ' || in_order || '
OFFSET
' || in_start || '
LIMIT
' || in_limit
LOOP
temp_out_value[temp_iterator] = ARRAY[temp_record.category_uuid::VARCHAR(36), temp_record.name::CHARACTER VARYING, temp_record.receivers::CHARACTER VARYING, CASE WHEN temp_record.password IS NOT NULL THEN '1' ELSE '0' END];
temp_iterator = temp_iterator+1;
END LOOP;
out_status := 0;
out_status_description := 'Member categories successfully retrieved';
out_value := temp_out_value;
RETURN;
END$$;
I am clueless at this point, any help is very much appreciated!
Your problem is that the the array gets expanded to an invalid string (as you can see in the error message). The string representation of an array needs to be enclosed into single quotes again and then casted to the approriate array type:
The following should work:
IF in_excludestring IS NOT NULL THEN
temp_excludestring := 'AND c.category_uuid != ANY(''' || in_excludestring::varchar||'''::UUID[])';
END IF;
Note that in_excludestring is explicitely cast to a varchar to force the string representation of an array, enclosed in single quotes to satisfy the "array literal" syntax and then cast back to an UUID array.
The resulting string will look something like this:
category_uuid != ANY ( '{c0857e20-111e-11e0-ac64-0800200c9a66,7fffda0c-11c9-11e0-967c-a300aec7eb54}'::UUID[] )