I'm trying to implement a routine for replacing some invalid characters in a BW transformation. But I keep getting a syntax error. This is my current code:
METHOD S0001_G01_R40 BY DATABASE PROCEDURE FOR HDB LANGUAGE SQLSCRIPT
OPTIONS READ-ONLY.
-- target field: 0POSTXT
-- Note the _M class are not considered for DTP execution.
-- AMDP Breakpoints must be set in the _A class instead.
outTab = SELECT REPLACE_REGEXPR('([^[:print:]|^[\x{00C0}-\x{017F}]|[#])'
IN "SGTXT" WITH '' OCCURRENCE ALL ) AS "/BI0/OIPOSTXT"
FROM :inTab;
errorTab = SELECT '' AS ERROR_TEXT,
'' AS SQL__PROCEDURE__SOURCE__RECORD FROM DUMMY
WHERE DUMMY <> 'X';
ENDMETHOD.
I keep getting the following error:
SQLSCRIPT message: return type mismatch: Procedure
/BIC/QCW72C4IJDC8JAFRICAU_M=>S0001_G01_R40: OUTTAB[ /BI0/OIPOSTXT:NVARCHAR(5000) ]
!= expected result [ POSTXT:NVARCHAR(60) RECORD:NVARCHAR(56)
SQL__PROCEDURE__SOURCE__RECORD:NVARCHAR(56) ]
Can anyone give me an idea of what I'm doing wrong here?
For those wondering how to correct this problem, here is the solution.
Everything is in the error message:
OUTTAB[ /BI0/OIPOSTXT:NVARCHAR(5000) ]
!= expected result [ POSTXT:NVARCHAR(60) RECORD:NVARCHAR(56)
SQL__PROCEDURE__SOURCE__RECORD:NVARCHAR(56) ]
It means the result table OutTab contains only one field (/BI0/OIPOSTXT) and so is different by the OutTab expected which should contain 3 fields POSTXT, RECORD and SQL__PROCEDURE__SOURCE__RECORD.
The expected structure can usually be seen on top of the public section:
types:
begin of TN_S_IN_S0001_G01_R1_1,
POSTXT type C length 60,
RECORD type C length 56,
SQL__PROCEDURE__SOURCE__RECORD type C length 56,
end of TN_S_IN_S0001_G01_R1_1 .
So the correct syntax would be:
outTab =
SELECT CAST(REPLACE_REGEXPR('([^[:print:]|^[\x{00C0}-\x{017F}]|[#])' IN "SGTXT" WITH '' OCCURRENCE ALL) AS NVARCHAR(60)) AS "POSTXT"
,"RECORD" AS "RECORD"
,SQL__PROCEDURE__SOURCE__RECORD AS "SQL__PROCEDURE__SOURCE__RECORD"
FROM :inTab;
Regards,
Jean-Guillaume
You might want to enclose the regex expression in a CAST( ... AS NVARCHAR(60)) to ensure that the resulting record structure matches the expected return type.
Related
I need to find out the schema of a given JSON file, I see sql has schema_of_json function
and something like this works flawlessly
> SELECT schema_of_json('[{"col":0}]');
ARRAY<STRUCT<`col`: BIGINT>>
But if I query for my table name, it gives me the following error
>SELECT schema_of_json(Transaction) as json_data from table_name;
Error in SQL statement: AnalysisException: cannot resolve 'schemaofjson(`Transaction`)' due to data type mismatch: The input json should be a string literal and not null; however, got `Transaction`.; line 1 pos 7;
The Transaction is one of the columns in my table and after checking it manually I can attest that it is of String type(json).
The SQL statement has it to give me the schema of the JSON, how to do it?
after looking further into the documentation that it is clear that the word foldable means that of the static one, and a column from a table JSON won't work
for minimal reroducible example here you go:
SELECT schema_of_json(CAST('{ "a": "b" }' AS STRING))
As soon as the cast is introduced in the above statement, the schema_of_json will fail......... It needs a static JSON as it's input
I create two functions that worked well as a stand alone functions.
But when I try to run one of them inside the second one I got an error:
'SQL compilation error: Unsupported subquery type cannot be evaluated'
Can you advise?
Adding code bellow:
CASE
WHEN (regexp_substr(ARGUMENTS_JSON,'drives_removed":\\[]') = 'drives_removed":[]') THEN **priceperitem(1998, returnitem_add_item(ARGUMENTS_JSON))**
WHEN (regexp_substr(ARGUMENTS_JSON,'drives_added":\\[\\]') = 'drives_added":[]') THEN 1
WHEN (regexp_substr(ARGUMENTS_JSON,'from_flavor') = 'from_flavor') THEN 1
WHEN (regexp_substr(ARGUMENTS_JSON,'{}') = '{}') THEN 1
ELSE 'Other'
END as Price_List,
The problem happened when with function 'priceperitem'
If I replace returnitem_add_item with a string then it will work fine.
Function 1 : priceperitem get customer number and a item return pricing per the item from customer pricing list
Function 2 : returnitem_add_item parsing string and return a string
As an alternative, you may try processing udf within a udf in the following way :
create function x()
returns integer
as
$$
select 1+2
$$
;
set q=x();
create function pi_udf(q integer)
returns integer
as
$$
select q*3
$$
;
select pi_udf($q);
If this does not work out as well, the issue might be data specific. Try executing the function with one record, and then add more records to see the difference in the behavior. There are certain limitations on using SQL UDF's in Snowflake and hence the 'Unsupported Subquery' Error.
I'm trying to use the class /ui5/cl_json_parser for parsing a JSON string.
The following code snippet reproduces the problem:
REPORT ztest_json_parse.
DATA: input TYPE string,
output TYPE string,
json_parser TYPE REF TO /ui5/cl_json_parser.
input = '{"address":[{"street":"Road","number":"545"},{"street":"Avenue","number":"15"}]}'.
CREATE OBJECT json_parser.
json_parser->parse( input ).
json_parser->print( ).
output = json_parser->value( path = '/address/1/street' ).
WRITE output.
The print method shows the correct parsed JSON string, but the output variable is always empty.
I have traced the code down to the method VALUE of the class /UI5/CL_JSON_PARSER, at line 15, which contains:
read table m_entries into l_entry with table key parent = l_parent name = l_name.
In the debugger, I can see that l_parent = '/address/1' and l_name = 'street', and that the internal table m_entries contains a record with parent = '/address/1' and name = 'street'. Nevertheless the READ statement always returns sy-subrc = 4 and does not find anything.
Can anyone help?
First: Do not use /ui5/cl_json_parser class, it is intended for internal use ONLY and has no reliable documentation
Secondly, here is the sample how you can fetch street value from the first element of your JSON:
DATA(o_json) = cl_abap_codepage=>convert_to( '{"address":[{"street":"Road","number":"545"},{"street":"Avenue","number":"15"}]' ).
DATA(o_reader) = cl_sxml_string_reader=>create( o_json ).
TRY.
DATA(o_node) = o_reader->read_next_node( ).
WHILE o_node IS BOUND.
DATA(op) = CAST if_sxml_open_element( o_node ).
LOOP AT op->get_attributes( ) ASSIGNING FIELD-SYMBOL(<a>).
DATA(attr) = <a>->get_value( ).
ENDLOOP.
IF attr <> 'street'.
o_node = o_reader->read_next_node( ).
ELSE.
DATA(val) = CAST if_sxml_value_node( o_reader->read_next_node( ) ).
WRITE: '/address/1/street =>', val->get_value( ).
EXIT.
ENDIF.
ENDWHILE.
CATCH cx_root INTO DATA(e_txt).
ENDTRY.
As far as I know, there is no class in ABAP that allows fetching single JSON attributes like XPath.
Certainly agree with Suncatcher on avoid UI5 Json parser.
If you dont control/know the structure of the source data, Suncatchers answer is good.
However,
if you know the basic structure of the source JSON and you must, if you plan to access the first address row, fieldname street .
AND you can have the source provided using uppercase variable names then you can use the so called identity transformation.
types: begin of ty_addr,
street type string,
number type string,
end of ty_addr.
types ty_addr_t type STANDARD TABLE OF ty_addr.
DATA: input TYPE string,
ls_addr TYPE ty_addr,
lt_addr type ty_addr_t.
input = '{"ADDRESS":[{"STREET":"Road","NUMBER":"545"},{"STREET":"Avenue","NUMBER":"15"}]}'.
CALL TRANSFORMATION id SOURCE XML input
RESULT address = lt_addr.
read table lt_addr index 1 into ls_addr.
WRITE ls_addr-street.
I am trying to create my first procedure on firebird 2.5 by using ibexpert gui.
The procedure will return 'PROCESS_DATE' which belongs to a specific 'PROCESS_ID'. I prepared following code:
begin
OUTPUT_DATE = (select PROCESS_DATE from PROCESSES
where PROCESS_ID = INPUT_ID);
suspend;
end
input parameter : 'INPUT_ID' --> type 'INTEGER'
output parameter : 'OUTPUT_DATE' --> type 'DATE'
But when I tried to compile it returns this error:
Column does not belong to referenced table.
Dynamic SQL Error.
SQL error code = -206.
Column unknown.
INPUT_ID.
At line 9, column 48.
I do not know how to deal with this error.
I tried to find solutions on other questions also the internet but i couldn't find a basic, understandable answer for beginners. thanks for helps.
Try this:
CREATE PROCEDURE MyP (INPUT_ID INTEGER)
RETURNS (OUTPUT_DATE DATE)
AS
BEGIN
FOR
SELECT PROCESS_DATE FROM PROCESSES
WHERE PROCESS_ID = :INPUT_ID
INTO :OUTPUT_DATE
DO
SUSPEND;
END
Always prepend parameter names with ":". The only place where ":" is not allowed is at the left side of "=" operator.
I'm using mksqlite to create and access an SQL database from matlab, and I want to get the number of rows in a table. I've tried this:
num = mksqlite('SELECT COUNT(*) FROM myTable');
, but the returned value isn't very helpful. If I put a breakpoint in my script and examine the variable, I find that it's a struct with a single field, called 'COUNT(_)', which seems to actually be an invalid name for a field, so I can't access it:
K>> class(num)
ans =
struct
K>> num
num =
COUNT(_): 0
K>> num.COUNT(_)
??? num.COUNT(_)
|
Error: The input character is not valid in MATLAB statements or expressions.
K>> num.COUNT()
??? Reference to non-existent field 'COUNT'.
K>> num.COUNT
??? Reference to non-existent field 'COUNT'.
Even the MATLAB IDE can't access it. If I try to double click the field in the variable editor, this gets spat out:
??? openvar('num.COUNT(_)', num.COUNT(_));
|
Error: The input character is not valid in MATLAB statements or expressions.
So how can I access this field?
You are correct that the problem is that mksqlite somehow manages to create an invalid field name that can't be read. The simplest solution is to add an AS clause to your SQL so that the field has a sensible name:
>> num = mksqlite('SELECT COUNT(*) AS cnt FROM myTable')
num =
cnt: 0
Then to remove the extra layer of indirection you can do:
>> num = num.cnt;
>> num
num =
0