I am trying to use to insert into the table but got the exception that array index out of bounds ?
Please give me the idea how to do that and where is I am making mistake?
I have tried many conversion but doesn't get succeeded.
Following is the code
Object[]param={ID,name,Fathername,Address,Mob,Gender,Qualification};
try{
db=Display.getInstance().openOrCreate("students.db");
db.execute("insert into clStudent values('?','?','?',?,'?','?','?')", (Object[]) param) ;
You should drop the single quotes around the question marks in your query string.
Related
I am using PostgreSQL 9.5.14, and have a column in a table that contains JSON arrays that I need to parse for their contents.
Using a select I can see that the structure of the JSON is of this kind:
SELECT rule_results from table limit 5;
Result:
[{"rule_key":"applicant_not_lived_outside_eu"},{"rule_key":"family_assets_exceed_limit"},{"rule_key":"owned_a_deed"}]
[]
[]
[{"rule_key":"family_category","details":"apply_with_parents_under_25"}]
[]
I have been unable to create an SQL command to give me the values of the rule_key keys.
I've attempted to use the documentation for json-functions in postgresql to find a solution from
https://www.postgresql.org/docs/9.5/functions-json.html
SELECT rule_results::json->'rule_key' as results from table;
This gives me null values only.
SELECT jsonb_object_keys(rule_results::jsonb) from table;
This results in the error msg "cannot call jsonb_object_keys on a scalar", which seems to mean that the query is limited to a single row.
This looks simple enough, an array with key:value pairs, but somehow the answer eludes me. I would appreciate any help.
demo: db<>fiddle
Different solutions are possible. It depends on what you are expecting finally. But all solutions would use the function json_array_elements(). This expands every element into one row. With that you can do whatever you want.
This results in one row per value:
SELECT
value -> 'rule_key'
FROM
data,
json_array_elements(rule_results)
I am trying to insert data into a SqlServer table that has a generated key. I don't care about the new keys created, but the error I get back seems to suggest I must:
java.sql.SQLException: The statement must be executed before any results can be obtained.
DBUtils has a (thankfully) simple interface but doesn't seem to be able to overcome this.
Anyone have any ideas?
conn = this.dcf.getSqlServerDataSource(database).getConnection();
conn.setAutoCommit(false);
qRunner.insertBatch(conn, sql, new ArrayHandler(), parms);
There is another method in DBUtils:
qRunner.batch(conn, sql, parms);
This does not require a ResultSetHandler and does not seem to care about the created keys.
I use CakePhp for a little application. In this application I store some store procedures (I use mssql). Now I want to execute theses store procedures and want to use the result set.
If I call a store procedure without any parameters i get want I want without any problems. But when i call another store procedure with parameters i get the error "Invalid cursor state"). I did some research and i understood that there it seemed to be that i execute multiple select because of the result-state.
In CakePhp i call:
This is running without any problems
$res = $db->query("Exec storeProcedureWithoutParams");
Here I get the error with the cursor
$res = $db->query("Exec storeProcedureWithParams 'param1'");
The store procedures are very simple:
CREATE PROCEDURE [dbo].[storeProcedureWithoutParams]
AS
SELECT [u1]
,[u2]
,[u3]
,[u4]
,[u5]
,[u6]
FROM [testdb].[dbo].[test]
CREATE PROCEDURE [dbo].[storeProcedureWithParams]
#test nvarchar(50)
AS
SELECT [u1]
,[u2]
,[u3]
,[u4]
,[u5]
,[u6]
FROM [testdb].[dbo].[test]
where [u6] <> #test
If I execute the both queries directly at the database I get two return. The first one is the result of the select-statement and the second one is the result-set. If I understood it right, is this the problem because i get two results (thats why the cursor-error). BUT I don't know how to solve it and I don't know how to get only the result of the select-statement without the return-state?
Can anybody help me?
Thank you very much!
Greetz
V
Sorry for the late answer, but I'll add it here for testing purposes, as there aren't any full answers for this question.
Not sure 100%, but seems that when there is some kind of message output along the query results, it gives the "invalid cursor state". Adding SET NOCOUNT ON it solved to me.
What can I do so that EF becomes aware of the output clause in SPs and generates the result object accordingly?
INSERT INTO goodtable
(token,
ip, long_ip,
) OUTPUT INSERTED.*
VALUES
(#token,
#ip, #long_ip,
);
What I currently do to circumvent this is writing a dummy select, generate the objects and the comment out the dummy select leaving the output. This is not a good solution for a long term run.
Please do not suggest changing the SQL.
Have you tried. when importing the stored procedure into EF, using function import, to add the returns a collection of option.
I've never tried it, but can't see a reason for it not to work.
I needed to insert an array field into a database and I was pleased to notice that PostGreSQL had that functionality. But now I am not able to insert the data using the tables active record.
I have tried the below calls with no success
$active_record->array_column = $_array_of_values;
which gives me the exception
Exception Raised:CDbCommand failed to execute the SQL statement: SQLSTATE[22P02]: Invalid text representation: 7 ERROR: array value must start with "{" or dimension information
I have also tried this using
foreach($_array_of_values as $value){
$active_record->array_column[] = $value;
}
which tells me
Indirect modification of overloaded property FeatureRaw::$colors_names has no effect
Can anyone help me with this?
Thanks!
Data must be inserted in the form (text representation of an ARRAY):
INSERT INTO tbl (arr_col) VALUES ('{23,45}')
Or:
INSERT INTO tbl (arr_col) VALUES ('{foo,"bar, with comma"}')
So you need to enclose your array values in '{}' and separate them with comma ,. Use double quotes "" around text values that include a comma.
I listed more syntax variants to insert arrays in a related answer.
For those who also have same problem:
I didn't check the Yii1 behavior, but in Yii2 you simply can insert array as properly formed string as Erwin Brandstetter mentioned in his comment:
$activeRecord->arrayField = '{' . implode(',',$array_values) . '}';
Of course you need to make additional efforts when your $array_values has strings with commas, etc. And you still need to convert value back to array after you load ActiveRecord.
You can make these conversions in ActiveRecord's beforeSave() and afterLoad() and you will not need to convert values manually.
UPD. Recently I made a simple behavior for Yii2 to use array fields with ActiveRecord without manual field building: kossmoss/yii2-postgresql-array-field. It is more generalized way to solve the problem and I hope it will help. For those who use Yii1: you can investigate the package code and create your own solutuion compatible with your framework.