calling stored procedure with name parameters - database

I'm trying to call stored procedure with name parameters from java and having an issues
Class.forName("com.ibm.db2.jcc.DB2Driver");
String connectionFormat = "jdbc:db2://TEST.NET:5224/D1278";
Connection conn = DriverManager.getConnection(connectionFormat, User.USERNAME, User.PASSWORD);
CallableStatement statement = conn.prepareCall("CALL SAMPLE.ESPA(PLAN=>?,LIB=>?,PARMS=>?)");
statement.setString("PLAN", "TEST1");
statement.setString("LIB", "'FTM.STORED.PROC'");
statement.setString("PARMS", "010000");
I'm getting
com.ibm.db2.jcc.am.SqlException: [jcc][10453][12710][4.28.11] Cannot get the describe information for the calling stored procedure with name ESPA and path ' SYSIBM , SYSFUN , SYSPROC , SYSIBMADM ,
USER1' ERRORCODE=-4472, SQLSTATE=null
at com.ibm.db2.jcc.am.b7.a(b7.java:794)
at com.ibm.db2.jcc.am.b7.a(b7.java:66)
at com.ibm.db2.jcc.am.b7.a(b7.java:107)
at com.ibm.db2.jcc.am.CallableStatement.b0(CallableStatement.java:2291)
at com.ibm.db2.jcc.am.CallableStatement.w(CallableStatement.java:2193)
at com.ibm.db2.jcc.am.CallableStatement.setString(CallableStatement.java:1405)
at com.ca.mat.agent.storedproc.ExecuteProcedure.<init>(ExecuteProcedure.java:56)
at com.ca.mat.agent.storedproc.ExecuteProcedure.main(ExecuteProcedure.java:89)

Related

Use of Variable in Snowflake Stored Procedure

I have to add a variable MaxDate in my SQL Stored Proc (shown below). The code gets errored out since MaxDate is not represented by its value. Any idea on how I can pass a variable in a stored proc?
create or replace procedure Load_Employee()
returns varchar not null
language javascript
EXECUTE AS CALLER
as
$$
//Variable Initialization
var IntegrationTable ='EMPLOYEE';
var TypeID=0;
var MaxDate=' ';
var cmd = "Select max(COMPLETED_DATE) from SCHEMA.TABLE where TARGET_TABLE_NAME= " + "'" + IntegrationTable + "'" ;
var sql = snowflake.createStatement({sqlText: cmd});
var result = sql.execute();
result.next();
MaxDate=result.getColumnValue(1);
var cmd=` Insert into PersonTable
select SHA1(concat(Person_id,'|','Person')) ,12345678,SHA1(concat('Payroll','|','Pay','|', Load_Date)) ,current_timestamp() , Tenant
from Schema.PERSONTABLE where Date_Added >= MaxDate
where TYPE='ABC' ;`;
$$
;
If your query to get MaxDate works right, then the value should be in the variable. The problem is it's not being replaced in the sql variable defining the insert statement.
Since you're using backticks to open and close the string, you can use a special JavaScript notation to replace the variable with its value, ${MaxDate}.
Your definition of the insert statement would look like this:
var cmd=` Insert into PersonTable
select SHA1(concat(Person_id,'|','Person')) ,12345678,SHA1(concat('Payroll','|','Pay','|', Load_Date)) ,current_timestamp() , Tenant
from Schema.PERSONTABLE where Date_Added >= ${MaxDate}
where TYPE='ABC' ;`;
If that doesn't work, try cutting the SP short with return MaxDate; to see what got assigned to that variable. Also it's very helpful to check the query history view to see what SQL actually ran inside a stored procedure.
Also, I think this is the same SP that was having an issue with a null return. You'll need to return a string value using something like return 'Success'; or something to avoid getting an error for the null return. That's because of the returns varchar not null in the definition.

Query `list stage` in Snowflake UDF

I am trying to write a Snowflake UDF that accepts a stage name and specific folder name as input parameters and returns the latest file id ( striping from full file name) as the output. Could anyone help me with a simple code to achieve this?
I'm not sure if you want a UDF or stored procedure. The syntax to create would be similar so I think this can help. Here is a stored procedure which will fetch latest staged file from a given stage and path. Just be aware of the limit 1 in query, multiple staged files may share the same last modified date while this procedure returns a scalar (single) value.
Stored Procedure Definition
create or replace procedure "MYDB"."MYSCHEMA"."LATEST_STAGED_FILE"(stage_name text, folder text)
returns string not null
language javascript
execute as caller
as
$$
var sql_text = "list #" + STAGE_NAME + "/" + FOLDER ;
var sql_command0 = snowflake.createStatement({ sqlText: sql_text});
var sql_command1 = snowflake.createStatement({ sqlText:`SELECT "name" FROM table(result_scan(last_query_id())) WHERE "last_modified" = (select MAX("last_modified") from table(result_scan(last_query_id()))) LIMIT 1;`});
try {
sql_command0.execute();
var resultSet = sql_command1.execute();
while(resultSet.next())
{
var resultFile = resultSet.getColumnValue('name').split("/")
return resultFile[resultFile.length - 1]
}
}
catch (err) {
return "Failed: " + err;
}
$$;
You can then call the stored procedure like
call "MYDB"."MYSCHEMA"."LATEST_STAGED_FILE"('MYDB.MYSCHEMA.MYSTAGE', 'mypath/myotherpath');
References
select from list #
list stage via SP

Execution error in stored procedure in Snowflake

I compiled a stored procedure but I'm unable to execute it - getting this error:
Execution error in stored procedure SAMPLE_ETL_MONITORING_PROC: Stored procedure execution error: Requested information on the current user is not accessible in stored procedure. At Statement.execute, line 18 position 45
I have write access to the database but not sure If I have to include any commands/statements in the script. Can anyone please suggest what needs to be done?
Here is the script:
CREATE OR REPLACE PROCEDURE sample_etl_monitoring_proc()
returns string not null
language javascript
as
$$
var insert_cmd = `
truncate table OOBE.monitoring.load_history_1
`
var sql_insert = snowflake.createStatement({sqlText: insert_cmd});
var insert_result = sql_insert.execute();
var stream_select_cmd = `
insert into OOBE.monitoring.load_history_1
select * from (
select * from OOBE.information_schema.load_history
union
select * from snowplow.information_schema.load_history);
`
var sql_select_stream = snowflake.createStatement({sqlText: stream_select_cmd});
var select_stream_result = sql_select_stream.execute();
return '👍';
$$;
I reproduced the error and got this to work by adding an explicit caller's right declaration:
CREATE OR REPLACE PROCEDURE sample_etl_monitoring_proc()
returns string not null
language javascript
execute as caller
as

Having an Issue with too many parameters being passed to stored procedures in ColdFusion 2016

I have several stored procedures in an application that were functioning perfectly (for years) until our recent upgrade from ColdFusion 2010 to ColdFusion 2016. Now, I am getting error messages of either too many parameters or a certain parameter is not a parameter is not contained in the procedure that is being called.
I have opted to upload some code so people can better understand what is actually happening. Still learning how to format code here so please forgive me if it is still lacking.
In both cases I have double checked the parameter lists in the stored procedure in the procedure calls and have found that they are all indeed correct. In fact, nothing has changed in this code for over 5 years. This behavior has only begun since the upgrade has taken place.
Below is the first example. I will list the procedure call (in cfscript)
first then the parameter list from the stored procedure and then the error message it produced:
public query function readStorage(numeric group1=0,numeric group2=0) {
local.group1Value = arguments.group1?arguments.group1:"";
local.group2Value = arguments.group2?arguments.group2:"";
spService = new storedproc();
spService.setDatasource(variables.dsn);
spService.setUsername(variables.userName);
spService.setPassword(variables.password);
spService.setProcedure("usp_readCompatibilityStorage");
spService.addParam(dbvarname="#group1Id",cfsqltype="cf_sql_integer"
, type="in",value=local.group1Value,null=!arguments.group1);
spService.addParam(dbvarname="#group2Id",cfsqltype="cf_sql_integer"
,type="in",value=local.group2Value,null=!arguments.group2);
spService.addProcResult(name="rs1",resultset=1);
local.result = spService.execute();
return local.result.getProcResultSets().rs1;
}
Below is the parameter list from the stored procedure:
#groupId1 int = NULL
,#groupId2 int = NULL
Below is the error message I get:
[Macromedia][SQLServer JDBC Driver][SQLServer]#group1Id is not a
parameter for procedure usp_readCompatibilityStorage.
Second Example:
public query function read(string cribIdList="",
numeric cribNumber=0,
string isAnnex="",
numeric siteId=0,
string parentCribIdList="",
numeric supervisorId=0,
numeric statusId=0,
string orderBy="cribNumber ASC") {
local.cribNumberValue = arguments.cribNumber?arguments.cribNumber:"";
local.siteIdValue = arguments.siteId?arguments.siteId:"";
local.superIdValue = arguments.supervisorId ? arguments.supervisorId:"";
local.statusIdValue = arguments.statusId ? arguments.statusId:"";
spService = new storedproc();
spService.setDatasource(variables.dsn);
spService.setUsername(variables.userName);
spService.setPassword(variables.password);
spService.setProcedure("usp_readCrib");
spService.addParam(dbvarname="#cribIdList",cfsqltype="cf_sql_varchar"
,type="in",value=arguments.cribIdList
,null=!len(arguments.cribIdList));
spService.addParam(dbvarname="#cribNumber",cfsqltype="cf_sql_integer"
,type="in",value=local.cribNumberValue
,null=!arguments.cribNumber);
spService.addParam(dbvarname="#isAnnex",cfsqltype="cf_sql_varchar"
,type="in",value=arguments.isAnnex,null=!len(arguments.isAnnex));
spService.addParam(dbvarname="#siteId",cfsqltype="cf_sql_integer"
,type="in",value=local.siteIdValue,null=!arguments.siteId);
spService.addParam(dbvarname="#parentCribIdList"
, cfsqltype="cf_sql_varchar", type="in"
, value=arguments.parentCribIdList
, null=!len(arguments.parentCribIdList));
spService.addParam(dbvarname="#supervisorId",
cfsqltype="cf_sql_integer", type="in",value=local.superIdValue
, null=!arguments.supervisorId);
spService.addParam(dbvarname="#statusId"
, cfsqltype="cf_sql_integer", type="in"
, value=local.statusIdValue, null=!arguments.statusId);
spService.addParam(dbvarname="#orderBy",cfsqltype="cf_sql_varchar"
, type="in",value=arguments.orderBy);
spService.addProcResult(name="rs1",resultset=1);
local.result = spService.execute();
return local.result.getProcResultSets().rs1;
}
Below is the parameter list from the stored procedure:
#cribIdList varchar(500) = NULL
,#cribNumber int = NULL
,#isAnnex varchar(3) = NULL
,#siteId int = NULL
,#parentCribIdList varchar(500) = NULL
,#supervisorId int = NULL
,#statusId int = NULL
,#orderBy varchar(50)
Below is the message returned from the server:
[Macromedia][SQLServer JDBC Driver][SQLServer]Procedure or function
usp_readCrib has too many arguments specified.
In the case of both errors, they seem to be occurring at the following path:
Error Details - struct
COLUMN 0
ID CFSTOREDPROC
LINE 489
RAW_TRACE at cfbase2ecfc235349229$funcINVOKETAG.runFunction(E:\ColdFusion2016\cfusion\CustomTags\com\adobe\coldfusion\base.cfc:489)
TEMPLATE E: \ColdFusion2016\cfusion\CustomTags\com\adobe\coldfusion\base.cfc
TYPE CFML````
ColdFusion 10 and greater limit the amount of parameters in a request to 100 by default. Fortunately this can be updated and changed to reflect the required amount of parameters you need for your stored procedures.

Call stored procedure specifying only parameters with a value

In an instance of SQL Server 2016 I have a stored procedure with dozens of parameters. For example:
CREATE PROCEDURE spName (
#par1 INT = NULL,
#par2 VARCHAR(10) = NULL,
....
....
#par98 INT = NULL,
#par99 INT = NULL,
) AS
BEGIN
....
....
END
I have a client written in C# that calls the stored procedure specifying only the parameters with a value. Ex:
SqlCommand cmd = new SqlCommand();
cmd.CommandText = "spName";
cmd.CommandType = CommandType.StoredProcedure;
cmd.Connection = dbConn;
cmd.Parameters.Add(new SqlParameter("par1", "val1"));
cmd.Parameters.Add(new SqlParameter("par47", "val47"));
...
cmd.ExecuteNonQuery();
It works perfectly! So, the procedure is executed and only the 2 parameters (par1 and par47) have a value. Other parameters maintain the default value (NULL).
I would do the same from a Java client using Microsoft JDBC driver 6.2.
I specify the parameters with List<Map<String, Object>>, so a list of couple parameterName-->parameterValue. The following method builds the PreparedStatement object:
private CallableStatement prepareStatement(String spName, Map<String, ?> parameters) throws SQLException {
setupConnection();
CallableStatement stmt = null;
try {
stmt = conn.prepareCall(getSpCallString(spName, parameters));
if (parameters != null) {
for (String parName : parameters.keySet())
stmt.setObject(parName, parameters.get(parName));
}
} catch (SQLException e) {
ApplicationLogging.severe("Cannot prepare callable statement", e);
throw e;
}
return stmt;
}
The method getSpCallString() generates a string of the type { call spName ?,?, ... , ? } with a number of ? as the number of parameters with a value passed to the procedure, so not all 99 parameters. If I have 2 parameter it generates the string { call spName ?,? }.
By passing for example par15=val15 and par47=val47 it raises the following exception:
com.microsoft.sqlserver.jdbc.SQLServerException: The index 2 is out of range.
I could resolve this putting in the call command the same number of ? as the number of parameter of the stored procedure but... I don't know the number of parameters for each stored procedure (and their position)!
In C# this is simply resolved because the parameters are assigned only with their name, so the number and the order of parameters can be really a black box.
Can I do this in some way in Java?
This is a confirmed deficiency in the current implementation of named parameter support for CallableStatement in the mssql-jdbc driver. Despite section 13.3.2 of the JDBC 4.2 specification stating ...
Named parameters can be used to specify only the values that have no default value.
... we seem to be required to provide a parameter placeholder for every possible parameter, and there doesn't appear to be a way to specify DEFAULT for the parameters we might otherwise simply omit.
As a workaround we could use code like this
public static ResultSet executeStoredProcedureQuery(
Connection conn, String spName, Map<String, Object> paramItems)
throws SQLException {
StringBuffer sqlBuf = new StringBuffer("EXEC ");
sqlBuf.append(spName);
int paramCount = 1;
for (String paramName : paramItems.keySet()) {
sqlBuf.append(
(paramCount++ > 1 ? ", " : " ") +
(paramName.startsWith("#") ? "" : "#") + paramName + "=?");
}
String sql = sqlBuf.toString();
myLogger.log(Level.INFO, sql);
// e.g., EXEC dbo.BreakfastSP #helpings=?, #person=?, #food=?
PreparedStatement ps = conn.prepareStatement(sql);
paramCount = 1;
for (String paramName : paramItems.keySet()) {
ps.setObject(paramCount++, paramItems.get(paramName));
}
return ps.executeQuery();
}
which we could call like this
// test data
Map<String, Object> paramItems = new HashMap<>();
paramItems.put("#person", "Gord");
paramItems.put("#food", "bacon");
paramItems.put("#helpings", 3);
//
ResultSet rs = executeStoredProcedureQuery(conn, "dbo.BreakfastSP", paramItems);
If using a third party library to facilitate calling such procedures is an option for you, then jOOQ certainly helps via its code generator for stored procedures, which generates stubs for each of your procedures, making such calls type safe. It includes support for:
Table valued functions
Table valued parameters
Defaulted parameters
In / Out parameters
Optional return value of procedures
Fetching undeclared update counts and result sets
Much more
In your case, you could write:
Spname sp = new Spname();
sp.setPar1("val1");
sp.setPar47("val47");
sp.execute(configuration); // The object containing your JDBC connection
sp.getResults(); // The result set(s) and update counts, if any
Behind the scenes, a JDBC CallableStatement is created, just like you would do manually:
try (CallableStatement s = c.prepareCall(
"{ ? = call [dbo].[spName] (#par1 = ?, #par47 = ?) }"
)) {
// Get the optional procedure return value that all procedures might return
s.registerOutParameter(1, Types.INTEGER);
s.setString(2, "val1");
s.setString(3, "val47");
s.execute();
// Lengthy procedure to fetch update counts and result set(s)
}
See this article if you want to generically fetch update counts and result set(s) with JDBC.
Disclaimer: I work for the company behind jOOQ.

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