close
Close SQL prepared statement
Syntax
Description
close(
closes the SQL prepared statement
specified by an pstmt
)SQLPreparedStatement
object.
Examples
Import Data Using SQL Prepared Statement
Create an SQL prepared statement to import data from a Microsoft® SQL Server® database using a JDBC database connection. Use the SELECT
SQL statement for the SQL query. Import the data from the database and display the results.
Create a JDBC database connection to an SQL Server database with Windows® authentication. Specify a blank user name and password.
datasource = 'MSSQLServerJDBCAuth'; conn = database(datasource,'','');
Create an SQL prepared statement for importing data from the SQL Server database using the JDBC database connection. The question marks in the SELECT
SQL statement indicate it is an SQL prepared statement. This statement selects all data from the database table inventoryTable
for the inventory that has an inventory date within a specified date range.
query = strcat("SELECT * FROM inventoryTable ", ... "WHERE inventoryDate > ? AND inventoryDate < ?"); pstmt = databasePreparedStatement(conn,query)
pstmt = SQLPreparedStatement with properties: SQLQuery: "SELECT * FROM inventoryTable where inventoryDate > ? AND inventoryDate < ?" ParameterCount: 2 ParameterTypes: ["string" "string"] ParameterValues: {[] []}
pstmt
is an SQLPreparedStatement
object with these properties:
SQLQuery
— SQL prepared statement queryParameterCount
— Parameter countParameterTypes
— Parameter typesParameterValues
— Parameter values
Bind parameter values in the SQL prepared statement. Select both parameters in the SQL prepared statement using their numeric indices. Specify the values to bind as the inventory date range between January 1, 2014, and December 31, 2014. Match the format of dates in the database. The bindParamValues
function updates the values in the ParameterValues
property of the pstmt
object.
selection = [1 2]; values = {"2014-01-01 00:00:00.000", ... "2014-12-31 00:00:00.000"}; pstmt = bindParamValues(pstmt,selection,values)
pstmt = SQLPreparedStatement with properties: SQLQuery: "SELECT * FROM inventoryTable where inventoryDate > ? AND inventoryDate < ?" ParameterCount: 2 ParameterTypes: ["string" "string"] ParameterValues: {["2014-01-01 00:00:00.000"] ["2014-12-31 00:00:00.000"]}
Import data from the database using the fetch
function and bound parameter values. The results contain four rows of data that represent all inventory with an inventory date between January 1, 2014 and December 31, 2014.
results = fetch(conn,pstmt)
results=4×4 table
productNumber Quantity Price inventoryDate
_____________ ________ _____ _______________________
1 1700 14.5 {'2014-09-23 09:38:34'}
2 1200 9 {'2014-07-08 22:50:45'}
3 356 17 {'2014-05-14 07:14:28'}
7 6034 16 {'2014-08-06 08:38:00'}
Close the SQL prepared statement and database connection.
close(pstmt) close(conn)
Input Arguments
pstmt
— SQL prepared statement
SQLPreparedStatement
object
SQL prepared statement, specified as an SQLPreparedStatement
object.
Version History
Introduced in R2019b
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