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POSpring named parameters: how can I parameterize Oracle interval in my query?
 

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  1. POSpring named parameters: how can I parameterize Oracle interval in my query?
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    <p>I am having an issue trying to parameterize interval parameter in my Oracle query:</p> <pre><code>select current_timestamp - interval :hours hour from dual </code></pre> <p>If I replace the interval parameter with constant then it executes just fine.</p> <p>Tried quoted and unquoted parameter in SQL.</p> <p>See an illustration using minimal snippet below:</p> <pre><code>public class Main { private static String SQL_CONSTANT_INTERVAL = "select current_timestamp - interval '1' hour from dual"; private static String SQL_PARAMETERIZED_INTERVAL_QUOTED = "select current_timestamp - interval ':hours' hour from dual"; private static String SQL_PARAMETERIZED_INTERVAL_UNQUOTED = "select current_timestamp - interval :hours hour from dual"; public static void main(String[] args) throws Exception { Properties properties = new Properties(); properties.load(Main.class.getClassLoader().getSystemResourceAsStream("db.properties")); DataSource dataSource = BasicDataSourceFactory.createDataSource(properties); NamedParameterJdbcTemplate npTemplate = new NamedParameterJdbcTemplate(dataSource); Map&lt;String, String&gt; params = Collections.singletonMap("hours", "1"); String[] queries = new String[] { SQL_CONSTANT_INTERVAL, SQL_PARAMETERIZED_INTERVAL_QUOTED, SQL_PARAMETERIZED_INTERVAL_UNQUOTED }; for (String q : queries) { System.out.println("Executing " + q); try { System.out.println("Result = " + npTemplate.queryForObject(q, params, String.class)); } catch (RuntimeException e) { System.out.println("Error: " + e); } System.out.println(); } } } </code></pre> <p>Output:</p> <pre><code>Executing select current_timestamp - interval '1' hour from dual Result = 2013-01-24 18:55:16.373 Europe/Moscow Executing select current_timestamp - interval ':hours' hour from dual 24-Jan-2013 20:55:16 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions INFO: Loading XML bean definitions from class path resource [org/springframework/jdbc/support/sql-error-codes.xml] 24-Jan-2013 20:55:16 org.springframework.jdbc.support.SQLErrorCodesFactory &lt;init&gt; INFO: SQLErrorCodes loaded: [DB2, Derby, H2, HSQL, Informix, MS-SQL, MySQL, Oracle, PostgreSQL, Sybase] Error: org.springframework.dao.DataIntegrityViolationException: PreparedStatementCallback; SQL [select current_timestamp - interval ':hours' hour from dual]; ORA-01867: the interval is invalid ; nested exception is java.sql.SQLDataException: ORA-01867: the interval is invalid Executing select current_timestamp - interval :hours hour from dual Error: org.springframework.jdbc.BadSqlGrammarException: PreparedStatementCallback; bad SQL grammar [select current_timestamp - interval ? hour from dual]; nested exception is java.sql.SQLSyntaxErrorException: ORA-00923: FROM keyword not found where expected </code></pre>
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