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Spring-Jdbc Template and Prepared statement


Spring-Jdbc Template and Prepared statement

By : Meeb05
Date : November 22 2020, 10:56 AM
it fixes the issue By default, the JDBCTemplate does its own PreparedStatement internally, if you just use the .update(String sql, Object ... args) form. Spring, and your database, will manage the compiled query for you, so you don't have to worry about opening, closing, resource protection, etc.
code :


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How to use INSERT INTO ALL statement in jdbc prepared statement with beans

How to use INSERT INTO ALL statement in jdbc prepared statement with beans


By : anwesh
Date : March 29 2020, 07:55 AM
help you fix your problem Kindly give me some example that how we can use "INSERT INTO ALL STATEMENT" in jdbc prepared statement inside a jsf bean? , The correct SQL syntax for a multi-insert is:
code :
INSERT INTO 
    tbl (col1, col2, col3) 
VALUES
    (val1a, val2a, val3a),
    (val1b, val2b, val3b),
    (val1c, val2c, val3c),
    ...
private static final String SQL_INSERT = "INSERT INTO tbl (col1, col2, col3) VALUES (?, ?, ?)";

public void save(List<Entity> entities) throws SQLException {
    Connection connection = null;
    PreparedStatement statement = null;

    try {
        connection = database.getConnection();
        statement = connection.prepareStatement(SQL_INSERT);

        for (Entity entity : entities) {
            statement.setObject(1, entity.getCol1());
            statement.setObject(2, entity.getCol2());
            statement.setObject(3, entity.getCol3());
            statement.addBatch();
        }

        statement.executeBatch();
    } finally {
        if (statement != null) try { statement.close(); } catch (SQLException ignore) {}
        if (connection != null) try { connection.close(); } catch (SQLException ignore) {}
    }
}
Spring JDBC Framework Conditional Prepared Statement

Spring JDBC Framework Conditional Prepared Statement


By : Gaurav
Date : March 29 2020, 07:55 AM
like below fixes the issue You can use SimpleJDBCTemplate.
code :
    // SQL query
    String query = "select adCampaignName,adCampaignId from AdCampaignDetails where 1=1";

    // Map with parameter value
    Map<String, Object> parameters = new HashMap<String, Object>();
    if (adCampaignName!=null){
        parameters.put("adCampaignName ", adCampaignName );
        query += " AND adCampaignName = :adCampaignName"; 
    }
    if (userId!=null){
        parameters.put("userId", 1);
        query += " AND userId= :userId"; 
    }

    // Execute query using simpleJDBC Template
    List<AdCampaignDetails> resultList = getSimpleJdbcTemplate().query(query, new customRowMapper(), parameters);   
Can “Case statement“ be safely used in a regular/prepared statement of JDBC?

Can “Case statement“ be safely used in a regular/prepared statement of JDBC?


By : SurgeArrester
Date : March 29 2020, 07:55 AM
Hope that helps The case statement is standard SQL and supported by almost all databases -- Oracle (except for the oldest versions), MySQL, SQL Server, DB2, Postgres, and all the Postgres derivatives. The one exception that I can readily think of is MS Access, but I would recommend that you avoid that anyway.
So, if your concern is compatibility for different database engines, you should be safe with case statements.
code :
routine rparent
on rparent.routineid = r.parentid
Can I execute a plain SQL statement with the Spring JDBC template?

Can I execute a plain SQL statement with the Spring JDBC template?


By : user3364976
Date : March 29 2020, 07:55 AM
help you fix your problem From my point of view:
a non-plain sql is a query in jql. Some stuff is quite complicate to achive with jql (ie. joins over a few tables) in an already existent data scheme. jpa requests primary keys in tables - which is not always the case in existent databases the question aims on 'i wanna have a fallback to traditional queries to do my everyday's life'
How can I convert this code to prepared-statement or statement in jdbc?

How can I convert this code to prepared-statement or statement in jdbc?


By : Dipak-user3085702
Date : March 29 2020, 07:55 AM
I wish did fix the issue. Use executeUpdate() Or execute() to issue data manipulation statements. executeQuery() is only meant for SELECT queries.
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