SQLite supports 8-byte integer columns and the FieldType evaluates to 19 (64-bit integer). The maximum number of digits is implementation-specific. If you are using another data source, check the documentation of your data source.Ī numeric data type with no fractional part. The maximum number of digits is implementation-specific, but is usually less than or equal to INTEGER. Stores the byte representation of a character string.Ī numeric data type with no fractional part. This table identifies the Column Type based on the FieldType Integer:ĭenotes the absence of any value, i.e., a missing value. ODBC Databases may return different columns depending upon the database to which you are connecting.
Length: An integer that describes the length of the field (for some text fields), the precision of numeric data (for some numeric fields) or the default value for a field (for SQLite columns). NotNull: A boolean that indicates if the column can be set to NULL. IsPrimary: A boolean that indicates if the column is part of the primary key. TableColumns returns a RowSet with these columns:ĬolumnName: A string that is the name of the column.įieldType: An integer that describes the type of the column (refer to the table below). If an error occurs, a DatabaseException will be raised. For example, to create a prepared statement for PostgreSQL: To create a prepared statement, you use the appropriate class for the Database you are using. SQL Injection is a way to attack Database-driven applications. If the provided SQL statement has an error, a DatabaseException will occur when you call SelectSQL or ExecuteSQL.
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Refer to the specific PreparedStatement class for the Database you are using to learn how to specify and bind parameters: To create a prepared statement, you assign the value of Prepare to appropriate class for the Database you are using. Prepared statements also mitigate the risk of SQL injection in web apps. A prepared statement is an SQL statement with parameters that has been pre-processed by the Database so that it can be executed more quickly if it is re-used with different parameters. Prepare(statement As String) As PreparedSQLStatementĬreates a PreparedSQLStatement using the SQL statement for use with the various Database prepared statement classes. ExecuteSQL ( sql ) MessageBox ( "Team table created successfully." ) Catch error As DatabaseException MessageBox ( "DB Error: " + error. db is a SQLite database Var sql As String sql = "CREATE TABLE Team (ID INTEGER NOT NULL, Name TEXT, Coach TEXT, City TEXT, PRIMARY KEY(ID)) " Try db. Reporting bugs and making feature requests.
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