Stores alphabetic data, in which the number of characters vary from record to record, but you don't want to pad the unused characters with blanks. If a record contains fewer than the maximum number of characters for the field, the remaining characters will be padded with blanks. Stores alphabetic data, in which you specify the maximum number of characters for the field, i.e., CHAR (20) for a 20 character field. 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. 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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