Recommended Data Types for CopperSpice Supported Database Systems
These tables show the recommended data types for extracting data from the databases supported in CopperSpice. Types used in CopperSpice are not necessarily valid as input types to a specific database system. For example, a double might work perfectly as input for floating point records in a particular database, but not necessarily as a storage format for output from that database, because it would be stored with 64-bit precision in C++.
IBM DB2 Data Types
| SQL Type | SQL Type Description | Recommended Type |
| SMALLINT | 16-bit signed integer | typedef qint16 |
| INTEGER | 32-bit signed integer | typedef qint32 |
| BIGINT | 64-bit signed integer | typedef qint64 |
| REAL | 32-bit Single-precision floating point | Mapped to QString |
| DOUBLE PRECISION | 64-bit Double-precision floating point | Mapped to QString |
| FLOAT | 64-bit Double-precision floating point | Mapped to QString |
| CHAR | Fixed-length, null-terminated character string | Mapped to QString |
| VARCHAR | Null-terminated varying length string | Mapped to QString |
| LONG VARCHAR | Not null-terminated varying length character string | Mapped to QString |
| BLOB | Not null-terminated varying binary string with 4-byte string length indicator | Mapped to QByteArray |
| CLOB | Character large string object | Mapped to QString |
| DATE | Null-terminated character string of the following format: yyyy-mm-dd | Mapped to QDate |
| TIME | Null-terminated character string of the following format: hh.mm.ss | Mapped to QTime |
| TIMESTAMP | Null-terminated character string of the following format: yyyy-mm-dd-hh.mm.ss.nnnnnn | Mapped to QDateTime |
Borland InterBase Data Types
| SQL Type | SQL Type Description | Recommended Type |
| BOOLEAN | Boolean | bool |
| TINYINT | 8 bit signed integer | typedef qint8 |
| SMALLINT | 16-bit signed integer | typedef qint16 |
| INTEGER | 32-bit signed integer | typedef qint32 |
| BIGINT LONG | 64-bit signed integer | typedef qint64 |
| REAL FLOAT | 32-bit floating point | Mapped to QString |
| FLOAT | 64-bit floating point | Mapped to QString |
| DOUBLE | 64-bit floating point | Mapped to QString |
| DOUBLE PRECISION | 64-bit Double-precision floating point | Mapped to QString |
| VARCHAR STRING | Character string, Unicode | Mapped to QString |
| CLOB | Character large string object | Mapped to QString |
| DATE | Displays date. Format: 'yyyy-mm-dd' | Mapped to QDate |
| TIME | Displays time. Format is 'hh:mm:ss' in 24-hour format | Mapped to QTime |
| TIMESTAMP | Displays a timestamp. Format is 'yyyy-mm-dd hh:mm:ss' | Mapped to QDateTime |
MySQL Data Types
| SQL Type | SQL Type Description | Recommended Type |
| TINYINT | 8 bit signed integer | typedef qint8 |
| TINYINT UNSIGNED | 8 bit unsigned integer | typedef quint8 |
| SMALLINT | 16-bit signed integer | typedef qint16 |
| SMALLINT UNSIGNED | 16-bit unsigned integer | typedef quint16 |
| INT | 32-bit signed integer | typedef qint32 |
| INT UNSIGNED | 32-bit unsigned integer | typedef quint32 |
| BIGINT | 64-bit signed integer | typedef qint64 |
| FLOAT | 32-bit Floating Point | Mapped to QString |
| DOUBLE | 64-bit Floating Point | Mapped to QString |
| CHAR | Character string | Mapped to QString |
| VARCHAR | Character string | Mapped to QString |
| TINYTEXT | Character string | Mapped to QString |
| TEXT | Character string | Mapped to QString |
| MEDIUMTEXT | Character string | Mapped to QString |
| LONGTEXT | Character string | Mapped to QString |
| CLOB | Character large string object | Mapped to QString |
| all BLOB types | BLOB | Mapped to QByteArray |
| DATE | Date without Time | Mapped to QDate |
| DATETIME | Date and Time | Mapped to QDateTime |
| TIMESTAMP | Date and Time | Mapped to QDateTime |
| TIME | Time | Mapped to QTime |
| YEAR | Year (int) | Mapped to QDateTime |
| ENUM | Enumeration of Value Set | Mapped to QString |
Oracle Call Interface Data Types
| SQL Type | SQL Type Description | Recommended Type |
| NUMBER | FLOAT, DOUBLE, PRECISIONc REAL | Mapped to QString |
| NUMBER(38) | INTEGER INT SMALLINT | Mapped to qint8, qint16,
qint32, qint64 |
| NUMBER(p,s) | NUMERIC(p,s) DECIMAL(p,s)a | Mapped to QString |
| NVARCHAR2(n) | Character string (NATIONAL CHARACTER VARYING(n) NATIONAL CHAR VARYING(n) NCHAR VARYING(n)) | Mapped to QString |
| NCHAR(n) | Character string (NATIONAL CHARACTER(n) NATIONAL CHAR(n) NCHAR(n)) | Mapped to QString |
| CHAR(n) | Character string (CHARACTER(n) CHAR(n)) | Mapped to QString |
| CLOB | Character large string object | Mapped to QString |
| BLOB | A binary large object | Mapped to QByteArray |
| TIMESTAMP | Year, month, and day values of date, as well as hour, minute, and second values of time | Mapped to QDateTime |
ODBC Data Types
| SQL Type | SQL Type Description | Recommended Type |
| BIT | Boolean | BOOL |
| TINYINT | 8 bit integer | typedef qint8 |
| SMALLINT | 16-bit signed integer | typedef qint16 |
| INTEGER | 32-bit signed integer | typedef qint32 |
| BIGINT | 64-bit signed integer | typedef qint64 |
| REAL | 32-bit Single-precision floating point | Mapped to QString |
| FLOAT | 64-bit Double floating point | Mapped to QString |
| DOUBLE | 64-bit Double floating point | Mapped to QString |
| CHAR | Character string | Mapped to QString |
| VARCHAR | Character string | Mapped to QString |
| LONGVARCHAR | Character string | Mapped to QString |
| CLOB | Character large string object | Mapped to QString |
| DATE | Character string | Mapped to QDate |
| TIME | Character Time, Character string | Mapped to QTime |
| TIMESTAMP | Character Time, Character string | Mapped to QDateTime |
PostgreSQL Data Types
| SQL Type | SQL Type Description | Recommended Type |
| BOOLEAN | Boolean | bool |
| SMALLINT | 16-bit signed integer | typedef qint16 |
| INTEGER | 32-bit signed integer | typedef qint32 |
| BIGINT | 64-bit signed integer | typedef qint64 |
| REAL | 32-bit variable-precision floating point | Mapped to QString |
| DOUBLE PRECISION | 64-bit variable-precision floating point | Mapped to QString |
| DECIMAL VARIABLE | user-specified precision, exact | Mapped to QString |
| NUMERIC VARIABLE | user-specified precision, exact | Mapped to QString |
| VARCHAR | variable-length character string | Mapped to QString |
| CHARACTER | Character string of fixed-length | Mapped to QString |
| TEXT | Character string of variable-length | Mapped to QString |
| CLOB | Character large string object | Mapped to QString |
| TIMESTAMP | 8 bytes, both date and time | Mapped to QDateTime |
| TIMESTAMP | 8 bytes, both date and time, with time zone | Mapped to QDateTime |
| DATE | 4 bytes, dates only | Mapped to QDate |
| TIME | 8 bytes, times of day only 00:00:00.00 - 23:59:59.99 | Mapped to QTime |
| TIME | 12 bytes times of day only, with time zone 00:00:00.00+12 | Mapped to QDateTime |
QSQLITE SQLite version 3 Data Types
| SQL Type | SQL Type Description | Recommended Type |
| NULL | NULL value. | NULL |
| INTEGER | Signed integer, stored in 8, 16, 24, 32, 48, or 64-bits depending on the magnitude of the value. | Mapped to qint8, qint16,
qint32, qint64 |
| REAL | 64-bit floating point value. | Mapped to QString |
| TEXT | Character string (UTF-8, UTF-16BE or UTF-16LE). | Mapped to QString |
| CLOB | Character large string object | Mapped to QString |
| BLOB | The value is a BLOB of data, stored exactly as it was input. | Mapped to QByteArray |
1.6.0