SAP DB:ODBC Guida di Installazione Scaricare il pdf (Pagina 179)

9. DB-API Type Objects and Constructors

TimeFromTicks(ticks)

This function constructs an mxDateTime DateTimeDelta object holding a time

value from the given ticks value (number of seconds since the epoch; see the

documentation of the standard Python

time module for details).

TimestampFromTicks(ticks)

This function constructs an mxDateTime DateTime object holding a time

stamp value from the given ticks value (number of seconds since the epoch;

see the documentation of the standard Python

time module for details).

Usage of Unix ticks (number of seconds since the Epoch) for date/time

database interfacing can cause troubles because of the limited date range they

cover.

Binary(string)

This function constructs a buffer object pointing to the (long) string value. On

Python versions without buffer objects (prior to 1.5.2), the string is taken as is.

STRING

This type object is used to describe columns in a database that are string-

based:

SQL.CHAR, SQL.BINARY.

BINARY

This type object is used to describe (long) binary columns in a database:

SQL.LONGVARCHAR, SQL.LONGVARBINARY (e.g. LONG, RAW, BLOB, TEXT).

NUMBER

This type object is used to describe numeric columns in a database:

SQL.DECIMAL, SQL.NUMERIC, SQL.DOUBLE, SQL.FLOAT, SQL.REAL,

SQL.DOUBLE, SQL.INTEGER, SQL.TINYINT, SQL.SMALLINT, SQL.BIT,

SQL.BIGINT.

DATETIME

This type object is used to describe date/time columns in a database:

SQL.DATE, SQL.TIME, SQL.TIMESTAMP.

ROWID

This type object is used to describe the "Row ID" column in a database.

mxODBC does not support this special column type and thus no type code is

equal to this type object.

SQL NULL values are represented by the Python None singleton on input and

output.

157

1 2 ... 174 175 176 177 178 179 180 181 182 183 184 ... 224 225

Nessun commento

SAP DB:ODBC Guida di Installazione Pagina 179