In this example you use the class SQLError of the sdb.sql module. To generate exceptions of this class, you cause the following error situation: You execute a SELECT statement with an incorrect column name and you execute an SQL statement with an incorrect parameter.
...
1. Create a Python script sample.py with the following contents:
#
# Import Python modules
# ---------------------------------------------------
import sys
import sdb.sql
#
# Connect to the database instance
# ---------------------------------------------------
database_user = sys.argv [1]
database_user_password = sys.argv [2]
database_name = sys.argv [3]
session = sdb.sql.connect (database_user, database_user_password, database_name)
#
# Execute a SELECT statement with an incorrect column
# name unknown (error in the SQL statement)
#----------------------------------------------------
select = "SELECT unknown FROM hotel.customer"
try:
cursor = session.sql (select)
except sdb.sql.SQLError, err:
print "ERR [%d] %s" % (err.errorCode, err.message)
print select
print ("=" * (err.errorPos - 1)) + '^'
#
# Execute SQL statement with an incorrect parameter
# (error during execution of the SQL statement)
#-----------------------------------------------------
try:
count = session.sqlX ("""INSERT INTO hotel.customer
VALUES (?,?,?,?,?,?)""", ['wrong_data_type', 'Mrs', 'Jennifer', 'Parker', '10590', '0 N.Ash Street, #6'])
except sdb.sql.SQLError, err:
print "ERR [%d] %s" % (err.errorCode, err.message)
#
# Close connection to the database instance
# ----------------------------------------------------
session.release ()
2. Call the Python script:
python sample_6.py MONA RED DEMODB
ERR [-4005] Unknown column name:UNKNOWN
SELECT unknown FROM hotel.customer
=======^
ERR [-817] Incompatible data types
See also:
Examples for the sdb.sql Module