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| 1 | def insert(db): | |
| 2 | ||
| 3 | query = QtSql.QSqlQuery() | |
| 4 | ||
| 5 | sql = """INSERT INTO EMPLOYEE(FIRST_NAME, | |
| 6 | ||
| 7 | LAST_NAME, AGE, SEX, INCOME) | |
| 8 | ||
| 9 | VALUES ('Mac', 'Mohan', 20, 'M', 2000)"""
| |
| 10 | ||
| 11 | try: | |
| 12 | ||
| 13 | query.exec_(sql) | |
| 14 | ||
| 15 | db.commit() | |
| 16 | ||
| 17 | except: | |
| 18 | ||
| 19 | # Rollback in case there is any error | |
| 20 | ||
| 21 | - | db.rollback() |
| 21 | + | db.rollback() |
| 22 | last_id = query.lastInsertId() | |
| 23 | print last_id | |
| 24 | ||
| 25 | def update(db): | |
| 26 | ||
| 27 | query = QtSql.QSqlQuery() | |
| 28 | ||
| 29 | sql = "UPDATE EMPLOYEE SET AGE = AGE + 1 \ | |
| 30 | ||
| 31 | WHERE SEX = '%c'" % ('M')
| |
| 32 | ||
| 33 | try: | |
| 34 | ||
| 35 | query.exec_(sql) | |
| 36 | ||
| 37 | db.commit() | |
| 38 | ||
| 39 | except: | |
| 40 | ||
| 41 | # Rollback in case there is any error | |
| 42 | ||
| 43 | db.rollback() | |
| 44 | ||
| 45 | ||
| 46 | ||
| 47 | def delete(db): | |
| 48 | ||
| 49 | query = QtSql.QSqlQuery() | |
| 50 | ||
| 51 | sql = "DELETE FROM EMPLOYEE WHERE AGE > '%d'" % (20) | |
| 52 | ||
| 53 | try: | |
| 54 | ||
| 55 | query.exec_(sql) | |
| 56 | ||
| 57 | db.commit() | |
| 58 | ||
| 59 | except: | |
| 60 | ||
| 61 | # Rollback in case there is any error | |
| 62 | ||
| 63 | db.rollback() |
