Insert into BOOKS values(2, 'NICANOR PARRAPOEMS Insert into BOOKS values(1, 'NOAM CHOMSKYCIVIL Create and populate tableĬreate table BOOKS (ID number, INFO varchar2(200), PUBDATE DATE) column_name | following example returns all records when the amount column is over 10,000 and does not cause a record to be discarded when amount is absent.The following example shows a field section search against a CTXCAT index using CONTEXT grammar by means of a query template in a CATSEARCH query. To test for a column's presence, use the following syntax. Test for a column's presence first, then for the column's value. TABLE DEMO.PEOPLE, FETCHBEFOREFILTER, FETCHCOLS (age), FILTER (age > 50) To retrieve the values before the FILTER or WHERE clause is executed, include the FETCHBEFOREFILTER option in the TABLE statement before the FILTER or WHERE clause. They query the database to fetch the values if they are not present in the log. These options are valid for all supported databases except SQL/MX. Alternatively, you can use the FETCHCOLS or FETCHCOLSEXCEPT option of the TABLE parameter. Make required column values available by enabling supplemental logging for those columns. Use only primary-key columns as selection criteria, if possible. To avoid missing-column errors, create your selection conditions as follows: Oracle GoldenGate ignores such row operations, outputs them to the discard file, and issues a warning. If the database only logs values for changed columns to the transaction log, there can be errors if any of the unchanged columns are referenced by selection criteria. The REPERROR clause for error 9999 ensures that the exceptions map to TARGEXC will be executed. The semicolon concludes the MAP statement.ĭesignates an exceptions MAP statement. Uses another FILTER clause to ensure that the value of the source COUNT column before an update matches the value in the target column before applying the target update. Uses a FILTER clause to select rows where the balance is greater than 15000.įILTER (ON UPDATE, (COUNT) = CHECK.COUNT) Performs a query to retrieve the present value of the COUNT column whenever an update is encountered. Raises an exception for the specified error. Table 7-6 Using Multiple FILTER Statements Parameter file This option is useful when you need to trigger an event in response to the failure. Use the RAISEERROR option of FILTER in the MAP parameter to generate a user-defined error when the filter fails. ON INSERT | ON UPDATE | ON DELETE IGNORE INSERT | IGNORE UPDATE | IGNORE DELETE Use the following FILTER options to specify which SQL operations a filter clause affects. Parentheses (for grouping results in the expression) Results derived from comparisons can be zero (indicating FALSE) or non-zero (indicating TRUE). See Testing and Transforming Data for more information about Oracle GoldenGate conversion functions. These functions are built into Oracle GoldenGate so that you can perform tests, manipulate data, retrieve values, and so forth. Valid FILTER clause elements are the following:Īn Oracle GoldenGate column-conversion function. The sytax for FILTER in a MAP statement is as follows and includes an error-handling option. The syntax for FILTER in a TABLE statement is as follows: To filter a column based on a string, use one of the Oracle GoldenGate string functions or use a WHERE clause.
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