If you have a lot of data or if this will be a repeating process, consider External Tables or SQL*Loader instead.Just a few more pointers when it comes to Excel WeвЂ™ll show you the file we worked with, and how much time it took to load the data. Now letвЂ™s go look at our new table data! I love the sweet smell of data in the morning! But if you have thousands of rejected rows вЂ“ better to fix at the source. You might be able to edit those manually to fix a few records. Behind that dialog are the INSERT statements we tried to run, but didnвЂ™t work. If there were rows rejected by the database, weвЂ™ll see those now. Then you can either fix your data in the Excel file, or make changes to your table so the data will fit/work.ДЄfter clicking вЂYesвЂ™, weвЂ™ll get to the end of our story, and our data! Step 7: See What Worked and What DidnвЂ™t But, if you need EVERY single row вЂ“ you need to say вЂCancelвЂ™ to start over. IвЂ™m going to say вЂYesвЂ™ to ignore all the errors. If the Wizard runs into any problems doing the INSERTs, youвЂ™ll see this: Remember that funny data i put into the Excel file? ThatвЂ™s causing problems now. Step 6: Verify your settings and GO! The вЂFinishвЂ™ button will start the magic. If you see the little warning graphics next to your Date values in the Data panel, you might have the wrong format. The Oracle Docs can help you define the correct DATE Format Model. If we have guessed wrong, or were unable to figure it out, youвЂ™ll need to input this yourself. See the вЂFormatвЂ™ drop down selector? SQL Developer has defaulted the DATE format string to вЂDD-MON-RRвЂ™ вЂ“ we try to guess based on the rows weвЂ™re looking at in that 100 preview window. That вЂha haвЂ™ value will never make it in as a HIRE_DATE value вЂ“ unless youвЂ™re storing DATES in a VARCHAR2 вЂ“ and if youвЂ™re doing that, youвЂ™re doing it WRONG. SQL Developer is treating those value as strings вЂ“ and YOU need to tell SQL Developer the DATE or TIMESTAMP format to use to be able to convert them. In the excel file, youвЂ™re probably going to have some date/time fields you want to move into DATE or TIMESTAMP columns. IвЂ™ve polluted my Excel file with some values that I know wonвЂ™t вЂfit.вЂ™ When these rows are encountered in the wizard, theyвЂ™ll be rejected by the database вЂ“ but the other rows will come in.ДЄnd TIMESTAMPS too. If we find a problem, weвЂ™ll mark the columns with those вЂwarningвЂ™ symbols. This is where you will tell SQL Developer what columns in the spreadsheet match up to what columns in the Oracle table.ДЄnd remember how we set that preview window to 100 rows? WeвЂ™re peaking at the data, looking for problems as we try to fit it into your table column. ThereвЂ™s a good chance the column order of the Excel file wonвЂ™t match the definition of your table. If youвЂ™re not paying attention and just letting the wizard guide you home, then now is the time to wake up. The information on the right shows where that data is going, and how it will be treated. Step 5: Map the Excel Columns to the Table Columns The left panel represents the columns in the XLS file. You can also modify the column order, which may make the next step a bit easier. This is where you tell SQL Developer what columns are to be used for the import. You may have an Excel file with 100 columns but your table only has 30. Step 4: Select the Excel Columns to be Imported The wizard defaults to all of the Excel columns being used, in the order theyвЂ™re found in the file. Working with CSV? YouвЂ™ll get even more methods вЂ“ great for VERY LARGE data sets. This is a nice alternative if you want to customize the SQL, or if you need to debug/see why the вЂInsertвЂ™ method isnвЂ™t working. If you choose вЂInsert ScriptвЂ™, the wizard will end with an INSERT Script in your SQL Worksheet. Each row processed in the Excel file will result in an INSERT statement executed on the table weвЂ™re importing to. Step 3: Create a script or import automatically As the wizard progresses, weвЂ™ll keep the File Contents preview panel handy so you donвЂ™t have to alt+tab back and forth from Excel to SQL Developer.ДЇor this exercise the вЂInsertвЂ™ method will be used. Use the вЂSkip RowsвЂ™ option to get the right data. Sometimes your Excel file has multiple headers, or you may need to only import a certain subset of the spreadsheet. If you uncheck the вЂHeaderвЂ™ flag, the column names will become a new row in your table вЂ“ and probably fail to be inserted. You can increase it, but that will take more resources, so donвЂ™t go crazy.ДЄlso, does your Excel file have column headers? Do we want to treat those as a row to the table? Probably not. This вЂPreview Row LimitвЂ™ defines how many rows you can use to verify the IMPORT as we step through the wizard. Step 2: Select your input (XLSX) file and verify the data If youвЂ™ve ran this wizard before, you can pick files from previous sessions.ДЄs you select the file, weвЂ™ll grab the first 100 rows for you to browse below.

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