Step 4. Resolve data load errors related to data issues¶
In the preceding step, the COPY INTO command skipped loading one of the files when it encountered the first error. You need to find all the errors. In this step, you use the VALIDATE function to validate the previous execution of the COPY INTO command and return all errors.
Validate the sample data files and retrieve any errors¶
You first need the retrieve query ID associated with the COPY INTO command
that you previously executed. You then call the VALIDATE
function,
specifying the query ID.
Retrieve the query ID.
Sign in to Snowsight.
Make sure the role in Snowsight is the same as the role you are using in SnowSQL to run SQL statements for this tutorial.
Select Monitoring » Query History.
Select the row for the specific COPY INTO command to open the query information pane.
Copy the Query ID value.
Validate the COPY INTO command execution, represented by the query ID, and save errors to a new table named
save_copy_errors
.In SnowSQL, execute the following command. Replace
query_id
with the Query ID value.CREATE OR REPLACE TABLE save_copy_errors AS SELECT * FROM TABLE(VALIDATE(mycsvtable, JOB_ID=>'<query_id>'));
CopyQuery the
save_copy_errors
table.SELECT * FROM SAVE_COPY_ERRORS;
CopyThe query returns the following results:
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------------------------------+------+-----------+-------------+----------+--------+-----------+-------------------------------+------------+----------------+-----------------------------------------------------------------------------------------------------------------------------------------------------+ | ERROR | FILE | LINE | CHARACTER | BYTE_OFFSET | CATEGORY | CODE | SQL_STATE | COLUMN_NAME | ROW_NUMBER | ROW_START_LINE | REJECTED_RECORD | |----------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------------------------------+------+-----------+-------------+----------+--------+-----------+-------------------------------+------------+----------------+-----------------------------------------------------------------------------------------------------------------------------------------------------| | Number of columns in file (11) does not match that of the corresponding table (10), use file format option error_on_column_count_mismatch=false to ignore this error | mycsvtable/contacts3.csv.gz | 3 | 1 | 234 | parsing | 100080 | 22000 | "MYCSVTABLE"[11] | 1 | 2 | 11|Ishmael|Burnett|Dolor Elit Pellentesque Ltd|vitae.erat@necmollisvitae.ca|1-872|600-7301|1-513-592-6779|P.O. Box 975, 553 Odio, Road|Hulste|63345 | | Field delimiter '|' found while expecting record delimiter '\n' | mycsvtable/contacts3.csv.gz | 5 | 125 | 625 | parsing | 100016 | 22000 | "MYCSVTABLE"["POSTALCODE":10] | 4 | 5 | 14|Sophia|Christian|Turpis Ltd|lectus.pede@non.ca|1-962-503-3253|1-157-|850-3602|P.O. Box 824, 7971 Sagittis Rd.|Chattanooga|56188 | +----------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------------------------------+------+-----------+-------------+----------+--------+-----------+-------------------------------+------------+----------------+-----------------------------------------------------------------------------------------------------------------------------------------------------+
Copy
The result shows two data errors in mycsvtable/contacts3.csv.gz
:
Number of columns in file (11) does not match that of the corresponding table (10)
In Row 1, a hyphen was mistakenly replaced with the pipe (
|
) character, the data file delimiter, effectively creating an additional column in the record.Field delimiter '|' found while expecting record delimiter 'n'
In Row 5, an additional pipe (
|
) character was introduced after a hyphen, breaking the record.
Fix the errors and load the data files again¶
In regular use, you would fix the problematic records manually and write them to a new data file. You would then stage the fixed data files to the S3 bucket and attempt to reload the data from the files. For this tutorial, you are using Snowflake provided sample data, which you do not correct.
Verify the loaded data¶
Execute a SELECT statement to verify that the data was loaded successfully.
CSV¶
SELECT * FROM mycsvtable;Copy
The query returns the following results:
+----+-----------+------------+----------------------------------+----------------------------------------+----------------+----------------+--------------------------------+------------------+------------+ | ID | LAST_NAME | FIRST_NAME | COMPANY | EMAIL | WORKPHONE | CELLPHONE | STREETADDRESS | CITY | POSTALCODE | |----+-----------+------------+----------------------------------+----------------------------------------+----------------+----------------+--------------------------------+------------------+------------| | 6 | Reed | Moses | Neque Corporation | eget.lacus@facilisis.com | 1-449-871-0780 | 1-454-964-5318 | Ap #225-4351 Dolor Ave | Titagarh | 62631 | | 7 | Audrey | Franks | Arcu Eu Limited | eu.dui@aceleifendvitae.org | 1-527-945-8935 | 1-263-127-1173 | Ap #786-9241 Mauris Road | Bergen | 81958 | | 8 | Jakeem | Erickson | A Ltd | Pellentesque.habitant@liberoProinmi.ca | 1-381-591-9386 | 1-379-391-9490 | 319-1703 Dis Rd. | Pangnirtung | 62399 | | 9 | Xaviera | Brennan | Bibendum Ullamcorper Limited | facilisi.Sed.neque@dictum.edu | 1-260-757-1919 | 1-211-651-0925 | P.O. Box 146, 8385 Vel Road | Béziers | 13082 | | 10 | Francis | Ortega | Vitae Velit Egestas Associates | egestas.rhoncus.Proin@faucibus.com | 1-257-584-6487 | 1-211-870-2111 | 733-7191 Neque Rd. | Chatillon | 33081 | | 16 | Aretha | Sykes | Lobortis Tellus Justo Foundation | eget@Naminterdumenim.net | 1-670-849-1866 | 1-283-783-3710 | Ap #979-2481 Dui. Av. | Thurso | 66851 | | 17 | Akeem | Casey | Pharetra Quisque Ac Institute | dictum.eu@magna.edu | 1-277-657-0361 | 1-623-630-8848 | Ap #363-6074 Ullamcorper, Rd. | Idar-Oberstei | 30848 | | 18 | Keelie | Mendez | Purus In Foundation | Nulla.eu.neque@Aeneanegetmetus.co.uk | 1-330-370-8231 | 1-301-568-0413 | 3511 Tincidunt Street | Lanklaar | 73942 | | 19 | Lane | Bishop | Libero At PC | non@dapibusligula.ca | 1-340-862-4623 | 1-513-820-9039 | 7459 Pede. Street | Linkebeek | 89252 | | 20 | Michelle | Dickson | Ut Limited | Duis.dignissim.tempor@cursuset.org | 1-202-490-0151 | 1-129-553-7398 | 6752 Eros. St. | Stornaway | 61290 | | 20 | Michelle | Dickson | Ut Limited | Duis.dignissim.tempor@cursuset.org | 1-202-490-0151 | 1-129-553-7398 | 6752 Eros. St. | Stornaway | 61290 | | 21 | Lance | Harper | Rutrum Lorem Limited | Sed.neque@risus.com | 1-685-778-6726 | 1-494-188-6168 | 663-7682 Et St. | Gisborne | 73449 | | 22 | Keely | Pace | Eleifend Limited | ante.bibendum.ullamcorper@necenim.edu | 1-312-381-5244 | 1-432-225-9226 | P.O. Box 506, 5233 Aliquam Av. | Woodlands County | 61213 | | 23 | Sage | Leblanc | Egestas A Consulting | dapibus@elementum.org | 1-630-981-0327 | 1-301-287-0495 | 4463 Lorem Road | Woodlands County | 33951 | | 24 | Marny | Holt | Urna Nec Luctus Associates | ornare@vitaeorci.ca | 1-522-364-3947 | 1-460-971-8360 | P.O. Box 311, 4839 Nulla Av. | Port Coquitlam | 36733 | | 25 | Holly | Park | Mauris PC | Vestibulum.ante@Maecenasliberoest.org | 1-370-197-9316 | 1-411-413-4602 | P.O. Box 732, 8967 Eu Avenue | Provost | 45507 | | 1 | Imani | Davidson | At Ltd | nec@sem.net | 1-243-889-8106 | 1-730-771-0412 | 369-6531 Molestie St. | Russell | 74398 | | 2 | Kelsie | Abbott | Neque Sed Institute | lacus@pede.net | 1-467-506-9933 | 1-441-508-7753 | P.O. Box 548, 1930 Pede. Road | Campbellton | 27022 | | 3 | Hilel | Durham | Pede Incorporated | eu@Craspellentesque.net | 1-752-108-4210 | 1-391-449-8733 | Ap #180-2360 Nisl. Street | Etalle | 84025 | | 4 | Graiden | Molina | Sapien Institute | sit@fermentum.net | 1-130-156-6666 | 1-269-605-7776 | 8890 A, Rd. | Dundee | 70504 | | 5 | Karyn | Howard | Pede Ac Industries | sed.hendrerit@ornaretortorat.edu | 1-109-166-5492 | 1-506-782-5089 | P.O. Box 902, 5398 Et, St. | Saint-Hilarion | 26232 | +----+-----------+------------+----------------------------------+----------------------------------------+----------------+----------------+--------------------------------+------------------+------------+Copy
JSON¶
SELECT * FROM myjsontable;Copy
The query returns the following results:
+-----------------------------------------------------------------+ | JSON_DATA | |-----------------------------------------------------------------| | { | | "customer": { | | "_id": "5730864df388f1d653e37e6f", | | "address": "509 Kings Hwy, Comptche, Missouri, 4848", | | "company": "ORBIN", | | "email": "blankenship.patrick@orbin.ca", | | "name": { | | "first": "Blankenship", | | "last": "Patrick" | | }, | | "phone": "+1 (999) 407-2274" | | } | | } | | { | | "customer": { | | "_id": "5730864d4d8523c8baa8baf6", | | "address": "290 Lefferts Avenue, Malott, Delaware, 1575", | | "company": "SNIPS", | | "email": "anna.glass@snips.name", | | "name": { | | "first": "Anna", | | "last": "Glass" | | }, | | "phone": "+1 (958) 411-2876" | | } | | } | | { | | "customer": { | | "_id": "5730864e375e08523150fc04", | | "address": "756 Randolph Street, Omar, Rhode Island, 3310", | | "company": "ESCHOIR", | | "email": "sparks.ramos@eschoir.co.uk", | | "name": { | | "first": "Sparks", | | "last": "Ramos" | | }, | | "phone": "+1 (962) 436-2519" | | } | | } | +-----------------------------------------------------------------+Copy
Next: Step 5. Clean up