Results of 1 - 10 of about 16 for quote (0.002 sec.)
- CSV Auto Detection 12736
- When using read_csv , the system tries to automatically infer how to read the CSV file using the CSV sniffer . This step is necessary because CSV files are not self-describing and come in many different dialects. The auto-detection works ro
...values can be passed directly to read_csv . Column name Description read_csv parameter Example Delimiter Delimiter delim , Quote Quote character quote " Escape Escape escape \ NewLineDelimiter New-line delimiter new_line \r\n Comment Comment character...mode line SELECT Prompt FROM sniff_csv('my_file.csv'); Prompt = FROM read_csv('my_file.csv', auto_detect=false, delim=',', quote='"', escape='"', new_line='\n', skip=0, header=true, columns={...}); Detection Steps Dialect Detection Dialect detection w...ch row. The following dialects are considered for automatic dialect detection. Parameters Considered values delim , | ; \t quote " ' (empty) escape " ' \ (empty) Consider the example file flights.csv : FlightDate|UniqueCarrier|OriginCityName|DestCityN... - https://man.mtool.work/duckdb/2.0/data/csv/auto_detection.html
- Describe 11818
- Describing a Table To view the schema of a table, use the DESCRIBE statement (or its alias DESC ) followed by the table name. CREATE TABLE tbl (i INTEGER PRIMARY KEY, j VARCHAR); DESCRIBE tbl; column_name column_type null key default extra
...LL bool_ship_photon_torpedos_fired BIGINT YES NULL NULL NULL cnt_transporter_pax BIGINT YES NULL NULL NULL cnt_damn_it_jim_quote BIGINT YES NULL NULL NULL cnt_im_givin_her_all_shes_got_quote BIGINT YES NULL NULL NULL cnt_highly_illogical_quote BIGINT... - https://man.mtool.work/duckdb/2.0/guides/meta/describe.html
- Reading Faulty CSV Files 10882
- CSV files can come in all shapes and forms, with some presenting many errors that make the process of cleanly reading them inherently difficult. To help users read these files, DuckDB supports detailed error messages, the ability to skip fa
...than expected. In our example, any line with more than two columns would cause this error, e.g., Pedro,01-01-1992,pdet . UNQUOTED VALUE : Quoted values in CSV lines must always be unquoted at the end; if a quoted value remains quoted throughout, it wi...ll cause an error. For example, assuming our scanner uses quote='"' , the line "pedro"holanda, 01-01-1992 would present an unquoted value error. LINE SIZE OVER MAXIMUM : DuckDB has a par...Use a COPY statement to automatically derive types from an existing table. file= people.csv delimiter = , (Auto-Detected) quote = " (Auto-Detected) escape = " (Auto-Detected) new_line = \r\n (Auto-Detected) header = true (Auto-Detected) skip_rows = 0... - https://man.mtool.work/duckdb/2.0/data/csv/reading_faulty_csv_files.html
- CSV Import 9600
- Examples The following examples use the flights.csv file. Read a CSV file from disk, auto-infer options: SELECT * FROM 'flights.csv'; Use the read_csv function with custom options: SELECT * FROM read_csv('flights.csv', delim = '|', header =
...mn of type BOOL ) instead of throwing an error. Not available in the COPY statement. Added in DuckDB 2.0. BOOL false allow_quoted_nulls Allow the conversion of quoted values to NULL values BOOL true auto_detect Auto detect CSV parameters . BOOL true a...p . VARCHAR , delimiter Alias for delim ; only available in the COPY statement. VARCHAR , escape String used to escape the quote character within quoted values. VARCHAR " encoding Encoding used by the CSV file. Options are utf-8 , utf-16 , latin-1 . N...ed for specific columns with force_not_null . VARCHAR or VARCHAR[] (empty) parallel Use the parallel CSV reader. BOOL true quote String used to quote values. VARCHAR " rejects_scan Name of the temporary table where information on faulty scans is store... - https://man.mtool.work/duckdb/2.0/data/csv/overview.html
- Command Line Arguments 8854
- The table below summarizes DuckDB's command line options. To list all command line options, use the command: duckdb -help For a list of dot commands available in the CLI shell, see the Dot Commands page . Argument Description -agent Render
...din Exit after processing options instead of reading stdin -nullvalue TEXT Set text string for NULL values. Default: NULL -quote Set output mode to quote -readonly Open the database read-only. This option also supports attaching to remote databases vi... - https://man.mtool.work/duckdb/2.0/clients/cli/arguments.html
- COPY Statement 8664
- Examples Read a CSV file into the lineitem table, using auto-detected CSV options: COPY lineitem FROM 'lineitem.csv'; Read a CSV file into the lineitem table, using manually specified CSV options: COPY lineitem FROM 'lineitem.csv' (DELIMITE
...COPY lineitem FROM 'lineitem.json' (FORMAT json, AUTO_DETECT true); Read a CSV file into the lineitem table, using double quotes: COPY lineitem FROM "lineitem.csv"; Read a CSV file into the lineitem table, omitting quotes: COPY lineitem FROM lineitem...a CSV file: COPY lineitem TO 'lineitem.csv' (FORMAT csv, DELIMITER '|', HEADER); Write a table to a CSV file, using double quotes: COPY lineitem TO "lineitem.csv"; Write a table to a CSV file, omitting quotes: COPY lineitem TO lineitem.csv; Write the...eitem FROM 'lineitem.tbl' (DELIMITER '|'); Copy the contents of lineitem.tbl into the lineitem table, where the delimiter, quote character, and presence of a header are automatically detected: COPY lineitem FROM 'lineitem.tbl' (AUTO_DETECT true); Read... - https://man.mtool.work/duckdb/2.0/sql/statements/copy.html
- File Formats 8473
- Handling Parquet Files DuckDB has advanced support for Parquet files, which includes directly querying Parquet files . When deciding on whether to query these files directly or to first load them to the database, you need to consider severa
...line SELECT Prompt FROM sniff_csv('part-0001.csv'); Prompt = FROM read_csv('file_path.csv', auto_detect=false, delim=',', quote='"', escape='"', new_line='\n', skip=0, header=true, columns={'hello': 'BIGINT', 'world': 'VARCHAR'}); Then, you can adjus..., and run with the rest of the options detected by the sniffer: FROM read_csv('part-*.csv', auto_detect=false, delim=',', quote='"', escape='"', new_line='\n', skip=0, header=true, columns={'hello': 'BIGINT', 'world': 'VARCHAR'}); Reducing Storage Si... - https://man.mtool.work/duckdb/2.0/guides/performance/file_formats.html
- Keywords and Identifiers 8473
- Identifiers Similarly to other SQL dialects and programming languages, identifiers in DuckDB's SQL are subject to several rules. Unquoted identifiers need to conform to a number of rules: They must not be a reserved keyword (see duckdb_keyw
...SELECT 123 AS 1col is invalid. They cannot contain whitespaces (including tabs and newline characters). Identifiers can be quoted using double-quote characters ( " ). Quoted identifiers can use any keyword, whitespace or special character, e.g., "SELE...CT" and " § ? ¶ " are valid identifiers. Double quotes can be escaped by repeating the quote character, e.g., to create an identifier named IDENTIFIER "X" , use "IDENTIFIER ""X...""" . New As of DuckDB 2.0, identifiers can also be quoted using backtick characters ( ` ), following exactly the same rules as double-quoted identifiers. A backtick is escaped by... - https://man.mtool.work/duckdb/2.0/sql/dialect/keywords_and_identifiers.html
- Creating JSON 8300
- JSON Creation Functions The following functions are used to create JSON. Function Description to_json(any) Create JSON from a value of any type. Our LIST is converted to a JSON array, and our STRUCT and MAP are converted to a JSON object. j
...son_quote(any) Alias for to_json . array_to_json(list) Alias for to_json that only accepts LIST . row_to_json(list) Alias for to_jso... - https://man.mtool.work/duckdb/2.0/data/json/creating_json.html
- MySQL Extension 7919
- The mysql extension allows DuckDB to directly read and write data from/to a running MySQL instance. The data can be queried directly from the underlying MySQL database. Data can be loaded from MySQL tables into DuckDB tables, or vice versa.
...d MySQL database to execute the query in, as well as the SQL query to execute. The result of the query is returned. Single-quote strings are escaped by repeating the single quote twice. mysql_query(attached_database::VARCHAR, query::VARCHAR) For examp... - https://man.mtool.work/duckdb/2.0/core_extensions/mysql.html
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