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CSV Auto Detection – DuckDB 11903
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... _file.csv' ); FROM sniff_csv ( 'my_file.csv' , sample_size = 1000 ); Column name Description Example Delimiter Delimiter , Quote Quote character " Escape Escape \ NewLineDelimiter New-line delimiter \r\n Comment Comment character # SkipRows Number of ... e 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/1.3/data/csv/auto_detection.html
Reading Faulty CSV Files – DuckDB 11675
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... 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/1.3/data/csv/reading_faulty_csv_files.html
Describe – DuckDB 11675
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... 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 ... LL bool_enterprise_saved_the_day BIGINT YES NULL NULL NULL 関連キーワード column table Describing type default extra fired quote order view schema statement query description example aliens almost took over enterprise warp speed phasers ship Documenta ...
https://man.mtool.work/duckdb/1.3/guides/meta/describe.html
CSV Import – DuckDB 9592
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... tion and assume all columns are of type VARCHAR . This option is only supported by the read_csv function. 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 ... or null Strings that represent a NULL value. 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/1.3/data/csv/overview.html
COPY Statement – DuckDB 9137
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... PY 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 lineite ... V 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 th ... tem 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 ); Re ...
https://man.mtool.work/duckdb/1.3/sql/statements/copy.html
Command Line Arguments – DuckDB 8682
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... 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/1.3/clients/cli/arguments.html
Keywords and Identifiers – DuckDB 8209
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... ers 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_keywords() ), e.g., SEL ... 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 ...
https://man.mtool.work/duckdb/1.3/sql/dialect/keywords_and_identifiers.html
File Formats – DuckDB 7982
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... ne 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 ... n 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' } ...
https://man.mtool.work/duckdb/1.3/guides/performance/file_formats.html
MySQL Extension – DuckDB 7754
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... 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 ) F ...
https://man.mtool.work/duckdb/1.3/core_extensions/mysql.html
PostgreSQL Extension – DuckDB 7754
This page is for DuckDB 1.3, which is outdated. Switch to the current documentation . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Ove ... tgreSQL 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. postgres_query ( attached_database :: VARCHAR , query :: VARCHAR ...
https://man.mtool.work/duckdb/1.3/core_extensions/postgres.html
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