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- SELECT Clause – DuckDB 12906
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...; Use prefix aliases: SELECT res : col1 + col2 , root : sqrt ( col1 ) FROM table_name ; Select all unique cities from the addresses table: SELECT DISTINCT city FROM addresses ; Return the total number of rows in the addresses table: SELECT count ( * ) FR...OM addresses ; Select all columns except the city column from the addresses table: SELECT * EXCLUDE ( city ) FROM addresses ; Select al...l columns from the addresses table, but replace city with lower(city) : SELECT * REPLACE ( lower ( city ) AS city ) FROM addresses ; Select all columns... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/select.html
- ORDER BY Clause – DuckDB 10209
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...information on collations, see the Collation page . Examples All examples use this example table: CREATE OR REPLACE TABLE addresses AS SELECT '123 Quack Blvd' AS address , 'DuckTown' AS city , '11111' AS zip UNION ALL SELECT '111 Duck Duck Goose Ln' , 'D...Duck Goose Ln' , 'Duck Town' , '11111' UNION ALL SELECT '111 Duck Duck Goose Ln' , 'Duck Town' , '11111-0001' ; Select the addresses, ordered by city name using the default NULL order and default order: SELECT * FROM addresses ORDER BY city ; Select the a...ddresses, ordered by city name in descending order with nulls at the end: SELECT * FROM addresses ORDER BY city DESC NULLS LAST ; Order by city and then by zip code, both using the default orderings: SELECT * FROM addres... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/orderby.html
- LIMIT and OFFSET Clauses – DuckDB 10066
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...ful, however, for example when you want to inspect a quick snapshot of the data. Examples Select the first 5 rows from the addresses table: SELECT * FROM addresses LIMIT 5 ; Select the 5 rows from the addresses table, starting at position 5 (i.e., ignorin...g the first 5 rows): SELECT * FROM addresses LIMIT 5 OFFSET 5 ; Select the top 5 cities with the highest population: SELECT city , count ( * ) AS population FROM addre...sses GROUP BY city ORDER BY population DESC LIMIT 5 ; Select 10% of the rows from the addresses table: SELECT * FROM addresses LIMIT 10 % ; Syntax 関連キーワード addresses rows clause first table population Syntax posi... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/limit.html
- SAMPLE Clause – DuckDB 9131
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...efore the WHERE clause or any aggregates). See the SAMPLE page for more information. Examples Select a sample of 1% of the addresses table using default (system) sampling: SELECT * FROM addresses USING SAMPLE 1 % ; Select a sample of 1% of the addresses t...able using bernoulli sampling: SELECT * FROM addresses USING SAMPLE 1 % ( bernoulli ); Select a sample of 10 rows from the subquery: SELECT * FROM ( SELECT * FROM addresses ) US...ING SAMPLE 10 ROWS ; Syntax 関連キーワード sample addresses clause table Syntax after using sampling bernoulli Documentation Query Copy Markdown Clause allows query base significantl... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/sample.html
- GROUP BY Clause – DuckDB 8933
- 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
...up along multiple dimensions. See the GROUPING SETS page for more information. Examples Count the number of entries in the addresses table that belong to each different city: SELECT city , count ( * ) FROM addresses GROUP BY city ; Compute the average inc...ome per city per street_name: SELECT city , street_name , avg ( income ) FROM addresses GROUP BY city , street_name ; GROUP BY ALL Examples Group by city and street_name to remove any duplicate values: SELECT c...ity , street_name FROM addresses GROUP BY ALL ; Compute the average income per city per street_name. Since income is wrapped in an aggregate function, do n... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/groupby.html
- HAVING Clause – DuckDB 8178
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...lause occurs before the grouping, the HAVING clause occurs after the grouping. Examples Count the number of entries in the addresses table that belong to each different city , filtering out cities with a count below 50: SELECT city , count ( * ) FROM addr...ng out cities with an average income bigger than twice the median income : SELECT city , street_name , avg ( income ) FROM addresses GROUP BY city , street_name HAVING avg ( income ) > 2 * median ( income ); Syntax 関連キーワード clause city income after...grouping addresses count street Syntax occurs filtering cities average median Documentation Query Copy Markdown Clause used provide filter cr... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/having.html
- inet Extension – DuckDB 7243
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...e Extensions Copy Markdown inet Extension The inet extension defines the INET data type for storing IPv4 and IPv6 Internet addresses. It supports the CIDR notation for subnet masks (e.g., 198.51.100.0/22 , 2001:db8:3c4d::/48 ). Installing and Loading The...a2f:1a2b Operations on INET Values INET values can be compared naturally, and IPv4 will sort before IPv6. Additionally, IP addresses can be modified by adding or subtracting integers. CREATE TABLE tbl ( cidr INET ); INSERT INTO tbl VALUES ( '127.0.0.1' ::...──┤ │ & │ └────────────────────────┘ 関連キーワード cidr ffff network inet subnet host netmask address broadcast extension addresses Computes Predicate equal escape varchar unescape Documentation Core Extensions Copy Markdown Extension defines type 関連す... - https://man.mtool.work/duckdb/1.3/core_extensions/inet.html
- GROUPING SETS – DuckDB 7172
- 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
...e syntax () denotes the empty set (i.e., computing an ungrouped aggregate) SELECT city , street_name , avg ( income ) FROM addresses GROUP BY GROUPING SETS (( city , street_name ), ( city ), ( street_name ), ()); Compute the average income along the same...dimensions: SELECT city , street_name , avg ( income ) FROM addresses GROUP BY CUBE ( city , street_name ); Compute the average income along the dimensions (city, street_name) , (city) and ()...: SELECT city , street_name , avg ( income ) FROM addresses GROUP BY ROLLUP ( city , street_name ); Description GROUPING SETS perform the same aggregate across different GROUP BY cla... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/grouping_sets.html
- SELECT Statement – DuckDB 6974
- 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
...es to select the first and third column from the table tbl : SELECT # 1 , # 3 FROM tbl ; Select all unique cities from the addresses table: SELECT DISTINCT city FROM addresses ; Return a STRUCT by using a row variable: SELECT d FROM ( SELECT 1 AS a , 2 AS... - https://man.mtool.work/duckdb/1.3/sql/statements/select.html
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