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Results of 1 - 4 of about 4 for coalesce (0.002 sec.)

NULL Values – DuckDB 11964: This page is for DuckDB 1.3, which is outdated.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 ... ; true NULL and Functions A function that has input argument as NULL usually returns NULL . SELECT cos ( NULL ); NULL The coalesce function is an exception to this: it takes any number of arguments, and returns for each row the first argument that is no ... t NULL . If all arguments are NULL , coalesce also returns NULL . SELECT coalesce ( NULL , NULL , 1 ); 1 SELECT coalesce ( 10 , 20 ); 10 SELECT coalesce ( NULL , NULL ) ... ; NULL The ifnull function is a two-argument version of coalesce . SELECT ifnull ( NULL , 'default_string' ); default_string SELECT ifnull ( 1 , 'default_string' ); 1 NULL and AND / OR NU ...; https://man.mtool.work/duckdb/1.3/sql/data_types/nulls.html

Star Expression – DuckDB 9505: This page is for DuckDB 1.3, which is outdated.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 ... nds into the parent expression. An example that shows this difference between COLUMNS and *COLUMNS : With COLUMNS : SELECT coalesce ( COLUMNS ([ 'a' , 'b' , 'c' ])) AS result FROM ( SELECT NULL a , 42 b , true c ); result result result NULL 42 true With ... *COLUMNS , the expression expands in its parent expression coalesce , resulting in a single result column: SELECT coalesce ( * COLUMNS ([ 'a' , 'b' , 'c' ])) AS result FROM ( SELECT NULL AS ... a , 42 AS b , true AS c ); result 42 *COLUMNS also works with the (*) argument: SELECT coalesce ( * COLUMNS ( * )) AS result FROM ( SELECT NULL a , 42 AS b , true AS c ); result 42 STRUCT.* The * expression can also be ...; https://man.mtool.work/duckdb/1.3/sql/expressions/star.html

Utility Functions – DuckDB 8654: This page is for DuckDB 1.3, which is outdated.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 ... he target value. checkpoint(database) Synchronize WAL with file for (optional) database without interrupting transactions. coalesce(expr, ...) Return the first expression that evaluates to a non- NULL value. Accepts 1 or more parameters. Each expression ... en the ICU extension is installed. if(a, b, c) Ternary conditional operator. ifnull(expr, other) A two-argument version of coalesce. is_histogram_other_bin(arg) Returns true when arg is the "catch-all element" of its datatype for the purpose of the histo ... WAL with file for (optional) database without interrupting transactions. Example checkpoint(my_db) Result success Boolean coalesce(expr, ...) Description Return the first expression that evaluates to a non- NULL value. Accepts 1 or more parameters. Each ...; https://man.mtool.work/duckdb/1.3/sql/functions/utility.html

Lambda Functions – DuckDB 6823: 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 ... , GooseDB, SparrowDB] Combining lambda functions with other functions: SELECT list_transform ([ 5 , NULL , 6 ], lambda x : coalesce ( x , 0 ) + 1 ); [6, 1, 7] list_filter Examples Filter out negative values: SELECT list_filter ([ 5 , -6 , NULL , 7 ], lam ...; https://man.mtool.work/duckdb/1.3/sql/functions/lambda.html

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