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- Node.js API – DuckDB 12486
- This page is for DuckDB 1.3, which is outdated.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
...PError : object duckdb Summary : DuckDB is an embeddable SQL OLAP Database Management System duckdb ~Connection .run(sql, …params, callback) ⇒ void .all(sql, …params, callback) ⇒ void .arrowIPCAll(sql, …params, callback) ⇒ void .arrowIPCStream(sql, …p...arams, callback) ⇒ .each(sql, …params, callback) ⇒ void .stream(sql, …params) .register_udf(name, return_type, fun) ⇒ void .prepare(sql, …params, callback) ⇒ S...tatement .exec(sql, …params, callback) ⇒ void .register_udf_bulk(name, return_type, callback) ⇒ void .unregister_udf(name, return_type, callback) ⇒ v... - https://man.mtool.work/duckdb/1.3/clients/nodejs/reference.html
- Complete API – DuckDB 10505
- This page is for DuckDB 1.3, which is outdated.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
...* prepared_statement ); const char * duckdb_prepare_error ( duckdb_prepared_statement prepared_statement ); idx_t duckdb_nparams ( duckdb_prepared_statement prepared_statement ); const char * duckdb_parameter_name ( duckdb_prepared_statement prepared..._statement , idx_t index ); duckdb_type duckdb_param_type ( duckdb_prepared_statement prepared_statement , idx_t param_idx ); duckdb_logical_type duckdb_param_logical_type ( d...uckdb_prepared_statement prepared_statement , idx_t param_idx ); duckdb_state duckdb_clear_bindings ( duckdb_prepared_statement prepared_statement ); duckdb_statement_type duckdb_p... - https://man.mtool.work/duckdb/1.3/clients/c/api.html
- Prepared Statements – DuckDB 9887
- This page is for DuckDB 1.3, which is outdated.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
...Format Pivot Sitemap Live Demo Documentation / Client APIs / C Copy Markdown Prepared Statements A prepared statement is a parameterized query. The query is prepared with question marks ( ? ) or dollar symbols ( $1 ) indicating the parameters of the q...uery. Values can then be bound to these parameters, after which the prepared statement can be executed using those parameters. A single query can be prepared once and e...xecuted many times. Prepared statements are useful to: Easily supply parameters to functions while avoiding string concatenation/SQL injection attacks. Speeding up queries that will be executed man... - https://man.mtool.work/duckdb/1.3/clients/c/prepared.html
- Python DB API – DuckDB 8488
- 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
...upports prepared statements in the API with the execute and executemany methods. The values may be passed as an additional parameter after a query that contains ? or $1 (dollar symbol and a number) placeholders. Using the ? notation adds the values in...the same sequence as passed within the Python parameter. Using the $ notation allows for values to be reused within the SQL statement based on the number and index of the val...ue found within the Python parameter. Values are converted according to the conversion rules . Here are some examples. First, insert a row using a prepared... - https://man.mtool.work/duckdb/1.3/clients/python/dbapi.html
- Lambda Functions – DuckDB 7488
- 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
...ble expressions in queries. DuckDB supports several scalar functions that operate on LIST s and accept lambda functions as parameters in the form lambda parameter1 , parameter2 , ... : expression . If the lambda function has only one parameter, then t...he parentheses can be omitted. The parameters can have any names. For example, the following are all valid lambda functions: lambda param : param > 1 lambda s : co...a , b : a + b ) + x ); [16, 17, 18] Scoping Lambda functions confirm to scoping rules in the following order: inner lambda parameters outer lambda parameters column names macro parameters CREATE TABLE tbl ( x INTEGER ); INSERT INTO tbl VALUES ( 10 );... - https://man.mtool.work/duckdb/1.3/sql/functions/lambda.html
- Prepared Statements – DuckDB 7379
- 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
...p Live Demo Documentation / SQL / Query Syntax Copy Markdown Prepared Statements DuckDB supports prepared statements where parameters are substituted when the query is executed. This can improve readability and is useful for preventing SQL injections.... Syntax There are three syntaxes for denoting parameters in prepared statements: auto-incremented ( ? ), positional ( $1 ), and named ( $param ). Note that not all clients su...pport all of these syntaxes, e.g., the JDBC client only supports auto-incremented parameters in prepared statements. Example Data Set In the following, we introduce the three different syntaxes and illustrate t... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/prepared_statements.html
- SQL to/from JSON – DuckDB 7343
- 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
...Pragma version of the json_execute_serialized_sql function. The json_serialize_sql(varchar) function takes three optional parameters, skip_empty , skip_null , and format that can be used to control the output of the serialized statements. If you run...xpressions":[],"group_sets":[],"aggregate_handling":"STANDARD_HANDLING","having":null,"sample":null,"qualify":null},"named_param_map":[]}]} Example with multiple statements and skip options: SELECT json_serialize_sql ( 'SELECT 1 + 2; SELECT a + b FROM... - https://man.mtool.work/duckdb/1.3/data/json/sql_to_and_from_json.html
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