You can schedule and run the SQL statement using Amazon EventBridge and the Amazon Redshift Data API. The results are available for 24 hours after running the SQL statement. This helps you in a variety of scenarios, such as when you need to do the following: Run SQL queries during non-...
Cross-database queries Data sharing Semistructured data in Amazon Redshift Machine learning Query performance tuning Workload management Database security SQL reference Amazon Redshift SQL Using SQL SQL commands SQL functions reference Leader node–only functions Aggregate functions Array functions Bit-wise...
Amazon Redshift Spectrum HyperLogLog sketches Cross-database queries Data sharing Semistructured data in Amazon Redshift Machine learning Query performance tuning Workload management Database security SQL reference Amazon Redshift SQL SQL functions supported on the leader node ...
classMyQuestextendsQuestdatabases:["pg","hive"]adventure:->@sql"select 1"#will run on postgres/redshift@sqltext:"select 1",db:"hive"#will run on hive Namespacing If your helpers aren't going to be fairly uniquely named in some way, it's recommended that you namespace your helpers. ...
Additionally, we also demonstrate the support for IPython SqlMagic, which simplifies running interactive SQL queries directly from a Jupyter notebook. Prerequisites The following are the prerequisites for this post: An Amazon Redshift cluster. For more information, see Getting s...
As we’re using Redshift to do our queries, the following SQL example handles this: date_trunc('month', (timestamp 'epoch' + all_payments.payment_date * interval '1 Second ') ) Querying upgrades and downgrades between months The following SQL makes up the most complex in the entire...
mysql python bigquery parser postgres sql spark presto hive clickhouse sqlite snowflake optimizer transpiler redshift databricks tsql trino sqlparser duckdb Updated Dec 17, 2024 Python krasun / gosqlparser Star 67 Code Issues Pull requests Simple SQL parser go golang parser sql lexer go...
是指通过优化SQL查询语句和数据库结构,提高数据库查询性能和效率的一系列实践方法。以下是一些常见的SQL查询优化实践: 1. 索引优化:通过创建合适的索引,可以加快查询速度。索引可以根据查询条件和经...
我正在将以下T语句转换为Redshift。查询的目的是将表中包含逗号分隔字符串的值的列转换为多行,每行1值。 SELECT id_1 , id_2 , value into dbo.myResultsTable FROM myTable CROSS APPLY STRING_SPLIT([comma_delimited_string], ',') WHERE [comma_delimited_string] is not null; 在SQL中,这将...
Only relevant fields from the custom SQL query display in the data grid on the Data Source page. For more information about the logical and physical layers of the canvas, see The Tableau Data Model. Examples of custom SQL queries Combine your tables vertically (union) If you need to append...