Client libraries
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BigQuery client libraries
Get started with BigQuery in your language of choice.
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BigQuery Python client library migration guide
Migration guide to the latest version of the Python client library from older versions.
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`pandas-gbq` to BigQuery Python client library migration guide
Guide for migrating code from `pandas-gbq` to the Python client library, `google-cloud-bigquery`.
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Migrating from the `datalab` Python package
Guide for migrating code from the `datalab` Python package to the BigQuery}} Python client library.
BigQuery Connections API
bq command-line tool reference
Standard SQL reference
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Switching SQL dialects
How to enable standard SQL when querying data.
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Standard SQL data types
Data types supported by standard SQL.
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Standard SQL query syntax
Syntax for standard SQL query statements.
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Standard SQL functions and operators
The complete reference for standard SQL expressions, including functions and operators.
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Working with arrays in standard SQL
How to use arrays in standard SQL.
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Standard SQL lexical structure
An explanation of the tokens available in standard SQL statements.
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User-defined functions in standard SQL
How to create a user-defined function in standard SQL.
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Approximate aggregation in standard SQL
How to estimate aggregate results efficiently with approximate aggregation in standard SQL.
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Wildcard tables in standard SQL
How to query multiple tables using a wildcard in standard SQL.
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Data Manipulation Language in standard SQL
How to use the Data Manipulation Language (DML) to update, insert, and delete data in BigQuery.
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DML syntax in standard SQL
Data Manipulation Language (DML) syntax reference.
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Data Definition Language in standard SQL
How to use the Data Definition Language (DDL) to modify BigQuery resources using standard SQL query syntax.
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Scripting in standard SQL
How to write scripts using standard SQL query syntax.
Legacy SQL reference
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Legacy SQL functions and operators
The complete reference for BigQuery's legacy SQL query syntax and functions.
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Legacy SQL data types
Data types supported by legacy SQL.
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Querying nested and repeated fields in legacy SQL
How to query nested and repeated fields in BigQuery using legacy SQL.
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User-defined functions in legacy SQL
Using JavaScript user-defined functions in legacy SQL.
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Table decorators in legacy SQL
How to query a subset of your data using legacy SQL table decorators.
