Merge pull request #185050 from jovanpop-msft/patch-232

Changed temp tables

Author: PRMerger4

articles/synapse-analytics/sql/overview-features.md

@@ -26,12 +26,12 @@ Consumption models in Synapse SQL enable you to use different database objects.
 | **Tables** | [Yes](/sql/t-sql/statements/create-table-azure-sql-data-warehouse?view=azure-sqldw-latest&preserve-view=true) | No, the in-database tables are not supported. Serverless SQL pool can query only [external tables](develop-tables-external-tables.md?tabs=native) that reference data placed on [Azure Storage](#storage-options) |
 | **Views** | [Yes](/sql/t-sql/statements/create-view-transact-sql?view=azure-sqldw-latest&preserve-view=true). Views can use [query language elements](#query-language) that are available in dedicated model. | [Yes](/sql/t-sql/statements/create-view-transact-sql?view=azure-sqldw-latest&preserve-view=true), you can create views over [external tables](develop-tables-external-tables.md?tabs=native) and other views. Views can use [query language elements](#query-language) that are available in serverless model. |
 | **Schemas** | [Yes](/sql/t-sql/statements/create-schema-transact-sql?view=azure-sqldw-latest&preserve-view=true) | [Yes](/sql/t-sql/statements/create-schema-transact-sql?view=azure-sqldw-latest&preserve-view=true), schemas are supported. |
-| **Temporary tables** | [Yes](../sql-data-warehouse/sql-data-warehouse-tables-temporary.md?context=/azure/synapse-analytics/context/context) | No, temporary tables might be used just to store some information from system views. |
-| **User defined procedures** | [Yes](/sql/t-sql/statements/create-procedure-transact-sql?view=azure-sqldw-latest&preserve-view=true) | Yes, stored procedures can be placed in any user databases (not `master` database). |
+| **Temporary tables** | [Yes](../sql-data-warehouse/sql-data-warehouse-tables-temporary.md?context=/azure/synapse-analytics/context/context) | Temporary tables might be used just to store some information from the system views, literals, or other temp tables. UPDATE/DELETE on temp table is also supported. You can join temp tables with the system views.  You cannot select data from an external table to insert it into temp table or join temp table with external table - these operations will fail because external data and temp-tables cannot be mixed in the same query. |
+| **User defined procedures** | [Yes](/sql/t-sql/statements/create-procedure-transact-sql?view=azure-sqldw-latest&preserve-view=true) | Yes, stored procedures can be placed in any user databases (not `master` database). Procedures can just read external data and use [query language elements](#query-language) that are available in serverless pool. |
 | **User defined functions** | [Yes](/sql/t-sql/statements/create-function-sql-data-warehouse?view=azure-sqldw-latest&preserve-view=true) | Yes, only inline table-valued functions. Scalar user-defined functions are not supported. |
 | **Triggers** | No | No, serverless SQL pools do not allow changing data, so the triggers cannot react on data changes. |
-| **External tables** | [Yes](/sql/t-sql/statements/create-external-table-transact-sql?view=azure-sqldw-latest&preserve-view=true). See supported [data formats](#data-formats). | [Yes](/sql/t-sql/statements/create-external-table-transact-sql?view=azure-sqldw-latest&preserve-view=true). See the supported [data formats](#data-formats). |
-| **Caching queries** | Yes, multiple forms (SSD-based caching, in-memory, resultset caching). In addition, Materialized View are supported | No. Only file statistics are cached. |
+| **External tables** | [Yes](/sql/t-sql/statements/create-external-table-transact-sql?view=azure-sqldw-latest&preserve-view=true). See supported [data formats](#data-formats). | Yes, [external tables](/sql/t-sql/statements/create-external-table-transact-sql?view=azure-sqldw-latest&preserve-view=true) are available. See the supported [data formats](#data-formats). |
+| **Caching queries** | Yes, multiple forms (SSD-based caching, in-memory, resultset caching). In addition, Materialized View are supported | No, only the file statistics are cached. |
 | **Table variables** | [No](/sql/t-sql/data-types/table-transact-sql?view=azure-sqldw-latest&preserve-view=true), use temporary tables | No, table variables are not supported. |
 | **[Table distribution](../sql-data-warehouse/sql-data-warehouse-tables-distribute.md?context=/azure/synapse-analytics/context/context)**               | Yes | No, table distributions are not supported. |
 | **[Table indexes](../sql-data-warehouse/sql-data-warehouse-tables-index.md?context=/azure/synapse-analytics/context/context)**                           | Yes | No, indexes are not supported. |
@@ -46,22 +46,22 @@ Query languages used in Synapse SQL can have different supported features depend
 
 |   | Dedicated | Serverless |
 | --- | --- | --- |
-| **SELECT statement** | Yes. Transact-SQL query clauses [FOR XML/FOR JSON](/sql/t-sql/queries/select-for-clause-transact-sql?view=azure-sqldw-latest&preserve-view=true), [MATCH](/sql/t-sql/queries/match-sql-graph?view=azure-sqldw-latest&preserve-view=true), OFFSET/FETCH  are not supported. | Yes, but some Transact-SQL query clauses like [FOR XML](/sql/t-sql/queries/select-for-clause-transact-sql?view=azure-sqldw-latest&preserve-view=true), [MATCH](/sql/t-sql/queries/match-sql-graph?view=azure-sqldw-latest&preserve-view=true), [PREDICT](/sql/t-sql/queries/predict-transact-sql?view=azure-sqldw-latest&preserve-view=true), GROUPNG SETS, and query hints are not supported. |
+| **SELECT statement** | Yes. `SELECT` statement is support, but some Transact-SQL query clauses, such as [FOR XML/FOR JSON](/sql/t-sql/queries/select-for-clause-transact-sql?view=azure-sqldw-latest&preserve-view=true), [MATCH](/sql/t-sql/queries/match-sql-graph?view=azure-sqldw-latest&preserve-view=true), OFFSET/FETCH  are not supported. | Yes, but some Transact-SQL query clauses like [FOR XML](/sql/t-sql/queries/select-for-clause-transact-sql?view=azure-sqldw-latest&preserve-view=true), [MATCH](/sql/t-sql/queries/match-sql-graph?view=azure-sqldw-latest&preserve-view=true), [PREDICT](/sql/t-sql/queries/predict-transact-sql?view=azure-sqldw-latest&preserve-view=true), GROUPNG SETS, and query hints are not supported. |
 | **INSERT statement** | Yes | No, upload new data to Data lake using Spark or other tools. Use Cosmos DB with the analytical storage for highly transactional workloads. |
-| **UPDATE statement** | Yes | No, but Parquet/CSV data updated using Spark is automatically available in serverless pool. Use Cosmos DB with the analytical storage for highly transactional workloads. |
-| **DELETE statement** | Yes | No, but Parquet/CSV data deleted using Spark is automatically available in serverless pool. Use Cosmos DB with the analytical storage for highly transactional workloads.|
-| **MERGE statement** | Yes ([preview](/sql/t-sql/statements/merge-transact-sql?view=azure-sqldw-latest&preserve-view=true)) | No, but Parquet/CSV data merged using Spark is automatically available in serverless pool. |
+| **UPDATE statement** | Yes | No, update Parquet/CSV data using Spark and the changes will be automatically available in serverless pool. Use Cosmos DB with the analytical storage for highly transactional workloads. |
+| **DELETE statement** | Yes | No, delete Parquet/CSV data using Spark and the changes will be automatically available in serverless pool. Use Cosmos DB with the analytical storage for highly transactional workloads.|
+| **MERGE statement** | Yes ([preview](/sql/t-sql/statements/merge-transact-sql?view=azure-sqldw-latest&preserve-view=true)) | No, merge Parquet/CSV data using Spark and the changes will be automatically available in serverless pool. |
 | **[Transactions](develop-transactions.md)** | Yes | Yes, applicable only on the meta-data objects. |
 | **[Labels](develop-label.md)** | Yes | No |
 | **Data load** | Yes. Preferred utility is [COPY](/sql/t-sql/statements/copy-into-transact-sql?view=azure-sqldw-latest&preserve-view=true) statement, but the system supports both BULK load (BCP) and [CETAS](/sql/t-sql/statements/create-external-table-as-select-transact-sql?view=azure-sqldw-latest&preserve-view=true) for data loading. | No, you can initially load data into an external table using CETAS statement. |
 | **Data export** | Yes. Using [CETAS](/sql/t-sql/statements/create-external-table-as-select-transact-sql?view=azure-sqldw-latest&preserve-view=true). | Yes. Using [CETAS](/sql/t-sql/statements/create-external-table-as-select-transact-sql?view=azure-sqldw-latest&preserve-view=true). |
-| **Types** | Yes, all Transact-SQL types except [cursor](/sql/t-sql/data-types/cursor-transact-sql?view=azure-sqldw-latest&preserve-view=true), [hierarchyid](/sql/t-sql/data-types/hierarchyid-data-type-method-reference?view=azure-sqldw-latest&preserve-view=true), [ntext, text, and image](/sql/t-sql/data-types/ntext-text-and-image-transact-sql?view=azure-sqldw-latest&preserve-view=true), [rowversion](/sql/t-sql/data-types/rowversion-transact-sql?view=azure-sqldw-latest&preserve-view=true), [Spatial Types](/sql/t-sql/spatial-geometry/spatial-types-geometry-transact-sql?view=azure-sqldw-latest&preserve-view=true), [sql\_variant](/sql/t-sql/data-types/sql-variant-transact-sql?view=azure-sqldw-latest&preserve-view=true), and [xml](/sql/t-sql/xml/xml-transact-sql?view=azure-sqldw-latest&preserve-view=true) | Yes, all Transact-SQL types except [cursor](/sql/t-sql/data-types/cursor-transact-sql?view=azure-sqldw-latest&preserve-view=true), [hierarchyid](/sql/t-sql/data-types/hierarchyid-data-type-method-reference?view=azure-sqldw-latest&preserve-view=true), [ntext, text, and image](/sql/t-sql/data-types/ntext-text-and-image-transact-sql?view=azure-sqldw-latest&preserve-view=true), [rowversion](/sql/t-sql/data-types/rowversion-transact-sql?view=azure-sqldw-latest&preserve-view=true), [Spatial Types](/sql/t-sql/spatial-geometry/spatial-types-geometry-transact-sql?view=azure-sqldw-latest&preserve-view=true), [sql\_variant](/sql/t-sql/data-types/sql-variant-transact-sql?view=azure-sqldw-latest&preserve-view=true), [xml](/sql/t-sql/xml/xml-transact-sql?view=azure-sqldw-latest&preserve-view=true), and Table type. See how to [map Parquet column types to SQL types here](develop-openrowset.md#type-mapping-for-parquet). |
+| **Types** | Yes, all Transact-SQL types except [cursor](/sql/t-sql/data-types/cursor-transact-sql?view=azure-sqldw-latest&preserve-view=true), [hierarchyid](/sql/t-sql/data-types/hierarchyid-data-type-method-reference?view=azure-sqldw-latest&preserve-view=true), [ntext, text, and image](/sql/t-sql/data-types/ntext-text-and-image-transact-sql?view=azure-sqldw-latest&preserve-view=true), [rowversion](/sql/t-sql/data-types/rowversion-transact-sql?view=azure-sqldw-latest&preserve-view=true), [Spatial Types](/sql/t-sql/spatial-geometry/spatial-types-geometry-transact-sql?view=azure-sqldw-latest&preserve-view=true), [sql\_variant](/sql/t-sql/data-types/sql-variant-transact-sql?view=azure-sqldw-latest&preserve-view=true), and [xml](/sql/t-sql/xml/xml-transact-sql?view=azure-sqldw-latest&preserve-view=true) | Yes, all Transact-SQL types are supported, except [cursor](/sql/t-sql/data-types/cursor-transact-sql?view=azure-sqldw-latest&preserve-view=true), [hierarchyid](/sql/t-sql/data-types/hierarchyid-data-type-method-reference?view=azure-sqldw-latest&preserve-view=true), [ntext, text, and image](/sql/t-sql/data-types/ntext-text-and-image-transact-sql?view=azure-sqldw-latest&preserve-view=true), [rowversion](/sql/t-sql/data-types/rowversion-transact-sql?view=azure-sqldw-latest&preserve-view=true), [Spatial Types](/sql/t-sql/spatial-geometry/spatial-types-geometry-transact-sql?view=azure-sqldw-latest&preserve-view=true), [sql\_variant](/sql/t-sql/data-types/sql-variant-transact-sql?view=azure-sqldw-latest&preserve-view=true), [xml](/sql/t-sql/xml/xml-transact-sql?view=azure-sqldw-latest&preserve-view=true), and Table type. See how to [map Parquet column types to SQL types here](develop-openrowset.md#type-mapping-for-parquet). |
 | **Cross-database queries** | No | Yes, 3-part-name references are supported including [USE](/sql/t-sql/language-elements/use-transact-sql?view=azure-sqldw-latest&preserve-view=true) statement. The queries can reference the serverless SQL databases or the Lake databases in the same workspace. |
 | **Built-in/system functions (analysis)** | Yes, all Transact-SQL [Analytic](/sql/t-sql/functions/analytic-functions-transact-sql?view=azure-sqldw-latest&preserve-view=true), Conversion, [Date and Time](/sql/t-sql/functions/date-and-time-data-types-and-functions-transact-sql?view=azure-sqldw-latest&preserve-view=true), Logical, [Mathematical](/sql/t-sql/functions/mathematical-functions-transact-sql?view=azure-sqldw-latest&preserve-view=true) functions, except [CHOOSE](/sql/t-sql/functions/logical-functions-choose-transact-sql?view=azure-sqldw-latest&preserve-view=true) and [PARSE](/sql/t-sql/functions/parse-transact-sql?view=azure-sqldw-latest&preserve-view=true) | Yes, all Transact-SQL [Analytic](/sql/t-sql/functions/analytic-functions-transact-sql?view=azure-sqldw-latest&preserve-view=true), Conversion, [Date and Time](/sql/t-sql/functions/date-and-time-data-types-and-functions-transact-sql?view=azure-sqldw-latest&preserve-view=true), Logical, [Mathematical](/sql/t-sql/functions/mathematical-functions-transact-sql?view=azure-sqldw-latest&preserve-view=true) functions. |
 | **Built-in/system functions ([string](/sql/t-sql/functions/string-functions-transact-sql))** | Yes. All Transact-SQL [String](/sql/t-sql/functions/string-functions-transact-sql?view=azure-sqldw-latest&preserve-view=true), [JSON](/sql/t-sql/functions/json-functions-transact-sql?view=azure-sqldw-latest&preserve-view=true), and Collation functions, except [STRING_ESCAPE](/sql/t-sql/functions/string-escape-transact-sql?view=azure-sqldw-latest&preserve-view=true) and [TRANSLATE](/sql/t-sql/functions/translate-transact-sql?view=azure-sqldw-latest&preserve-view=true) | Yes. All Transact-SQL [String](/sql/t-sql/functions/string-functions-transact-sql?view=azure-sqldw-latest&preserve-view=true), [JSON](/sql/t-sql/functions/json-functions-transact-sql?view=azure-sqldw-latest&preserve-view=true), and Collation functions. |
 | **Built-in/system functions ([Cryptographic](/sql/t-sql/functions/cryptographic-functions-transact-sql))** | Some | `HASHBYTES` is the only supported cryptographic function in serverless SQL pools. |
 | **Built-in/system table-value functions** | Yes, [Transact-SQL Rowset functions](/sql/t-sql/functions/functions?view=azure-sqldw-latest&preserve-view=true#rowset-functions), except [OPENXML](/sql/t-sql/functions/openxml-transact-sql?view=azure-sqldw-latest&preserve-view=true), [OPENDATASOURCE](/sql/t-sql/functions/opendatasource-transact-sql?view=azure-sqldw-latest&preserve-view=true), [OPENQUERY](/sql/t-sql/functions/openquery-transact-sql?view=azure-sqldw-latest&preserve-view=true), and [OPENROWSET](/sql/t-sql/functions/openrowset-transact-sql?view=azure-sqldw-latest&preserve-view=true) | Yes, [Transact-SQL Rowset functions](/sql/t-sql/functions/functions?view=azure-sqldw-latest&preserve-view=true#rowset-functions), except [OPENXML](/sql/t-sql/functions/openxml-transact-sql?view=azure-sqldw-latest&preserve-view=true), [OPENDATASOURCE](/sql/t-sql/functions/opendatasource-transact-sql?view=azure-sqldw-latest&preserve-view=true), and [OPENQUERY](/sql/t-sql/functions/openquery-transact-sql?view=azure-sqldw-latest&preserve-view=true)  |
-| **Built-in/system aggregates** |  Transact-SQL built-in aggregates except, except [CHECKSUM_AGG](/sql/t-sql/functions/checksum-agg-transact-sql?view=azure-sqldw-latest&preserve-view=true) and [GROUPING_ID](/sql/t-sql/functions/grouping-id-transact-sql?view=azure-sqldw-latest&preserve-view=true) | All Transact-SQL built-in [aggregates](/sql/t-sql/functions/aggregate-functions-transact-sql?view=sql-server-ver15) are supported. |
+| **Built-in/system aggregates** |  Transact-SQL built-in aggregates except, except [CHECKSUM_AGG](/sql/t-sql/functions/checksum-agg-transact-sql?view=azure-sqldw-latest&preserve-view=true) and [GROUPING_ID](/sql/t-sql/functions/grouping-id-transact-sql?view=azure-sqldw-latest&preserve-view=true) | Yes, all Transact-SQL built-in [aggregates](/sql/t-sql/functions/aggregate-functions-transact-sql?view=sql-server-ver15) are supported. |
 | **Operators** | Yes, all [Transact-SQL operators](/sql/t-sql/language-elements/operators-transact-sql?view=azure-sqldw-latest&preserve-view=true) except [!>](/sql/t-sql/language-elements/not-greater-than-transact-sql?view=azure-sqldw-latest&preserve-view=true) and [!<](/sql/t-sql/language-elements/not-less-than-transact-sql?view=azure-sqldw-latest&preserve-view=true) | Yes, all [Transact-SQL operators](/sql/t-sql/language-elements/operators-transact-sql?view=azure-sqldw-latest&preserve-view=true)  |
 | **Control of flow** | Yes. All [Transact-SQL Control-of-flow statement](/sql/t-sql/language-elements/control-of-flow?view=azure-sqldw-latest&preserve-view=true) except [CONTINUE](/sql/t-sql/language-elements/continue-transact-sql?view=azure-sqldw-latest&preserve-view=true), [GOTO](/sql/t-sql/language-elements/goto-transact-sql?view=azure-sqldw-latest&preserve-view=true), [RETURN](/sql/t-sql/language-elements/return-transact-sql?view=azure-sqldw-latest&preserve-view=true), [USE](/sql/t-sql/language-elements/use-transact-sql?view=azure-sqldw-latest&preserve-view=true), and [WAITFOR](/sql/t-sql/language-elements/waitfor-transact-sql?view=azure-sqldw-latest&preserve-view=true) | Yes. All [Transact-SQL Control-of-flow statement](/sql/t-sql/language-elements/control-of-flow?view=azure-sqldw-latest&preserve-view=true) SELECT query in `WHILE (...)` condition |
 | **DDL statements (CREATE, ALTER, DROP)** | Yes. All Transact-SQL DDL statement applicable to the supported object types | Yes. All Transact-SQL DDL statement applicable to the supported object types |