How long are the strings in each column returned? Systems might have very small default and benefit from tuning. For example: Oracle’s defaultfetchSizeis 10. Increasing it to 100 reduces the number of total queries that need to be executed by a factor of 10. JDBC results are network traff...
How long are the strings in each column returned? Systems might have very small default and benefit from tuning. For example: Oracle’s defaultfetchSizeis 10. Increasing it to 100 reduces the number of total queries that need to be executed by a factor of 10. JDBC results are network traff...
This means that in most cases, you can type the SQL syntax that you are familiar with. If, however, you use functions that are specific to one database server (e.g., Oracle), when you run the query on a different database server (e.g., SQL Server), an error appears, and you ...
If the columns must stay in the one table for some reason, create a model with Meta.managed = False (see the managed attribute documentation) containing just the fields you normally need to load and use that where you might otherwise call defer(). This makes your code more explicit to ...
This chapter describes ways to improve Oracle Business Intelligence query performance, including a performance tuning overview and information about monitoring system metrics.
About Supported Column Types Adding an Object to the Design Pane Removing or Hiding Objects in the Design Pane See Also: "Creating Relationships Between Objects" About Supported Column Types Columns of all types available in Oracle Database 10g Release (10.2) display as objects in the Design...
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Now that the Query Plan tool is enabled, you can use it to evaluate queries. Let’s start by using it to evaluate a poorly performing query. In Developer Console, click the Query Editor tab in the bottom pane. Delete the existing code, and insert the following snippet: SELECT Id, Case...
SQL statements are case-insensitive, meaning they can be written using lowercase, uppercase or a combination. However, it is customary to write out SQL keywords -- commands or control operators -- in all-caps and table/column names in lowercase. Words in the statement can be treated as case...
#"Changed Type" = Table.TransformColumnTypes(#"Renamed Columns",{{"Datewithtime", type datetimezone}}), #"Timezone Shifted" = Table.TransformColumns(#"Changed Type", {"Datewithtime", DateTimeZone.ToLocal}) 첫 번째 작업은 형식을 datetimezone변경하고 두 번째 ...