Hologres V0.10版本开始,支持使用CREATE TABLE LIKE语句复制表结构和表属性(主键、索引等),但需要执行以下命令设置GUC。开启GUC后,CREATE TABLE LIKE只支持通过SELECT * FROM <table_name>复制表,不支持其他写法,如SELECT <column_1>, <column_2> FROM <table_name>。 set hg_experimental_enable_create_table_li...
For example, if you filter on rows with Id 1.x, the Exclusive Duration percentages would sum to approximately 100%. This isn't the case if you sum the Exclusive Duration % values of all rows in a given diagnostic table. Exclusive duration The absolute time, rather than %, of exclusive ...
The Microsoft Database Engine Tuning Advisor (DTA) analyzes databases and makes recommendations that you use to optimize query performance. You use the Database Engine Tuning Advisor to select and create an optimal set of indexes, indexed views, or table partitions without having an expert understan...
First, we’ll insert the data to transpose into thePower Query Editor. Go toData➤From Table/Range. TheCreate Tabledialog box will open. Insert thetable rangeand clickOK. ThePower Query Editorwill automatically pull the data table into it, like in this image: ...
By default sqoop will use queryselect min(<split-by>), max(<split-by>) from <table name>to find out boundaries for creating splits. In some cases this query is not the most optimal so you can specify any arbitrary query returning two numeric columns using--boundary-queryargument....
COLUMN Use with ADD, ALTER, or DROP CONSTRAINT Use with ADD, ALTER, or DROP INDEX Use with CREATE TABLE Use with ALTER, CREATE, or DROP Top of Page Create or modify a table To create a table, you use a CREATE TABLE command. A CREATE TABLE command...
FROM Table1 UNION ALL SELECT Table1.Season ID AS Season ID, Table1.Items - Too small AS [Quantity] "Too Small" AS [Reason] FROM Table1 The result of the query looks like this in the data grid: For more information about the pivot option, see Pivot Data from Columns to Rows. ...
MDX is the query language for cubes. Behind the scenes, Excel uses MDX to retrieve fields and data values when you choose items from a PivotTable Fields list. You can also build MDX queries manually when importing data from an Analysis Services cube. ...
Look at the steps in the query to see if any of them are trying to perform an operation on a single value, but the value is missing. If so, you can try to fill in the missing value or remove the step from the query. If you are still unable to resolve the error, you can try ...
After that operation is complete, notice how the Products column has [Table] values inside each cell. Each [Table] value contains all the rows that were grouped by the Country and Sales Channel columns from your original table. You can select the white space inside the cell to see a previe...