Data

Schema List

The initial grid lists the schemas accessible to the user. Each schema is displayed along with the total number of records across all the tables & views it contains.

From this view, the following functionality is available:

• (Refresh) -- refresh the list of schemas
• + Schema -- create a new schema
• + Table -- create a new table
• Rename -- rename the selected schema
• Delete -- delete the selected schema(s)
• Memory -- display the current amount of used memory by the tables and views in the selected schema(s)
• Filter -- only display schemas matching the given search text and schemas containing tables and/or views matching the given search text
• Sync Mode -- if enabled, record counts will be accurate but potentially slower to update

Table/View List

Clicking on a schema will show a grid view of all the tables & views that schema contains, with details about each. Available are the object type, type of distribution (replicated, sharded, or neither), feature set (see list below), global access rights (read/write), keys (primary, shard, and foreign) and associated columns, and the record count.

The types of objects are as follows:

• T -- table
• MV -- materialized view
• LV -- logical view
• ME -- materialized external table

The types of features are as follows:

• PERS (PERSISTED) -- the table exists on disk & in memory (i.e., not memory-only) and will exist across database restarts
• JOIN -- a join view or materialized view that ends in a join view
• RESU (RESULT_TABLE) -- results from endpoint operations like Create Projection and Create Union
• VIEW -- a filtered view, a join view, or a materialized view that ends in a filtered or join view

From this view, the following functionality is available:

• (Refresh) -- refresh the list of tables & views
• + Table -- create a new table
• Config -- modify the selected table
• Rename -- rename the selected table
• Move -- move the selected table(s) and/or view(s) to a different schema
• Delete -- delete the selected table(s) and/or view(s)
• Rebuild -- rebuild the selected table(s) and/or view(s)
• Memory -- display the current amount of used memory for the selected table(s) and/or view(s)
• Stats -- display statistics regarding a selected column or all columns in the selected table or view, e.g., estimated cardinality, mean value, standard deviation, etc.; and recommendations for improving the structure of the table, e.g., dictionary encoding, smaller column type, etc.
• Sec -- manage row- and column- security for the selected table or view
• Filter -- only display tables and views matching the given search text
• Sync Mode -- if enabled, record counts will be accurate but potentially slow

Creating

A table can be created by clicking Create (underneath Tables) on the left menu to navigate to the Create Table page. After configuring the name, containing schema name, distribution scheme, keys, column set, tier strategy definition, and partitioning, click Create New Table.

Defining a Tier Strategy

From the Edit Table page:

• Click + Group to append additional column strategy groupings to the table

• Click + Chain to append additional priority definitions to a group

• Provide a comma-separated list of columns, an eviction priority for each available tier (tiers are defined in /opt/gpudb/core/etc/gpudb.conf), and an optional predicate

  Tip

  Omit Columns to apply the strategy to the entire table

Example

For instance, consider the following tier strategy, applied to a table with a timestamp column named last_seen, a positive integer id column, and a string name column:

1 2 3 4 5 6 7 8

( (VRAM 1, RAM 9) WHERE last_seen > TIMESTAMPADD(DAY, -3, NOW()), (VRAM 1, RAM 8, DISK2 7) ), ( COLUMNS id, name (VRAM 2, RAM 10) WHERE last_seen > TIMESTAMPADD(MINUTE, -1, NOW()) )

To recreate this strategy in the table configuration interface:

Partitioning

From the Edit Table page:

1. Select a partition type.
2. Provide as many Key(s) as necessary. Click + to add key expressions.
3. Provide as many Definition(s) as necessary. Click + to add definitions.

Example

To create a range-partitioned table with the following criteria:

• partitioned by the date/time of the order
• partitions for years 2016, 2017, 2018, & 2019
• records not in that range go to the default partition

Configuring

To configure an existing table, click Config, update the table configuration as necessary, and click Apply. Click Reset to discard any pending modifications.

Allowed modifications include:

• Renaming the table
• Modifying the TTL
• Renaming the non-primary/shard key columns
• Modifying the type, subtype, storage, and properties of a non-primary/shard key column
• Removing any non-primary/shard key columns
• Adding new columns
• Adjusting the tier strategy definition; see Defining a Tier Strategy for assistance.
• Adjusting the table partitioning; note that only existing range or list partitions can be adjusted

Moving

To move one or more tables and/or views to another schema, select the table(s)/view(s) (avoid clicking any table/view name, as that will open the Data Grid page) and then click Move. In the pop-up, select which schema to move them to and click Move.

Deleting

To delete one or more tables and/or views, select the table(s)/view(s) (avoid clicking any table/view name, as that will open the Data Grid page) and then click Delete. In the pop-up, confirm the deletion.

Rebuilding

To rebuild one or more tables and/or views if you are unable to query them, select the table(s)/view(s) (avoid clicking any table/view name, as that will open the Data Grid page) and then click Rebuild. In the pop-up, confirm the rebuild. Acknowledge the warning, then the selected objects will be rebuilt. For more information on rebuilding the entire database, see Admin.

Detailed Table Information

To view table/view detail, structure, memory usage, and tier strategy information, click Detail in the Info column. The column grid can be exported to CSV by clicking Export CSV.

WMS

If your data contains coordinates and/or geometry data, you can:

• When viewing the list of tables (Data ‣ Tables), click the Map link in the WMS column
• When browsing a table's datagrid, click the WMS button in the top bar

You can use the + / - on the left or the scroll wheel of your mouse to zoom in and out of an area. Click to draw a polygon on top of the map; this will act as a filter for the viewport. Click to remove any polygons on the map. Click Download PNG to download a .png file of the current viewport. Provide a table name and click Export Viewport to export the points in the current viewport to a separate table; note that if any polygon(s) were drawn on the map, only the points inside those polygons will be exported to the new table.

The following column types can be used to populate the map with latitude/longitude points (assuming the columns being used to render the points are of the same type):

• double
• float
• int
• int16
• int8
• long
• timestamp (the raw epoch value will be used to render the point)
• decimal

The following column types can be used to populate the map with WKT objects:

• wkt
• wkb

If there are multiple WKT/WKB columns, select the desired column to display, select None to not display any compatible column(s), or select All to display all compatible column(s) next to WKT; if there are multiple longitude / latitude columns, select the desired columns from the Lon/Lat drop-down menus. If there are both WKT objects and longitude / latitude points present in a table, select the WKT column to display WKT or select None and the desired columns from the Lon/Lat drop-down menus to display longitude / latitude points.

Data Grid

To view the individual records in a table, click the table name. This will display the data grid page. From here, the following functionality is available:

• (Refresh) -- refresh the table
• Add -- insert a new record
• Edit -- modify the selected record
• Delete -- delete the selected record
• Move -- move the table or view to a different schema
• Conf -- modify the table or view
• CSV -- export data to CSV
• Hide -- hide displayed columns within the grid
• Info -- display table detail
• Dist -- display cross-node data distribution graph
• Stats -- display statistics regarding a selected column or all columns in the table, e.g., estimated cardinality, mean value, standard deviation, etc., and recommendations for improving the structure of the table, e.g., dictionary encoding, smaller column type, etc.
• WMS -- plot data from tables with geospatial data on a map
• Sec -- manage row- and column- security for the table
• Order Cols -- If enabled, the columns will be displayed alphabetically
• Sync Mode -- if enabled, table row counts will be accurate but potentially slow

Export Data

From the data grid page, select CSV. You will have the option to export all of the data or records within a range, specify the type of header, and how to order the data on export.

Once you click the Export button, the data will be downloaded to your computer as a CSV file using the format <schema>.<table>.csv. The standard header is just a comma-delimited list of column header names:

The Kinetica Schema is a comma-delimited list of column headers with pipe-delimited column properties:

Note

Null values are represented as \N. This can be changed by modifying the data_file_string_null_value parameter in /opt/gpudb/tomcat/webapps/gadmin/WEB-INF/classes/gaia.properties.

Advanced Table Security

Advanced table security (e.g., row- and column-level) can be enabled on a per-table basis for select users and roles by:

• When viewing the list of tables (Data ‣ Tables), select a table then click the Sec button in the top bar
• When browsing a table's datagrid, click the Sec button in the top bar

A user or role must have the table_read permission on a selected table for the row- and/or column-level security to apply. Review Row-Level Security and Column-Level Security for more information.

Columns

Fixed-width string columns in the selected table can have pre-configured masks applied when setting column-level security for a user or role. To create a mask for a column:

1. Navigate to the Advanced Table Security window and display the Columns tab.
2. Select a valid column from the list.
3. Specify a Start Position for the mask.
4. Specify the # of Masked Characters.
5. Specify the Mask Character.
6. Optionally, type into the Preview field to preview the mask before saving.
7. Click Save and confirm the column mask.

Create

A graph can be created by clicking Create (underneath Graphs) on the left menu to navigate to the Create Graph page. Follow the steps below to create a graph using the interface:

1. Provide a name for the graph.
2. Choose whether the graph should be directed
3. Optionally, select a desired node configuration from the Nodes drop-down menu and click Add +. For each identifier that appears after adding the configuration to the graph, provide a column name, expression, or raw value (as outlined in Components and Identifiers) to use with the identifier. Repeat as necessary.
4. Select a desired edge configuration from the Edges drop-down menu and click Add +. For each identifier that appears after adding the configuration to the graph, provide a column name, expression, or raw value (as outlined in Components and Identifiers) to use with the identifier. Repeat as necessary.
5. Select a desired weight configuration from the Weights drop-down menu and click Add +. For each identifier that appears after adding the configuration to the graph, provide a column name, expression, or raw value (as outlined in Components and Identifiers) to use with the identifier. Repeat as necessary.
6. Optionally, select a desired restriction configuration from the Restrictions drop-down menu and click Add +. For each identifier that appears after adding the configuration to the graph, provide a column name, expression, or raw value (as outlined in Components and Identifiers) to use with the identifier. Repeat as necessary.
7. Adjust the options as desired.
8. Click Create New Graph.

Query

An existing graph can be queried by clicking Query (underneath Graphs) on the left menu to navigate to the Query Graph page. Follow the steps below to query a graph using the interface:

1. Select an existing graph from the Graph Name drop-down menu.

2. Select a desired query configuration from the Queries drop-down menu and click Add +. For each query identifier that appears after adding the configuration, provide a column name, expression, or raw value (as outlined in Components and Identifiers) to use with the query identifier. Repeat as necessary.

   Tip

   If you select QUERY_NODE_WKTPOINT, you can click to open the graph in the WMS viewer and manually select point(s) on the map.

   

3. Optionally, select a desired restriction configuration from the Restrictions drop-down menu and click Add +. For each identifier that appears after adding the configuration, provide a column name, expression, or raw value (as outlined in Components and Identifiers) to use with the identifier. Repeat as necessary.

4. Provide an adjacency table name into which the results will be output.

5. Provide the number of rings (or hops) for the query.

6. Adjust the options as desired.

7. Click Query Graph.

Solve

An existing graph can be solved using a variety of methods by clicking Solve (underneath Graphs) on the left menu to navigate to the Solve Graph page. Follow the steps below to solve a graph using the interface:

1. Select an existing graph from the Graph Name drop-down menu.

2. Optionally, select a desired weight configuration from the Weights on Edges drop-down menu and click Add +. For each identifier that appears after adding the configuration, provide a column name, expression, or raw value (as outlined in Components and Identifiers) to use with the identifier. Repeat as necessary.

3. Optionally, select a desired restriction configuration from the Restrictions drop-down menu and click Add +. For each identifier that appears after adding the configuration, provide a column name, expression, or raw value (as outlined in Components and Identifiers) to use with the identifier. Repeat as necessary.

4. Select a solver from the Solver Type drop-down menu.

5. Select a node type from the Source Nodes drop-down menu and click Add +. For each field that appears after adding the node type, provide a column name, expression, or raw value (as outlined in Components and Identifiers) to use with the identifier. Repeat as necessary. If adding multiple source nodes, they should all be of the same type.

   Tip

   If you select NODE_WKTPOINT, you can click to open the graph in the WMS viewer and manually select point(s) on the map.

   

6. Select a node type from the Destination Nodes drop-down menu and click Add +. For each field that appears after adding the node type, provide a column name, expression, or raw value (as outlined in Components and Identifiers) to use with the identifier. Repeat as necessary. If adding multiple source nodes, they should all be of the same type.

   Tip

   If you select NODE_WKTPOINT, you can click to open the graph in the WMS viewer and manually select point(s) on the map.

   

7. Provide a solution table name into which the results will be output.

8. Adjust the options as desired.

9. Click Solve Graph. A WMS request of the solution(s) will open. Click a solution route to see the start () and end () points:

   

Match

An existing graph can be matched using a variety of methods by clicking Match (underneath Graphs) on the left menu to navigate to the Match Graph page. Follow the steps below to match a graph using the interface:

1. Select an existing graph from the Graph Name drop-down menu.
2. Select a sample points configuration from the Sample Points drop-down menu and click Add +. For each field that appears after adding the configuration, provide a column name, expression, or raw value (as outlined in Components and Identifiers) to use with the identifier. Repeat as necessary.
3. Select a solver from the Solve Method drop-down menu.
4. Provide a solution table name into which the results will be output.
5. Adjust the options as desired.
6. Click Match Graph.