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Apply various modifications to columns in a table, view. The available modifications include the following: Create or delete an index on a particular column. This can speed up certain operations when using expressions containing equality or relational operators on indexed columns. This only applies to tables. Manage a table’s columns—a column can be added, removed, or have its type and properties modified, including whether it is dictionary encoded or not.

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Input Parameter Description

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string
Table on which the operation will be performed. Must be an existing table or view, in [schema_name.]table_name format, using standard name resolution rules.
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array of maps of string to strings
List of alter table add/delete/change column requests - all for the same table. Each request is a map that includes ‘column_name’, ‘action’ and the options specific for the action. Note that the same options as in alter table requests but in the same map as the column name and the action. For example: [{‘column_name’:‘col_1’,‘action’:‘change_column’,‘rename_column’:‘col_2’},{‘column_name’:‘col_1’,‘action’:‘add_column’, ‘type’:‘int’,‘default_value’:‘1’}].
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map of string to strings
Optional parameters.

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Output Parameter Description

The Kinetica server embeds the endpoint response inside a standard response structure which contains status information and the actual response to the query. Here is a description of the various fields of the wrapper:
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String
‘OK’ or ‘ERROR’
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String
Empty if success or an error message
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String
‘alter_table_columns_response’ or ‘none’ in case of an error
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String
Empty string
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JSON or String
This embedded JSON represents the result of the /alter/table/columns endpoint:Empty string in case of an error.