GPUdb C++ API
Version 7.0.19.0
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A set of input parameters for const. More...
#include <gpudb/protocol/alter_table_columns.h>
Public Member Functions | |
AlterTableColumnsRequest () | |
Constructs an AlterTableColumnsRequest object with default parameter values. More... | |
AlterTableColumnsRequest (const std::string &tableName_, const std::vector< std::map< std::string, std::string > > &columnAlterations_, const std::map< std::string, std::string > &options_) | |
Constructs an AlterTableColumnsRequest object with the specified parameters. More... | |
Public Attributes | |
std::string | tableName |
std::vector< std::map < std::string, std::string > > | columnAlterations |
std::map< std::string, std::string > | options |
A set of input parameters for const.
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.
Set or unset compression for a column.
Definition at line 34 of file alter_table_columns.h.
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inline |
Constructs an AlterTableColumnsRequest object with default parameter values.
Definition at line 41 of file alter_table_columns.h.
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inline |
Constructs an AlterTableColumnsRequest object with the specified parameters.
[in] | tableName_ | Table on which the operation will be performed. Must be an existing table or view. |
[in] | columnAlterations_ | 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'} ] |
[in] | options_ | Optional parameters. |
Definition at line 72 of file alter_table_columns.h.
std::vector<std::map<std::string, std::string> > gpudb::AlterTableColumnsRequest::columnAlterations |
Definition at line 80 of file alter_table_columns.h.
std::map<std::string, std::string> gpudb::AlterTableColumnsRequest::options |
Definition at line 81 of file alter_table_columns.h.
std::string gpudb::AlterTableColumnsRequest::tableName |
Definition at line 79 of file alter_table_columns.h.