1e41f4b71Sopenharmony_ci# OH_Cursor 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci## Overview 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_ci 7e41f4b71Sopenharmony_ciProvides APIs to access the result set obtained by querying the RDB store. 8e41f4b71Sopenharmony_ci 9e41f4b71Sopenharmony_ci**Since**: 10 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_ci**Related module**: [RDB](_r_d_b.md) 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci 14e41f4b71Sopenharmony_ci## Summary 15e41f4b71Sopenharmony_ci 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ci### Member Variables 18e41f4b71Sopenharmony_ci 19e41f4b71Sopenharmony_ci| Name| Description| 20e41f4b71Sopenharmony_ci| -------- | -------- | 21e41f4b71Sopenharmony_ci| [id](_r_d_b.md#id-15) | Unique identifier of the **OH_Cursor** struct. | 22e41f4b71Sopenharmony_ci| [getColumnCount](_r_d_b.md#getcolumncount) | Pointer to the function used to obtain the number of columns in the result set. | 23e41f4b71Sopenharmony_ci| [getColumnType](_r_d_b.md#getcolumntype) | Pointer to the function used to obtain the column type based on the specified column index. | 24e41f4b71Sopenharmony_ci| [getColumnIndex](_r_d_b.md#getcolumnindex) | Pointer to the function used to obtain the column index based on the specified column name. | 25e41f4b71Sopenharmony_ci| [getColumnName](_r_d_b.md#getcolumnname) | Pointer to the function used to obtain the column name based on the specified column index. | 26e41f4b71Sopenharmony_ci| [getRowCount](_r_d_b.md#getrowcount) | Pointer to the function used to obtain the number of rows in the result set. | 27e41f4b71Sopenharmony_ci| [goToNextRow](_r_d_b.md#gotonextrow) | Pointer to the function used to go to the next row of the result set. | 28e41f4b71Sopenharmony_ci| [getSize](_r_d_b.md#getsize) | Pointer to the function used to obtain information about the memory required when the column data type in the result set is **BLOB** or **TEXT**. | 29e41f4b71Sopenharmony_ci| [getText](_r_d_b.md#gettext) | Pointer to the function used to obtain the value of the string type based on the specified column and the current row. | 30e41f4b71Sopenharmony_ci| [getInt64](_r_d_b.md#getint64) | Pointer to the function used to obtain the value of the int64_t type based on the specified column and the current row. | 31e41f4b71Sopenharmony_ci| [getReal](_r_d_b.md#getreal) | Pointer to the function used to obtain the value of the double type based on the specified column and the current row. | 32e41f4b71Sopenharmony_ci| [getBlob](_r_d_b.md#getblob) | Pointer to the function used to obtain the values in the form of a byte array based on the specified column and the current row. | 33e41f4b71Sopenharmony_ci| [isNull](_r_d_b.md#isnull-12) | Pointer to the function used to check whether the value in the specified column is null. | 34e41f4b71Sopenharmony_ci| [destroy](_r_d_b.md#destroy-14) | Pointer to the function used to close a result set. | 35e41f4b71Sopenharmony_ci| [getAsset](_r_d_b.md#getasset) | Pointer to the function used to obtain the value of the asset type based on the specified column and current row. | 36e41f4b71Sopenharmony_ci| [getAssets](_r_d_b.md#getassets) | Pointer to the function used to obtain the values in the form of an asset array based on the specified column and current row. | 37