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db_get_field

warning

This function starts with lowercase letter.

คำอธิบาย​

Get the content of a field from db_query

NameDescription
DBResult:dbresultThe result to get the data from.
fieldThe field to get the data from.
result[]The result.
maxlengthThe max length of the field.

ส่งคืน​

Returns 1 if successful, otherwise 0 if DBResult:dbresult is a NULL reference or the column index not available.

ตัวอย่าง​

// Example function
GetNameBySpawnID(spawn_id)
{
    // Declare "p_name"
    new p_name[MAX_PLAYER_NAME+1];

    // Declare "query" and "db_result"
    static query[60], DBResult:db_result;

    // Formats "query"
    format(query, sizeof query, "SELECT `PlayerName` FROM `spawn_log` WHERE `ID`=%d", spawn_id);

    // Selects the player name by using "spawn_id"
    db_result = db_query(db_handle, query);

    // If there is any valid entry
    if (db_num_rows(db_result))
    {
        // Store data from "PlayerName" into "p_name"
        db_get_field(db_result, 0, p_name, sizeof p_name);
    }

    // Frees the result
    db_free_result(db_result);

    // Returns "p_name"
    return p_name;
}

บันทึก​

warning

Using an invalid handle will crash your server! Get a valid handle by using db_query. But it's protected against NULL references.

ฟังก์ชั่นที่เกี่ยวข้องกัน​

  • db_open: Open a connection to an SQLite database
  • db_close: Close the connection to an SQLite database
  • db_query: Query an SQLite database
  • db_free_result: Free result memory from a db_query
  • db_num_rows: Get the number of rows in a result
  • db_next_row: Move to the next row
  • db_num_fields: Get the number of fields in a result
  • db_field_name: Returns the name of a field at a particular index
  • db_get_field: Get content of field with specified ID from current result row
  • db_get_field_assoc: Get content of field with specified name from current result row
  • db_get_field_int: Get content of field as an integer with specified ID from current result row
  • db_get_field_assoc_int: Get content of field as an integer with specified name from current result row
  • db_get_field_float: Get content of field as a float with specified ID from current result row
  • db_get_field_assoc_float: Get content of field as a float with specified name from current result row
  • db_get_mem_handle: Get memory handle for an SQLite database that was opened with db_open.
  • db_get_result_mem_handle: Get memory handle for an SQLite query that was executed with db_query.
  • db_debug_openfiles
  • db_debug_openresults