elasticsearch index size

I. Creating index Considerations1. Estimated Index size2. View the amount of space available in the Index table space3. View temporary table space size4. Creation of business idle period5, can consider the online, parallel, nologging modeSecond, the estimation index methodThe procedure is as follows:Sql> explain plan f

Practice: mysql collects statistics on the data and index size of all tables in the specified Architecture # collects statistics on the data and index size of all tables in the specified architecture # Tablesize. sh #! /Bin/sh # Ocpyang@126.com If ["$ #"-gt 2]; thenEcho "**********************************"Echo "too wr

Development encountered Java.lang.IndexOutOfBoundsException:Invalid index 0, size is 0This anomaly sometimes happens, sometimes it's not very good to captureGuess has given the data to list, and then let the main thread to display, and then continue to retrieve data in the background. It might be possible that the main thread is still not refreshed, and the backstage is giving the new data back.So guessing

Exception: Android.database.cursorindexoutofboundsexception:index-1 requested, with a size of 10This error is that the data returned to ICursor cannot determine the index of the Get column, so you need to add a bit of code.if 0) // Determining cursor Position { IC. Movetofirst ();} Else { IC. MoveToNext ();}Full Code Demo:/// ///Querying Data/// voidQuerydata () {icursor IC= Localhost_data

We all know that the most effective way to improve the data query speed of SQL Server is to create indexes for the table, and we add, delete, modify the data table, it will produce index fragment, the index fragmentation is much, the performance has a great impact, the more index fragmentation on the performance of database queries the greater the impact, At this

When I started to encounter this problem, my first reaction was, "the data is out of bounds, the problem should be inside the array." Then I'll find it in the data. But all the relevant data are checked again, the data is not a problem ah.Then I promised all the data. Constant testing. found that the data of a place sent a change. There is a certain chance that this change can happen. And then I came up with this by accident. The discovery is that this set of data is another interface of data.Th

# Count the data and index size of all tables in the specified Architecture# Tablesize. sh#! /Bin/sh# Ocpyang@126.com If ["$ #"-gt 2]; thenEcho "**********************************"Echo "too wrote input parameters"Echo "**********************************"Echo "USAGE01: $0 schema_name table_name"Echo "eg01: $0 wind t1"Echo "USAGE02: $0 schema_name"Echo "eg02: $0 wind"Exit 1;Fi Source/usr/local/mysql/scripts/m

PS: no input schema_name and table_name are judged in the first version. I modified it! Share again! # Count the data and index size of all tables in the specified Architecture# Tablesize. sh#! /Bin/sh# Ocpyang@126.com If ["$ #"-gt 2-o "$ #"-lt 1]; thenEcho "**********************************"Echo "too wrote input parameters"Echo "**********************************"Echo "USAGE01: $0 schema_name table_name

In android development, if we need to read data from a certain field in a table, we usually use a database cursor to traverse and read data from top to bottom, to ensure that the table is not empty, call the getCount method of cursor. If the value is not 0, the table is not empty, after determining whether the table is empty, developers can read data directly by field. An error similar to this will be reported during running: Index-1 requested, with

First, Introduction PostgreSQL provides a number of system management functions to view tables, indexes, table spaces, and the size of the database, described in detail below. second, the Database object dimension function The name of the function return type Describe Pg_column_size (Any) Int The number of bytes required to store a specified number (possibly compressed) Pg_database_size (OID)

VBulletin HACK ----Display the topic size and open a new window on the Forum index page Author: gogosoft "Show topic Size" Cause: 1.1.4 does not have this feature, and some users will use this as a reference to whether to view the topic. Advantages: Just add a few lines of code to it. Disadvantage: Because every time you display the Forum

Querying MySQL table size and index size can be achieved through the tables table in the system library INFORMATION_SCHEMA.Some of the fields used in this table are:Table_schema: Database nameTABLE_NAME: Table nameEngine: the storage engine usedTables_rows: Number of record linesData_length: Table SizeIndex_length: Index