如何知道SQL全文索引填充何时完成?

您可以使用FULLTEXTCATALOGPROPERTY查询状态(请参见此处: http://technet.microsoft.com/en-us/library/ms190370.aspx

例如:

SELECT
    FULLTEXTCATALOGPROPERTY(cat.name,'ItemCount') AS [ItemCount],
    FULLTEXTCATALOGPROPERTY(cat.name,'MergeStatus') AS [MergeStatus],
    FULLTEXTCATALOGPROPERTY(cat.name,'PopulateCompletionAge') AS [PopulateCompletionAge],
    FULLTEXTCATALOGPROPERTY(cat.name,'PopulateStatus') AS [PopulateStatus],
    FULLTEXTCATALOGPROPERTY(cat.name,'ImportStatus') AS [ImportStatus]
FROM sys.fulltext_catalogs AS cat

当您打开目录的“属性”对话框时,您可能还希望使用SQL事件探查器监视SQL Server Management Studio发出的命令。该对话框包括一个人口状态指示器,所有显示的信息都使用T-SQL查询。

我想提供一个更容易阅读的版本@Daniel Renshaw的答案:

DECLARE @CatalogName VARCHAR(MAX)
SET     @CatalogName = 'FTS_Demo_Catalog'

SELECT
    DATEADD(ss, FULLTEXTCATALOGPROPERTY(@CatalogName,'PopulateCompletionAge'), '1/1/1990') AS LastPopulated
    ,(SELECT CASE FULLTEXTCATALOGPROPERTY(@CatalogName,'PopulateStatus')
        WHEN 0 THEN 'Idle'
        WHEN 1 THEN 'Full Population In Progress'
        WHEN 2 THEN 'Paused'
        WHEN 3 THEN 'Throttled'
        WHEN 4 THEN 'Recovering'
        WHEN 5 THEN 'Shutdown'
        WHEN 6 THEN 'Incremental Population In Progress'
        WHEN 7 THEN 'Building Index'
        WHEN 8 THEN 'Disk Full.  Paused'
        WHEN 9 THEN 'Change Tracking' END) AS PopulateStatus

结果:

LastPopulated           PopulateStatus
----------------------- ----------------------------------
2012-05-08 14:51:37.000 Idle

(1 row(s) affected)

这是我们根据garetohen的答案创建的存储过程。它接受以逗号分隔的表列表作为参数,并等待所有表的全文索引更新。它每隔十分之一秒进行一次检查,以防止磁盘抖动,并在10秒后超时,以防运行缓慢/出现故障。如果您的FT搜索是跨多个索引的,那么它很有用。

按以下方式调用:

EXECUTE [dbo].[WaitForFullTextIndexing] 'MY_TABLE,ALTERNATE_NAMES,TAG_GROUP_VALUES,TAG_GROUPS,FIELD_OPTION';

资料来源:

CREATE PROCEDURE WaitForFullTextIndexing
    @TablesStr varchar(max)
AS
BEGIN
    DECLARE @Tables AS TABLE( [word] [varchar](8000) NULL)

    INSERT INTO @Tables (word) SELECT items from dbo.Split(@TablesStr, ',');

    DECLARE @NumberOfTables int;
    SELECT @NumberOfTables = COUNT(*) from @Tables;

    DECLARE @readyCount int;
    SET @readyCount = 0;

    DECLARE @waitLoops int;
    SET @waitLoops = 0;

    DECLARE @result bit;

    WHILE @readyCount <> @NumberOfTables AND @waitLoops < 100
    BEGIN

        select @readyCount = COUNT(*)
        from @Tables tabs
        where OBJECTPROPERTY(object_id(tabs.word), 'TableFulltextPopulateStatus') = 0;

        IF @readyCount <> @NumberOfTables
        BEGIN
            -- prevent thrashing
            WAITFOR DELAY '00:00:00.1';
        END

        set @waitLoops = @waitLoops + 1;

    END

END
GO

dbo.split是一个表值函数,现在每个人都必须拥有它,它将分隔符上的字符串拆分为一个临时表:

CREATE FUNCTION [dbo].[Split](@String varchar(8000), @Delimiter char(1))        
returns @temptable TABLE (items varchar(8000))        
as        
begin        
    declare @idx int        
    declare @slice varchar(8000)        

    select @idx = 1        
        if len(@String)<1 or @String is null  return        

    while @idx!= 0        
    begin        
        set @idx = charindex(@Delimiter,@String)        
        if @idx!=0        
            set @slice = left(@String,@idx - 1)        
        else        
            set @slice = @String        

        if(len(@slice)>0)   
            insert into @temptable(Items) values(@slice)        

        set @String = right(@String,len(@String) - @idx)        
        if len(@String) = 0 break        
    end    
return        
end 

GO

谢谢丹尼尔,你的回答让我走上了正轨。

实际上,我使用以下T-SQL语句询问全文索引的填充状态是否为空闲:

SELECT OBJECTPROPERTY(object_id('v_doc_desc_de'), 'TableFulltextPopulateStatus')

如果人口状态不是空闲的,我会等待几秒钟,然后再次询问,直到它空闲。在检查之间等待一小段时间是很重要的,以确保全文填充不会因为连续检查填充状态而减慢。

MSDN documentation 声明 OBJECTPROPERTYEX 函数(在表级别)建议在 FULLTEXTCATALOGPROPERTY 属性为“PopulateStatus”的语句。它规定如下:

要等待全文目录完成其所有表和视图的填充,而不必指定它们的名称,可以使用以下存储过程。这是JohnB对这个问题的回答和cezarm对a的回答的结合 related question :

CREATE PROCEDURE WaitForFullTextIndexing
@CatalogName VARCHAR(MAX)
AS
BEGIN
    DECLARE @status int;
    SET @status = 1;
    DECLARE @waitLoops int;
    SET @waitLoops = 0;

    WHILE @status > 0 AND @waitLoops < 100
    BEGIN       
        SELECT @status = FULLTEXTCATALOGPROPERTY(@CatalogName,'PopulateStatus')
        FROM sys.fulltext_catalogs AS cat;

        IF @status > 0
        BEGIN
            -- prevent thrashing
            WAITFOR DELAY '00:00:00.1';
        END
        SET @waitLoops = @waitLoops + 1;
    END
END

我做了以下工作:

        var indexIsPopulating = true;
        var stopWatch = new Stopwatch();
        stopWatch.Start();
        while (indexIsPopulating)
        {
            System.Threading.Thread.Sleep(500);
            using var con = new SqlConnection(databaseConnectionString);
            // using dapper here - but you just need to run query on databsae
            var status = await con.QueryFirstAsync<int>("SELECT OBJECTPROPERTY(OBJECT_ID('dbo.MyTableName'), 'TableFulltextPopulateStatus'); ");
            if (status == 0)
            {
                indexIsPopulating = false;
            }
            else if (stopWatch.ElapsedMilliseconds > 60000) // 1 minute
            {
                stopWatch.Stop();
                throw new Exception("Full Text Index failed to populate within 1 minute.");
            }
        }
        stopWatch.Stop();