Question

我正在尝试执行以下SQL查询：

SELECT TMP.*,COUNT(*) OVER () AS rCount 
FROM (
    SELECT venueID, 
           venueName AS venueName, 
           venueSpanish AS spanish, 
           venueAddress + ', ' + venueCity + ', ' + venueState + ' ' + venueZip AS venueAddress, 
           venueLatLong AS coordinates, 
           CONVERT(VARCHAR, venueEventDate, 101) + ' @ ' + CONVERT(VARCHAR,venueTime) AS dateAndTime, 
           SUBSTRING(venueLatLong, 1, CHARINDEX(',', venueLatLong)-1) AS Lat, 
           SUBSTRING(venueLatLong, CHARINDEX(',', venueLatLong) + 1, 1000) AS Lng, 
           (round(3959 * acos (cos(radians('35.0935409')) * 
                cos(radians(SUBSTRING(venueLatLong, 1, CHARINDEX(',', venueLatLong)-1))) * 
                cos(radians(SUBSTRING(venueLatLong, CHARINDEX(',', venueLatLong) + 1, 1000)) - 
                radians('-85.0856761')) + 
                sin(radians('35.0935409')) * 
                sin(radians(SUBSTRING(venueLatLong, 1, CHARINDEX(',', venueLatLong)-1)))), 1, 1)) AS distance 
    FROM meetUpMarkers) TMP 
WHERE distance < 30

但是，我这样做是错误的：

Msg 537，Level 16，State 2，Line 1

传递给LEFT或SUBSTRING函数的长度参数无效。

任何帮助都可以解决这个问题！

Answer 1

可能就是这一行：

SUBSTRING(venueLatLong, 1, CHARINDEX(',', venueLatLong)-1) AS Lat

venueLatLong中没有逗号，这导致-1的长度

为什么不将纬度和经度存储在两个数字列而不是VarChar中？

Answer 2

问题可能在于传递给doxygen { generate_latex true generate_html true source projectDir include '*.java' include '**/*.md' use_mdfile_as_mainpage new File(projectDir, 'readme.md') full_path_names false //Project related configuration options project_logo new File(projectDir,'logo.png') project_name 'Android' outputDir new File(projectDir, 'docs/') optimize_output_java true markdown_support true autolink_support true subgrouping true //Configuration options related to the input files input_encoding 'UTF-8' file_paterns '*.java','*.md' recursive true //Configuration options related to source browsing strip_code_comments true references_link_source true source_tooltips true verbatim_headers true //Configuration options related to the alphabetical class index alphabetical_index true cols_in_alpha_index 5 //Configuration options related to the HTML output html_header new File(projectDir,'header.html') html_footer new File(projectDir,'footer.html') html_stylesheet new File(projectDir,'custom.css') html_extra_files new File(projectDir,'favicon.ico') generate_treeview true函数的参数。在查询中重复此条件。

substring

如果CHARINDEX(',', venueLatLong)不包含venueLatLong，则,的此参数无效。

可以通过包含substring子句来避免这种情况。

where

LEFT或SUBSTRING函数中的SQL 2012错误

2 个答案: