回答:按照sql標(biāo)準(zhǔn)來說 = null這種語法本來就是錯誤的,在oracle postgresql mssql等企業(yè)級數(shù)據(jù)庫中這種語法根本就不支持。判斷是否為null的標(biāo)準(zhǔn)sql規(guī)范是is null 和is not null。sql是個公共的數(shù)據(jù)庫查詢語言有他自己的標(biāo)準(zhǔn)。mysql postgresql mssql oracle等都不同程度的遵循不同的sql標(biāo)準(zhǔn)并且各自都又在自家產(chǎn)品中加入了他自己的特色...
問題描述:[hadoop@usdp01 ~]$ hbase shellSLF4J: Class path contains multiple SLF4J bindings.SLF4J: Found binding in [jar:file:/opt/usdp-srv/srv/udp/2.0.0.0/hdfs/share/hadoop/common/lib/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]...
問題描述:2022-10-21 17:26:57`SEVERE`io.prometheus.jmx.shaded.io.prometheus.jmx.JmxCollector`io.prometheus.jmx.shaded.io.prometheus.jmx.JmxCollector collect`JMX scrape failed: java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.NoIni...
回答:已解決 mysql 啟動失敗導(dǎo)致。
...eduped │ └── util-deprecate@1.0.2 └── upath@1.1.2 npm ERR! missing: mkdirp@0.5.1, required by node-pre-gyp@0.10.3 npm ERR! missing: minimist@0.0.8, required by mkdirp@0.5.1 npm ERR! missing: mini...
...,打開工程屬性,發(fā)現(xiàn)頭部有黃色嘆號(Build path entry is missing: org.eclipse.jdt.launching.JRE_CONTAINE...rg.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/openjdk-12),而 JRE 那里 寫著 unbound,怎么辦? 很簡單,雙擊 那個 unbo...
problem: You will create a program that will find the missing letter from a string and return it. If there is no missing letter, the program should return undefined. There is currently no test case fo...
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