{"id":46820,"date":"2023-01-31T08:47:17","date_gmt":"2023-08-03T18:56:51","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8%e8%83%bd%e5%9c%a8-apache-kafka-%e4%b8%8a%e6%89%a7%e8%a1%8c-sql-%e7%9a%84-ksql%e3%80%82\/"},"modified":"2024-04-29T12:21:51","modified_gmt":"2024-04-29T04:21:51","slug":"%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8%e8%83%bd%e5%9c%a8-apache-kafka-%e4%b8%8a%e6%89%a7%e8%a1%8c-sql-%e7%9a%84-ksql%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8%e8%83%bd%e5%9c%a8-apache-kafka-%e4%b8%8a%e6%89%a7%e8%a1%8c-sql-%e7%9a%84-ksql%e3%80%82\/","title":{"rendered":"\u5c1d\u8bd5\u4f7f\u7528\u80fd\u5728 Apache Kafka \u4e0a\u6267\u884c SQL \u7684 KSQL"},"content":{"rendered":"<p>KSQL\u7684\u53d1\u5e03\u5df2\u7ecf\u5728Confluent\u5ba3\u5e03\u4e86\u3002\u8fd9\u662f\u4e00\u4e2a\u53ef\u4ee5\u5728Kafka\u4e0a\u8fdb\u884cSQL\u6d41\u5904\u7406\u7684\u5de5\u5177\u3002\u8ba9\u6211\u4eec\u7acb\u5373\u5f00\u59cb\u4f7f\u7528\u5427\u3002<\/p>\n<h2>\u8bf7\u63d0\u4f9b\u4e0b\u5217\u6587\u672c\u7684\u4e2d\u6587\u7ffb\u8bd1\uff1a<\/h2>\n<p>\u53c2\u8003<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Introducing KSQL: Open Source Streaming SQL for Apache Kafka<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">KSQL from Confluent | Streaming SQL for Apache Kafka\u2122 &#8211; YouTube<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">ksql\/docs\/quickstart at 0.1.x \u00b7 confluentinc\/ksql<\/ul>\n<h2>Apache Kafka \u662f\u4ec0\u4e48\uff1f<\/h2>\n<p>Apache Kafka \u662f\u7531 LinkedIn \u5f00\u53d1\u7684\u5206\u5e03\u5f0f\u6d88\u606f\u4f20\u9012\u7cfb\u7edf\u3002\u5b83\u5177\u6709\u57fa\u4e8e\u4e3b\u9898\u7684\u6d88\u606f\u7ba1\u7406\u548c\u6309\u6d88\u8d39\u8005\u7ec4\u8fdb\u884c\u6392\u961f\u7b49\u529f\u80fd\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d7ae4913a08637a69788c\/5-0.png\" alt=\"kafka\" \/><\/div>\n<h2>KSQL \u662f\u4ec0\u4e48\uff1f<\/h2>\n<p>KSQL\u662f\u7531Confluent\u5f00\u53d1\u7684\u4e00\u6b3e\u5f00\u6e90\u4ea7\u54c1\uff0c\u5728Kafka\u4e0a\u4f7f\u7528SQL\u7684\u6258\u7ba1\u5e73\u53f0\u670d\u52a1\u548c\u6d41\u5904\u7406\u529f\u80fd\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Web: https:\/\/www.confluent.io\/product\/ksql\/<\/ul>\n<\/li>\n<\/ul>\n<p>GitHub: https:\/\/github.com\/confluentinc\/ksql<\/p>\n<p>Documents: https:\/\/github.com\/confluentinc\/ksql\/tree\/0.1.x\/docs\/<\/p>\n<p>Blog Post: https:\/\/www.confluent.io\/blog\/ksql-open-source-streaming-sql-for-apache-kafka\/<\/p>\n<p>\u8fd9\u4e2a\u5e94\u7528\u7a0b\u5e8f\u4f3c\u4e4e\u53ef\u4ee5\u7528\u4e8e\u4ece\u65e5\u5fd7\u6570\u636e\u4e2d\u68c0\u6d4b\u9519\u8bef\u53d1\u751f\u7b49\u3002<\/p>\n<h2>\u5b89\u88c5<\/h2>\n<p>\u7528 Docker \u542f\u52a8\u5f88\u65b9\u4fbf\u3002\u9996\u5148\u9700\u8981\u4e0b\u8f7d\u4ed3\u5e93\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">$<\/span> git clone git@github.com:confluentinc\/ksql.git\r\n<span class=\"go\">Cloning into 'ksql'...\r\nremote: Counting objects: 17903, done.\r\nremote: Total 17903 (delta 0), reused 0 (delta 0), pack-reused 17903\r\nReceiving objects: 100% (17903\/17903), 4.14 MiB | 560.00 KiB\/s, done.\r\nResolving deltas: 100% (8522\/8522), done.\r\n<\/span><\/code><\/pre>\n<p>\u53ea\u9700\u5728 ksql\/docs\/quickstart \u4e2d\u8fd0\u884c docker-compose up\uff0c\u5373\u53ef\u542f\u52a8 Kafka\u3001Zookeeper \u548c KSQL\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">$<\/span> <span class=\"nb\">cd <\/span>ksql\/docs\/quickstart \r\n<span class=\"gp\">$<\/span> <span class=\"nb\">ls<\/span>\r\n<span class=\"go\">README.md                   docker-compose.yml          ksql-quickstart-schemas.jpg quickstart-docker.md        quickstart-non-docker.md\r\n<\/span><span class=\"gp\">$<\/span> docker-compose up <span class=\"nt\">-d<\/span>\r\n<span class=\"go\">Creating network \"quickstart_default\" with the default driver\r\nPulling zookeeper (confluentinc\/cp-zookeeper:latest)...\r\nlatest: Pulling from confluentinc\/cp-zookeeper\r\n<\/span><span class=\"c\">...\r\n<\/span><span class=\"gp\">$<\/span> docker-compose ps\r\n<span class=\"go\">               Name                              Command               State                           Ports                          \r\n-------------------------------------------------------------------------------------------------------------------------------------\r\n<\/span><span class=\"gp\">quickstart_kafka_1                    \/etc\/confluent\/docker\/run        Up      0.0.0.0:29092-&gt;<\/span>29092\/tcp, 0.0.0.0:9092-&gt;9092\/tcp       \r\n<span class=\"go\">quickstart_ksql-cli_1                 perl -e while(1){ sleep 99 ...   Up                                                             \r\nquickstart_ksql-datagen-pageviews_1   bash -c echo Waiting for K ...   Up                                                             \r\nquickstart_ksql-datagen-users_1       bash -c echo Waiting for K ...   Up                                                             \r\n<\/span><span class=\"gp\">quickstart_schema-registry_1          \/etc\/confluent\/docker\/run        Up      0.0.0.0:8081-&gt;<\/span>8081\/tcp                                 \r\n<span class=\"gp\">quickstart_zookeeper_1                \/etc\/confluent\/docker\/run        Up      2181\/tcp, 2888\/tcp, 0.0.0.0:32181-&gt;<\/span>32181\/tcp, 3888\/tcp\r\n<\/code><\/pre>\n<p>\u8981\u8fdb\u5165\u5bb9\u5668\u5185\u7684KSQL CLI\uff0c\u9700\u8981\u4f7f\u7528docker-compose exec\u547d\u4ee4\u3002\u53ea\u9700\u8981\u76f4\u63a5\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u5373\u53ef\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">$<\/span> docker-compose <span class=\"nb\">exec <\/span>ksql-cli ksql-cli <span class=\"nb\">local<\/span> <span class=\"nt\">--bootstrap-server<\/span> kafka:29092\r\n<span class=\"go\">                       ======================================\r\n                       =      _  __ _____  ____  _          =\r\n                       =     | |\/ \/\/ ____|\/ __ \\| |         =\r\n                       =     | ' \/| (___ | |  | | |         =\r\n                       =     |  &lt;  \\___ \\| |  | | |         =\r\n                       =     | . \\ ____) | |__| | |____     =\r\n                       =     |_|\\_\\_____\/ \\___\\_\\______|    =\r\n                       =                                    =\r\n                       =   Streaming SQL Engine for Kafka   =\r\nCopyright 2017 Confluent Inc.                         \r\n\r\nCLI v0.1, Server v0.1 located at http:\/\/localhost:9098\r\n\r\nHaving trouble? Type 'help' (case-insensitive) for a rundown of how things work!\r\n\r\n<\/span><span class=\"gp\">ksql&gt;<\/span> \r\n<\/code><\/pre>\n<h2>\u521b\u5efa\u6d41\u548c\u8868<\/h2>\n<p>\u5728\u5feb\u901f\u5165\u95e8\u4e2d\uff0c\u6211\u4eec\u4ee5\u5177\u6709\u4ee5\u4e0b\u6a21\u5f0f\u7684\u9875\u9762\u6d4f\u89c8\u91cf\uff08pageviews\uff09\u548c\u7528\u6237\uff08users\uff09\u4f5c\u4e3a\u793a\u4f8b\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d7ae4913a08637a69788c\/19-0.jpg\" alt=\"\" \/><\/div>\n<p>\u4e3a\u4e86\u4ece\u9875\u9762\u6d4f\u89c8\u91cf\u548c\u7528\u6237\u4e2d\u521b\u5efa\u6d41\u548c\u8868\uff0c\u8bf7\u6267\u884c\u4ee5\u4e0b\u67e5\u8be2\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">-- \u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u4f5c\u6210 <\/span>\r\n<span class=\"k\">CREATE<\/span> <span class=\"n\">STREAM<\/span> <span class=\"n\">pageviews_original<\/span><span class=\"p\">(<\/span>\r\n  <span class=\"n\">viewtime<\/span> <span class=\"nb\">bigint<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"n\">userid<\/span> <span class=\"nb\">varchar<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"n\">pageid<\/span> <span class=\"nb\">varchar<\/span>\r\n<span class=\"p\">)<\/span> <span class=\"k\">WITH<\/span><span class=\"p\">(<\/span>\r\n  <span class=\"n\">kafka_topic<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'pageviews'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"n\">value_format<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'DELIMITED'<\/span>\r\n<span class=\"p\">);<\/span>\r\n\r\n<span class=\"c1\">-- \u30c6\u30fc\u30d6\u30eb\u306e\u4f5c\u6210<\/span>\r\n<span class=\"k\">CREATE<\/span> <span class=\"k\">TABLE<\/span> <span class=\"n\">users_original<\/span><span class=\"p\">(<\/span>\r\n  <span class=\"n\">registertime<\/span> <span class=\"nb\">bigint<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"n\">gender<\/span> <span class=\"nb\">varchar<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"n\">regionid<\/span> <span class=\"nb\">varchar<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"n\">userid<\/span> <span class=\"nb\">varchar<\/span>\r\n<span class=\"p\">)<\/span> <span class=\"k\">WITH<\/span><span class=\"p\">(<\/span>\r\n  <span class=\"n\">kafka_topic<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'users'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"n\">value_format<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'JSON'<\/span>\r\n<span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<p>\u6211\u4f1a\u5728KSQL CLI\u4e0a\u8fd0\u884c\u4e00\u4e0b\u3002\u5b83\u88ab\u6b63\u786e\u521b\u5efa\u4e86\u3002\u81ea\u52a8\u521b\u5efa\u4e86\u4e24\u5217\uff0c\u5206\u522b\u547d\u540d\u4e3aROWTIME\u548cROWKEY\u3002ROWTIME\u5217\u5b58\u50a8\u4e86Kafka\u6d88\u606f\u7684\u65f6\u95f4\u6233\uff0cROWKEY\u5217\u5b58\u50a8\u4e86\u6d88\u606f\u7684\u952e\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">ksql<\/span><span class=\"o\">&gt;<\/span> <span class=\"k\">CREATE<\/span> <span class=\"n\">STREAM<\/span> <span class=\"n\">pageviews_original<\/span> <span class=\"p\">(<\/span><span class=\"n\">viewtime<\/span> <span class=\"nb\">bigint<\/span><span class=\"p\">,<\/span> <span class=\"n\">userid<\/span> <span class=\"nb\">varchar<\/span><span class=\"p\">,<\/span> <span class=\"n\">pageid<\/span> <span class=\"nb\">varchar<\/span><span class=\"p\">)<\/span> <span class=\"k\">WITH<\/span> <span class=\"p\">(<\/span><span class=\"n\">kafka_topic<\/span><span class=\"o\">=<\/span><span class=\"s1\">'pageviews'<\/span><span class=\"p\">,<\/span> <span class=\"n\">value_format<\/span><span class=\"o\">=<\/span><span class=\"s1\">'DELIMITED'<\/span><span class=\"p\">);<\/span>\r\n\r\n <span class=\"n\">Message<\/span>        \r\n<span class=\"c1\">----------------<\/span>\r\n <span class=\"n\">Stream<\/span> <span class=\"n\">created<\/span> \r\n<span class=\"n\">ksql<\/span><span class=\"o\">&gt;<\/span> <span class=\"k\">DESCRIBE<\/span> <span class=\"n\">pageviews_original<\/span><span class=\"p\">;<\/span>\r\n\r\n <span class=\"n\">Field<\/span>    <span class=\"o\">|<\/span> <span class=\"k\">Type<\/span>            \r\n<span class=\"c1\">----------------------------<\/span>\r\n <span class=\"n\">ROWTIME<\/span>  <span class=\"o\">|<\/span> <span class=\"nb\">BIGINT<\/span>          \r\n <span class=\"n\">ROWKEY<\/span>   <span class=\"o\">|<\/span> <span class=\"nb\">VARCHAR<\/span><span class=\"p\">(<\/span><span class=\"n\">STRING<\/span><span class=\"p\">)<\/span> \r\n <span class=\"n\">VIEWTIME<\/span> <span class=\"o\">|<\/span> <span class=\"nb\">BIGINT<\/span>          \r\n <span class=\"n\">USERID<\/span>   <span class=\"o\">|<\/span> <span class=\"nb\">VARCHAR<\/span><span class=\"p\">(<\/span><span class=\"n\">STRING<\/span><span class=\"p\">)<\/span> \r\n <span class=\"n\">PAGEID<\/span>   <span class=\"o\">|<\/span> <span class=\"nb\">VARCHAR<\/span><span class=\"p\">(<\/span><span class=\"n\">STRING<\/span><span class=\"p\">)<\/span> \r\n\r\n<span class=\"n\">ksql<\/span><span class=\"o\">&gt;<\/span> <span class=\"k\">CREATE<\/span> <span class=\"k\">TABLE<\/span> <span class=\"n\">users_original<\/span> <span class=\"p\">(<\/span><span class=\"n\">registertime<\/span> <span class=\"nb\">bigint<\/span><span class=\"p\">,<\/span> <span class=\"n\">gender<\/span> <span class=\"nb\">varchar<\/span><span class=\"p\">,<\/span> <span class=\"n\">regionid<\/span> <span class=\"nb\">varchar<\/span><span class=\"p\">,<\/span> <span class=\"n\">userid<\/span> <span class=\"nb\">varchar<\/span><span class=\"p\">)<\/span> <span class=\"k\">WITH<\/span> <span class=\"p\">(<\/span><span class=\"n\">kafka_topic<\/span><span class=\"o\">=<\/span><span class=\"s1\">'users'<\/span><span class=\"p\">,<\/span> <span class=\"n\">value_format<\/span><span class=\"o\">=<\/span><span class=\"s1\">'JSON'<\/span><span class=\"p\">);<\/span>\r\n\r\n <span class=\"n\">Message<\/span>       \r\n<span class=\"c1\">---------------<\/span>\r\n <span class=\"k\">Table<\/span> <span class=\"n\">created<\/span> \r\n<span class=\"n\">ksql<\/span><span class=\"o\">&gt;<\/span> <span class=\"k\">DESCRIBE<\/span> <span class=\"n\">users_original<\/span><span class=\"p\">;<\/span>\r\n\r\n <span class=\"n\">Field<\/span>        <span class=\"o\">|<\/span> <span class=\"k\">Type<\/span>            \r\n<span class=\"c1\">--------------------------------<\/span>\r\n <span class=\"n\">ROWTIME<\/span>      <span class=\"o\">|<\/span> <span class=\"nb\">BIGINT<\/span>          \r\n <span class=\"n\">ROWKEY<\/span>       <span class=\"o\">|<\/span> <span class=\"nb\">VARCHAR<\/span><span class=\"p\">(<\/span><span class=\"n\">STRING<\/span><span class=\"p\">)<\/span> \r\n <span class=\"n\">REGISTERTIME<\/span> <span class=\"o\">|<\/span> <span class=\"nb\">BIGINT<\/span>          \r\n <span class=\"n\">GENDER<\/span>       <span class=\"o\">|<\/span> <span class=\"nb\">VARCHAR<\/span><span class=\"p\">(<\/span><span class=\"n\">STRING<\/span><span class=\"p\">)<\/span> \r\n <span class=\"n\">REGIONID<\/span>     <span class=\"o\">|<\/span> <span class=\"nb\">VARCHAR<\/span><span class=\"p\">(<\/span><span class=\"n\">STRING<\/span><span class=\"p\">)<\/span> \r\n <span class=\"n\">USERID<\/span>       <span class=\"o\">|<\/span> <span class=\"nb\">VARCHAR<\/span><span class=\"p\">(<\/span><span class=\"n\">STRING<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>\u8981\u83b7\u53d6\u6d41\u548c\u8868\u7684\u5217\u8868\uff0c\u8bf7\u6267\u884c\u4ee5\u4e0b\u67e5\u8be2\u8bed\u53e5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">ksql<\/span><span class=\"o\">&gt;<\/span> <span class=\"k\">SHOW<\/span> <span class=\"n\">STREAMS<\/span><span class=\"p\">;<\/span>\r\n\r\n <span class=\"n\">Stream<\/span> <span class=\"n\">Name<\/span>              <span class=\"o\">|<\/span> <span class=\"n\">Kafka<\/span> <span class=\"n\">Topic<\/span>              <span class=\"o\">|<\/span> <span class=\"n\">Format<\/span>    \r\n<span class=\"c1\">-----------------------------------------------------------------<\/span>\r\n <span class=\"n\">PAGEVIEWS_ORIGINAL<\/span>       <span class=\"o\">|<\/span> <span class=\"n\">pageviews<\/span>                <span class=\"o\">|<\/span> <span class=\"n\">DELIMITED<\/span> \r\n\r\n<span class=\"n\">ksql<\/span><span class=\"o\">&gt;<\/span> <span class=\"k\">SHOW<\/span> <span class=\"n\">TABLES<\/span><span class=\"p\">;<\/span>\r\n\r\n <span class=\"k\">Table<\/span> <span class=\"n\">Name<\/span>        <span class=\"o\">|<\/span> <span class=\"n\">Kafka<\/span> <span class=\"n\">Topic<\/span>       <span class=\"o\">|<\/span> <span class=\"n\">Format<\/span>    <span class=\"o\">|<\/span> <span class=\"n\">Windowed<\/span> \r\n<span class=\"c1\">--------------------------------------------------------------<\/span>\r\n <span class=\"n\">USERS_ORIGINAL<\/span>    <span class=\"o\">|<\/span> <span class=\"n\">users<\/span>             <span class=\"o\">|<\/span> <span class=\"n\">JSON<\/span>      <span class=\"o\">|<\/span> <span class=\"k\">false<\/span>   \r\n<\/code><\/pre>\n<h2>\u67e5\u8be2\u7684\u5199\u6cd5 (In Chinese: Chaxun de xiefa)<\/h2>\n<h3>\u901a\u8fc7SELECT\u83b7\u53d6\u6d88\u606f<\/h3>\n<p>\u5728SELECT\u8bed\u53e5\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4ece\u6d41\u4e2d\u83b7\u53d6\u6570\u636e\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u4f3c\u4e4e\u53ef\u4ee5\u83b7\u53d6\u5230\u67e5\u8be2\u6267\u884c\u4e4b\u540e\u7684\u6d88\u606f\u3002\u5982\u679c\u4e0d\u8bbe\u7f6e\u9650\u5236\uff08LIMIT\uff09\uff0c\u6d88\u606f\u4f1a\u4e0d\u65ad\u663e\u793a\u3002\u5f53\u60a8\u60f3\u7ed3\u675f\u83b7\u53d6\u6570\u636e\u65f6\uff0c\u8bf7\u6267\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">ksql<\/span><span class=\"o\">&gt;<\/span> <span class=\"k\">SELECT<\/span> <span class=\"n\">pageid<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">pageviews_original<\/span> <span class=\"k\">LIMIT<\/span> <span class=\"mi\">3<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">Page_51<\/span>\r\n<span class=\"n\">Page_37<\/span>\r\n<span class=\"n\">Page_75<\/span>\r\n<span class=\"k\">LIMIT<\/span> <span class=\"n\">reached<\/span> <span class=\"k\">for<\/span> <span class=\"n\">the<\/span> <span class=\"n\">partition<\/span><span class=\"p\">.<\/span>\r\n<span class=\"n\">Query<\/span> <span class=\"n\">terminated<\/span>\r\n<\/code><\/pre>\n<h3>\u521b\u5efa\u4f7f\u7528\u5176\u4ed6\u6d41\u6216\u8868\u7684\u6d41\u3002<\/h3>\n<p>\u60a8\u53ef\u4ee5\u521b\u5efa\u591a\u4e2a\u6d41\u6216\u8868\uff0c\u5e76\u521b\u5efa\u65b0\u7684\u6d41\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u6b63\u5728\u521b\u5efa\u4e00\u4e2a\u7528\u4e8e\u83b7\u53d6\u6027\u522b\u4e3a\u5973\u6027\u7684\u7528\u6237\u9875\u9762\u6d4f\u89c8\u4fe1\u606f\u7684\u6d41\u3002\u7ed3\u679c\u5c06\u6d41\u7ecfKafka\u7684PAGEVIEWS_FEMALE\u4e3b\u9898\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">CREATE<\/span> <span class=\"n\">STREAM<\/span> <span class=\"n\">pageviews_female<\/span> <span class=\"k\">AS<\/span>\r\n<span class=\"k\">SELECT<\/span>\r\n  <span class=\"n\">users_original<\/span><span class=\"p\">.<\/span><span class=\"n\">userid<\/span> <span class=\"k\">AS<\/span> <span class=\"n\">userid<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"n\">pageid<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"n\">regionid<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"n\">gender<\/span>\r\n<span class=\"k\">FROM<\/span>\r\n  <span class=\"n\">pageviews_original<\/span>\r\n  <span class=\"k\">LEFT<\/span> <span class=\"k\">JOIN<\/span>\r\n    <span class=\"n\">users_original<\/span>\r\n  <span class=\"k\">ON<\/span>  <span class=\"n\">pageviews_original<\/span><span class=\"p\">.<\/span><span class=\"n\">userid<\/span> <span class=\"o\">=<\/span> <span class=\"n\">users_original<\/span><span class=\"p\">.<\/span><span class=\"n\">userid<\/span>\r\n<span class=\"k\">WHERE<\/span>\r\n  <span class=\"n\">gender<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'FEMALE'<\/span>\r\n<span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"n\">ksql<\/span><span class=\"o\">&gt;<\/span> <span class=\"k\">CREATE<\/span> <span class=\"n\">STREAM<\/span> <span class=\"n\">pageviews_female<\/span> <span class=\"k\">AS<\/span> <span class=\"k\">SELECT<\/span> <span class=\"n\">users_original<\/span><span class=\"p\">.<\/span><span class=\"n\">userid<\/span> <span class=\"k\">AS<\/span> <span class=\"n\">userid<\/span><span class=\"p\">,<\/span> <span class=\"n\">pageid<\/span><span class=\"p\">,<\/span> <span class=\"n\">regionid<\/span><span class=\"p\">,<\/span> <span class=\"n\">gender<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">pageviews_original<\/span> <span class=\"k\">LEFT<\/span> <span class=\"k\">JOIN<\/span> <span class=\"n\">users_original<\/span> <span class=\"k\">ON<\/span> <span class=\"n\">pageviews_original<\/span><span class=\"p\">.<\/span><span class=\"n\">userid<\/span> <span class=\"o\">=<\/span> <span class=\"n\">users_original<\/span><span class=\"p\">.<\/span><span class=\"n\">userid<\/span> <span class=\"k\">WHERE<\/span> <span class=\"n\">gender<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'FEMALE'<\/span><span class=\"p\">;<\/span>\r\n\r\n <span class=\"n\">Message<\/span>                    \r\n<span class=\"c1\">----------------------------<\/span>\r\n <span class=\"n\">Stream<\/span> <span class=\"n\">created<\/span> <span class=\"k\">and<\/span> <span class=\"n\">running<\/span> \r\n<span class=\"n\">ksql<\/span><span class=\"o\">&gt;<\/span> <span class=\"k\">DESCRIBE<\/span> <span class=\"n\">pageviews_female<\/span><span class=\"p\">;<\/span>\r\n\r\n <span class=\"n\">Field<\/span>    <span class=\"o\">|<\/span> <span class=\"k\">Type<\/span>            \r\n<span class=\"c1\">----------------------------<\/span>\r\n <span class=\"n\">ROWTIME<\/span>  <span class=\"o\">|<\/span> <span class=\"nb\">BIGINT<\/span>          \r\n <span class=\"n\">ROWKEY<\/span>   <span class=\"o\">|<\/span> <span class=\"nb\">VARCHAR<\/span><span class=\"p\">(<\/span><span class=\"n\">STRING<\/span><span class=\"p\">)<\/span> \r\n <span class=\"n\">USERID<\/span>   <span class=\"o\">|<\/span> <span class=\"nb\">VARCHAR<\/span><span class=\"p\">(<\/span><span class=\"n\">STRING<\/span><span class=\"p\">)<\/span> \r\n <span class=\"n\">PAGEID<\/span>   <span class=\"o\">|<\/span> <span class=\"nb\">VARCHAR<\/span><span class=\"p\">(<\/span><span class=\"n\">STRING<\/span><span class=\"p\">)<\/span> \r\n <span class=\"n\">REGIONID<\/span> <span class=\"o\">|<\/span> <span class=\"nb\">VARCHAR<\/span><span class=\"p\">(<\/span><span class=\"n\">STRING<\/span><span class=\"p\">)<\/span> \r\n <span class=\"n\">GENDER<\/span>   <span class=\"o\">|<\/span> <span class=\"nb\">VARCHAR<\/span><span class=\"p\">(<\/span><span class=\"n\">STRING<\/span><span class=\"p\">)<\/span> \r\n<\/code><\/pre>\n<p>\u6211\u5c1d\u8bd5\u6267\u884cSELECT\u8bed\u53e5\uff0c\u4ec5\u6210\u529f\u83b7\u53d6\u5230FEMALE\u7684\u6570\u636e\uff01<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">ksql<\/span><span class=\"o\">&gt;<\/span> <span class=\"k\">SELECT<\/span> <span class=\"o\">*<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">pageviews_female<\/span> <span class=\"k\">LIMIT<\/span> <span class=\"mi\">3<\/span><span class=\"p\">;<\/span>\r\n<span class=\"mi\">1503994511734<\/span> <span class=\"o\">|<\/span> <span class=\"n\">User_7<\/span> <span class=\"o\">|<\/span> <span class=\"n\">User_7<\/span> <span class=\"o\">|<\/span> <span class=\"n\">Page_54<\/span> <span class=\"o\">|<\/span> <span class=\"n\">Region_1<\/span> <span class=\"o\">|<\/span> <span class=\"n\">FEMALE<\/span>\r\n<span class=\"mi\">1503994518152<\/span> <span class=\"o\">|<\/span> <span class=\"n\">User_5<\/span> <span class=\"o\">|<\/span> <span class=\"n\">User_5<\/span> <span class=\"o\">|<\/span> <span class=\"n\">Page_94<\/span> <span class=\"o\">|<\/span> <span class=\"n\">Region_3<\/span> <span class=\"o\">|<\/span> <span class=\"n\">FEMALE<\/span>\r\n<span class=\"mi\">1503994519403<\/span> <span class=\"o\">|<\/span> <span class=\"n\">User_5<\/span> <span class=\"o\">|<\/span> <span class=\"n\">User_5<\/span> <span class=\"o\">|<\/span> <span class=\"n\">Page_14<\/span> <span class=\"o\">|<\/span> <span class=\"n\">Region_3<\/span> <span class=\"o\">|<\/span> <span class=\"n\">FEMALE<\/span>\r\n<span class=\"k\">LIMIT<\/span> <span class=\"n\">reached<\/span> <span class=\"k\">for<\/span> <span class=\"n\">the<\/span> <span class=\"n\">partition<\/span><span class=\"p\">.<\/span>\r\n<span class=\"n\">Query<\/span> <span class=\"n\">terminated<\/span>\r\n<\/code><\/pre>\n<h3>\u57fa\u4e8e\u559c\u597d\u7684\u7b5b\u9009<\/h3>\n<p>\u770b\u8d77\u6765\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528LIKE\u53e5\u6765\u8fdb\u4e00\u6b65\u7b5b\u9009\u6570\u636e\uff0c\u5e76\u4e14\u8fd8\u53ef\u4ee5\u6307\u5b9a\u4e3b\u9898\u540d\u79f0\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">CREATE<\/span> <span class=\"n\">STREAM<\/span> <span class=\"n\">pageviews_female_like_89<\/span> <span class=\"k\">WITH<\/span><span class=\"p\">(<\/span>\r\n  <span class=\"n\">kafka_topic<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'pageviews_enriched_r8_r9'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"n\">value_format<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'DELIMITED'<\/span>\r\n<span class=\"p\">)<\/span> <span class=\"k\">AS<\/span>\r\n<span class=\"k\">SELECT<\/span>\r\n  <span class=\"o\">*<\/span>\r\n<span class=\"k\">FROM<\/span>\r\n  <span class=\"n\">pageviews_female<\/span>\r\n<span class=\"k\">WHERE<\/span>\r\n  <span class=\"n\">regionid<\/span> <span class=\"k\">LIKE<\/span> <span class=\"s1\">'%_8'<\/span>\r\n<span class=\"k\">OR<\/span>  <span class=\"n\">regionid<\/span> <span class=\"k\">LIKE<\/span> <span class=\"s1\">'%_9'<\/span>\r\n<span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h3>\u7a97\u6237\u5904\u7406<\/h3>\n<p>\u5728\u6d41\u5904\u7406\u4e2d\uff0c\u60a8\u8fd8\u53ef\u4ee5\u6267\u884c\u91cd\u8981\u7684\u7a97\u53e3\u5904\u7406\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u5c06\u6839\u636e\u5730\u533a\u4ecepageviews_female\u4e2d\u83b7\u53d6\u9875\u9762\u6d4f\u89c8\u91cf\u8fdb\u884c\u6c47\u603b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">CREATE<\/span> <span class=\"k\">TABLE<\/span> <span class=\"n\">pageviews_regions<\/span> <span class=\"k\">AS<\/span>\r\n<span class=\"k\">SELECT<\/span>\r\n  <span class=\"n\">gender<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"n\">regionid<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"k\">COUNT<\/span><span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"p\">)<\/span> <span class=\"k\">AS<\/span> <span class=\"n\">numusers<\/span>\r\n<span class=\"k\">FROM<\/span>\r\n  <span class=\"n\">pageviews_female<\/span> <span class=\"n\">WINDOW<\/span> <span class=\"n\">TUMBLING<\/span><span class=\"p\">(<\/span>\r\n    <span class=\"k\">size<\/span> <span class=\"mi\">30<\/span> <span class=\"k\">second<\/span>\r\n  <span class=\"p\">)<\/span>\r\n<span class=\"k\">GROUP<\/span> <span class=\"k\">BY<\/span>\r\n  <span class=\"n\">gender<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"n\">regionid<\/span>\r\n<span class=\"k\">HAVING<\/span> <span class=\"k\">COUNT<\/span><span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"p\">)<\/span> <span class=\"o\">&gt;<\/span> <span class=\"mi\">1<\/span>\r\n<span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u83b7\u53d6\u5df2\u521b\u5efa\u7684 pageviews_regions \u6d41\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">ksql<\/span><span class=\"o\">&gt;<\/span> <span class=\"k\">SELECT<\/span> <span class=\"n\">regionid<\/span><span class=\"p\">,<\/span> <span class=\"n\">numusers<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">pageviews_regions<\/span> <span class=\"k\">LIMIT<\/span> <span class=\"mi\">5<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">Region_8<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">3<\/span>\r\n<span class=\"n\">Region_8<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">4<\/span>\r\n<span class=\"n\">Region_6<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">2<\/span>\r\n<span class=\"n\">Region_4<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">2<\/span>\r\n<span class=\"n\">Region_6<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">4<\/span>\r\n<span class=\"k\">LIMIT<\/span> <span class=\"n\">reached<\/span> <span class=\"k\">for<\/span> <span class=\"n\">the<\/span> <span class=\"n\">partition<\/span><span class=\"p\">.<\/span>\r\n<span class=\"n\">Query<\/span> <span class=\"n\">terminated<\/span>\r\n<\/code><\/pre>\n<h3>\u67e5\u770b\u67e5\u8be2<\/h3>\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528 SHOW QUERIES \u83b7\u53d6\u5df2\u6267\u884c\u7684\u67e5\u8be2\u5217\u8868\u3002\u65e0\u6cd5\u8f93\u51fa\u901a\u8fc7 SELECT \u83b7\u53d6\u6d88\u606f\u6216\u50cf\u6700\u521d\u6267\u884c\u7684 CREATE STREAM \u8fd9\u6837\u7684\u67e5\u8be2\u3002\u53ea\u4f1a\u663e\u793a\u8f93\u51fa\u5230\u7279\u5b9a Kafka \u4e3b\u9898\u7684\u67e5\u8be2\u7ed3\u679c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">SHOW<\/span> <span class=\"n\">QUERIES<\/span><span class=\"p\">;<\/span>\r\n\r\n <span class=\"n\">Query<\/span> <span class=\"n\">ID<\/span> <span class=\"o\">|<\/span> <span class=\"n\">Kafka<\/span> <span class=\"n\">Topic<\/span>       <span class=\"o\">|<\/span> <span class=\"n\">Query<\/span> <span class=\"n\">String<\/span>                                                                                                                                                                                                                      \r\n<span class=\"c1\">------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------<\/span>\r\n <span class=\"mi\">1<\/span>        <span class=\"o\">|<\/span> <span class=\"n\">PAGEVIEWS_FEMALE<\/span>  <span class=\"o\">|<\/span> <span class=\"k\">CREATE<\/span> <span class=\"n\">STREAM<\/span> <span class=\"n\">pageviews_female<\/span> <span class=\"k\">AS<\/span> <span class=\"k\">SELECT<\/span> <span class=\"n\">users_original<\/span><span class=\"p\">.<\/span><span class=\"n\">userid<\/span> <span class=\"k\">AS<\/span> <span class=\"n\">userid<\/span><span class=\"p\">,<\/span> <span class=\"n\">pageid<\/span><span class=\"p\">,<\/span> <span class=\"n\">regionid<\/span><span class=\"p\">,<\/span> <span class=\"n\">gender<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">pageviews_original<\/span> <span class=\"k\">LEFT<\/span> <span class=\"k\">JOIN<\/span> <span class=\"n\">users_original<\/span> <span class=\"k\">ON<\/span> <span class=\"n\">pageviews_original<\/span><span class=\"p\">.<\/span><span class=\"n\">userid<\/span> <span class=\"o\">=<\/span> <span class=\"n\">users_original<\/span><span class=\"p\">.<\/span><span class=\"n\">userid<\/span> <span class=\"k\">WHERE<\/span> <span class=\"n\">gender<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'FEMALE'<\/span><span class=\"p\">;<\/span> \r\n <span class=\"mi\">2<\/span>        <span class=\"o\">|<\/span> <span class=\"n\">pageviews_enriched_r8_r9<\/span> <span class=\"o\">|<\/span> <span class=\"k\">CREATE<\/span> <span class=\"n\">STREAM<\/span> <span class=\"n\">pageviews_female_like_89<\/span> <span class=\"k\">WITH<\/span> <span class=\"p\">(<\/span><span class=\"n\">kafka_topic<\/span><span class=\"o\">=<\/span><span class=\"s1\">'pageviews_enriched_r8_r9'<\/span><span class=\"p\">,<\/span> <span class=\"n\">value_format<\/span><span class=\"o\">=<\/span><span class=\"s1\">'DELIMITED'<\/span><span class=\"p\">)<\/span> <span class=\"k\">AS<\/span> <span class=\"k\">SELECT<\/span> <span class=\"o\">*<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">pageviews_female<\/span> <span class=\"k\">WHERE<\/span> <span class=\"n\">regionid<\/span> <span class=\"k\">LIKE<\/span> <span class=\"s1\">'%_8'<\/span> <span class=\"k\">OR<\/span> <span class=\"n\">regionid<\/span> <span class=\"k\">LIKE<\/span> <span class=\"s1\">'%_9'<\/span><span class=\"p\">;<\/span>     \r\n <span class=\"mi\">3<\/span>        <span class=\"o\">|<\/span> <span class=\"n\">PAGEVIEWS_REGIONS<\/span> <span class=\"o\">|<\/span> <span class=\"k\">CREATE<\/span> <span class=\"k\">TABLE<\/span> <span class=\"n\">pageviews_regions<\/span> <span class=\"k\">AS<\/span> <span class=\"k\">SELECT<\/span> <span class=\"n\">gender<\/span><span class=\"p\">,<\/span> <span class=\"n\">regionid<\/span> <span class=\"p\">,<\/span> <span class=\"k\">COUNT<\/span><span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"p\">)<\/span> <span class=\"k\">AS<\/span> <span class=\"n\">numusers<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">pageviews_female<\/span> <span class=\"n\">WINDOW<\/span> <span class=\"n\">TUMBLING<\/span> <span class=\"p\">(<\/span><span class=\"k\">size<\/span> <span class=\"mi\">30<\/span> <span class=\"k\">second<\/span><span class=\"p\">)<\/span> <span class=\"k\">GROUP<\/span> <span class=\"k\">BY<\/span> <span class=\"n\">gender<\/span><span class=\"p\">,<\/span> <span class=\"n\">regionid<\/span> <span class=\"k\">HAVING<\/span> <span class=\"k\">COUNT<\/span><span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"p\">)<\/span> <span class=\"o\">&gt;<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>     \r\n<\/code><\/pre>\n<h2>\u6536\u62fe<\/h2>\n<p>\u505c\u6b62\u67e5\u8be2\u53ef\u4ee5\u4f7f\u7528 TERMINATE\u3002\u8bf7\u6307\u5b9a\u67e5\u8be2 ID\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">ksql<\/span><span class=\"o\">&gt;<\/span> <span class=\"k\">TERMINATE<\/span> <span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u8981\u9000\u51fa KSQL CLI\uff0c\u8bf7\u6267\u884c exit \u547d\u4ee4\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">ksql<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">exit<\/span>\r\n<span class=\"n\">Exiting<\/span> <span class=\"n\">KSQL<\/span><span class=\"p\">.<\/span>\r\n<\/code><\/pre>\n<p>\u4e0d\u8981\u5fd8\u8bb0\u505c\u6b62\u5bb9\u5668\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">$<\/span> docker-compose down\r\n<span class=\"go\">Stopping quickstart_ksql-cli_1 ... done\r\nStopping quickstart_ksql-datagen-users_1 ... done\r\nStopping quickstart_ksql-datagen-pageviews_1 ... done\r\nStopping quickstart_schema-registry_1 ... done\r\nStopping quickstart_kafka_1 ... done\r\nStopping quickstart_zookeeper_1 ... done\r\nRemoving quickstart_ksql-cli_1 ... done\r\nRemoving quickstart_ksql-datagen-users_1 ... done\r\nRemoving quickstart_ksql-datagen-pageviews_1 ... done\r\nRemoving quickstart_schema-registry_1 ... done\r\nRemoving quickstart_kafka_1 ... done\r\nRemoving quickstart_zookeeper_1 ... done\r\nRemoving network quickstart_default\r\n<\/span><\/code><\/pre>\n<h2>\u5fc3\u5f97<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u8907\u6570\u306e\u30c8\u30d4\u30c3\u30af\u306b\u307e\u305f\u304c\u3063\u305f\u96c6\u8a08\u51e6\u7406\u304c\u7c21\u5358\u306b\u66f8\u3051\u3066\u4fbf\u5229<\/ul>\n<\/li>\n<\/ul>\n<p>\u96c6\u8a08\u7d50\u679c\u3092\u7279\u5b9a\u306e\u30c8\u30d4\u30c3\u30af\u306b\u307e\u3068\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b<br \/>\n\u30ed\u30b0\u304b\u3089\u30a2\u30e9\u30fc\u30c8\u306b\u6295\u3052\u308b\u3068\u304b\u3001\u30d0\u30c3\u30c1\u51e6\u7406\u306b\u4f7f\u3046\u3068\u304b\u3001\u3044\u308d\u3044\u308d\u3067\u304d\u305d\u3046<\/p>\n<p>\u30b9\u30c8\u30ea\u30fc\u30e0\u3068\u30c6\u30fc\u30d6\u30eb\u306e\u9055\u3044\u304c\u96e3\u3057\u3044\u3002<\/p>\n<p>concepts \u306b\u30b9\u30c8\u30ea\u30fc\u30e0\u3068\u30c6\u30fc\u30d6\u30eb\u306e\u8aac\u660e\u304c\u3042\u308b\u304c\u2026\u3046\u30fc\u3093\uff1f<\/p>\n","protected":false},"excerpt":{"rendered":"<p>KSQL\u7684\u53d1\u5e03\u5df2\u7ecf\u5728Confluent\u5ba3\u5e03\u4e86\u3002\u8fd9\u662f\u4e00\u4e2a\u53ef\u4ee5\u5728Kafka\u4e0a\u8fdb\u884cSQL\u6d41\u5904\u7406\u7684\u5de5\u5177\u3002\u8ba9\u6211\u4eec\u7acb\u5373\u5f00\u59cb [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-46820","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5c1d\u8bd5\u4f7f\u7528\u80fd\u5728 Apache Kafka \u4e0a\u6267\u884c SQL \u7684 KSQL - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5c1d\u8bd5\u4f7f\u7528\u80fd\u5728-apache-kafka-\u4e0a\u6267\u884c-sql-\u7684-ksql\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" 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