SQL 操作常见问题 TiDB 是否支持二级键？ TiDB 在对大表执行 DDL 操作时，性能表现如何？ 如何选择正确的查询计划？是否需要使用优化器提示？还是可以使用提示？ 如何阻止特定的 SQL 语句执行（或者将某个 SQL 语句加入黑名单）？ TiDB 对哪些 MySQL variables 兼容？ 省略 ORDER BY 条件时 TiDB ...

PREVIEW SQL Description Syntax Return Value Description Example Reserved word Related links PREVIEW SQL Description The PREVIEW SQL syntax is used to preview SQL execut...

SQL Translator Configuration Item Explanation SQL Translator Configuration Item Explanation rules : - ! SQL_TRANSLATOR type : # SQL translator type useOriginalSQ...

SQL 类 SQL 类 这里有一些示例： // 匿名内部类风格 public String deletePersonSql () { return new SQL () {{ DELETE_FROM ( "PERSON" ); WHERE ( "ID = #{id}" ); }}. ...

Sql Source Compile & deploy plugin Default build command Sqlserver build command Configuration Global configurations interval url internalSqlQueryCfg templateSqlQueryCfg No...

SQL SQL in source definition SQL queries in rules SQL The SQL language support in eKuiper includes Data Definition Language (DDL), Data Manipulation Language (DML) and Query L...

Date Time Functions Sptial Functions String Functions Aggregate Functions bitmap functions bitwise function json function Encryption and Digest Functions Hash Functions ...

Account Management Administration Data Definition Data Manipulation Data Types Utility

SQL Functions SQL Statements

SQL Placeholders Introduction Basic and positional placeholders bun.Ident bun.Safe IN Model placeholders Global placeholders SQL Placeholders Introduction Bun recognizes...