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  • CN/modules/ROOT/pages/v3.0
  • EN/modules/ROOT/pages/v3.0

‎CN/modules/ROOT/pages/v3.0/1.adoc‎

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IvorySQL 3.0 基于 PostgreSQL 16.0 ，包含来自 PostgreSQL 16.0 的各种修复。有关 PostgreSQL 16.0 中更详细的更新和错误修复，请参阅官方 https://www.postgresql.org/docs/release/16.0/[PostgreSQL 16.0 发行说明] 。
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== 版本差异
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IvorySQL 3.0 版本在架构上发生了很大的变化，其使用方式与 2.3 版本不同。还有一些以前在 2.3 版本中可用的功能尚不受支持，以下是两个版本的功能差异。
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|====
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| 功能模块 | 功能|IvorySQL-2.3|IvorySQL-3.0
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.14+ |内置数据类型|char|不支持|支持
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|varchar|支持|支持
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|varchar2|支持|支持
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|number|不支持|支持
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|binary_float|不支持|支持
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|binary_double|不支持|支持
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|date|支持|支持
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|timestamp|不支持|支持
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|timestamp with time zone|不支持|支持
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|timestamp with local time zone|不支持|支持
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|interval year to month|不支持|支持
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|interval day to second|不支持|支持
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|raw|不支持|支持
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|long|不支持|支持
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.44+|内置函数|char|不支持|支持
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|sysdate|支持|支持
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|systimestamp|支持|支持
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|add_months|支持|支持
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|last_day|支持|支持
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|next_day| 不支持|支持
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|months_between|支持 | 支持
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|current_date | 不支持 | 支持
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|current_timestamp | 不支持 | 支持
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|new_time | 支持 | 支持
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|tz_offset | 不支持 | 支持
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|trunc | 支持 | 支持
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|instr | 不支持 | 支持
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|instrb | 不支持 | 支持
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|substr | 不支持 | 支持
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|substrb | 支持 | 支持
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|trim | 不支持 | 支持
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|ltrim | 不支持 | 支持
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|rtrim | 不支持 | 支持
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|length | 不支持 | 支持
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|lengthb | 不支持 | 支持
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|rawtohex | 不支持 | 支持
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|replace | 不支持 | 支持
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|regexp_replace | 不支持 | 支持
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|regexp_substr | 不支持 | 支持
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|regexp_instr | 不支持 | 支持
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|regexp_like | 不支持 | 支持
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|to_number | 支持 | 支持
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|to_char | 支持 | 支持
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|to_date | 支持 | 支持
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|to_timestamp | 支持 | 支持
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|to_timestamp_tz | 支持 | 支持
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|to_yminterval | 不支持 | 支持
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|to_dsinterval | 支持 | 支持
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|numtodsinterval | 支持 | 支持
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|numtoyminterval | 支持 | 支持
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|localtimestamp | 不支持 | 支持
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|new_time | 不支持 | 支持
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|from_tz | 支持 | 支持
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|sys_extract_utc | 支持 | 支持
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|sessiontimezone | 支持 | 支持
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|hextoraw | 不支持 | 支持
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|uid | 不支持 | 支持
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|USERENV | 不支持 | 支持
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.4+|NLS参数|NLS_LENGTH_SEMANTICS|不支持|支持
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|NLS_DATE_FORMAT|不支持|支持
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|NLS_TIMESTAMP_FORMAT|不支持|支持
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|NLS_TIMESTAMP_TZ_FORMAT|不支持|支持
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|Function（函数）|支持语法兼容，并支持OUT参数|支持 | 支持
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|Procedure（存储过程|支持语法兼容，并支持OUT参数|支持 | 支持
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|Anonymous block（匿名块）|支持语法兼容，并支持OUT参数|不支持 | 支持
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|嵌套子过程|支持嵌套存储过程、函数等|不支持 | 支持
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|Merge|支持PG的Merge功能以及兼容Oralce语法的Merge功能|不支持 | 支持
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|q`|支持兼容的转义符|支持 | 支持
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|关键字处理|支持数据库中关键字的处理|不支持 | 支持
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.5+|对象大小写转换|全部大写加双引号转换为小写|不支持 | 支持
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|全部小写加双引号转换为大写|不支持 | 支持
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|全部小写加双引号转换为大写|不支持 | 支持
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|大小写混合加双引号保持不变|不支持 | 支持
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|不加双引号(默认)全部转为小写|不支持 | 支持
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|Search Path|支持兼容模式下，默认搜索为sys模式，再搜索pg_catalog模式|不支持 | 支持
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|空串|支持Oracle兼容将空串转为NULL|不支持 | 支持
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|词法解析器分离|3.0框架的一部分|不支持 | 支持
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|包||支持|不支持
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|全局唯一索引||支持 | 支持
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|GUC切换oracle或pg||支持 | 支持
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|层级查询||支持 | 不支持
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|NANVL ||支持 | 不支持
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|GREATEST||支持 | 不支持
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|LEAST||支持 | 不支持
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|ADD_DAYS_TO_TIMESTAMP||支持 | 不支持
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|DAYS_BETWEEN ||支持 | 不支持
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|DAYS_BETWEEN_TMTZ ||支持 | 不支持
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|DBTIMEZONE||支持 | 不支持
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|TO_MULTI_BYTE||支持 | 不支持
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|TO_SINGLE_BYTE||支持 | 不支持
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|INTERVAL_TO_SECONDS||支持 |不支持
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|HEX_TO_DECIMAL||支持 | 不支持
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|TO_BINARY_DOUBLE||支持 | 不支持
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|TO_BINARY_FLOAT||支持 | 不支持
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|BIN_TO_NUM||支持 | 不支持
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|====
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== 已知问题
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* 暂无
@@ -75,6 +178,7 @@ IvorySQL主要包含2个代码仓库，数据库IvorySQL代码仓、IvorySQL网
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== 贡献人员
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以下个人作为补丁作者、提交者、审阅者、测试者或问题报告者为本版本做出了贡献。
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- IvorySQL Pro开发及测试团队
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- 谭洋
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- 王杰
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- 穆帅楠
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- 严少安
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- M.Imran Zaheer
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- Yunhe Xu
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- 王皓
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- 董小姐
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- 韩伟博
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‎EN/modules/ROOT/pages/v3.0/1.adoc‎

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:sectnumlevels: 5
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== Versions Inroduction
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== Version Inroduction
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[**Release date: November 17, 2023**]
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IvorySQL 3.0 is based on PostgreSQL 16.0 includes various fixes from PostgreSQL 16.0, For more detailed updates and bug fixes in PostgreSQL 16.0, see the official https://www.postgresql.org/docs/release/16/[PostgreSQL 16.0 Release Notes] .
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IvorySQL 3.0 is based on PostgreSQL 16.0 includes various fixes from PostgreSQL 16.0, for more detailed updates and bug fixes in PostgreSQL 16.0, see the official https://www.postgresql.org/docs/release/16/[PostgreSQL 16.0 Release Notes] .
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== Version differences
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The IvorySQL 3.0 version has undergone a great transformation in its architecture, and its usage is different from that of the 2.3 version. There are also some functions that were previously available in 2.3 that are not yet supported. The following are the differences between the features of the two versions.
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|====
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^e| Functional modules | function|IvorySQL-2.3|IvorySQL-3.0
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.14+|Built-in data types|char|not support|support
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|varchar|support|support
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|varchar2|support|support
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|number|not support|support
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|binary_float|not support|support
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|binary_double|not support|support
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|date|support|support
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|timestamp|not support|support
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|timestamp with time zone|not support|support
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|timestamp with local time zone|not support|support
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|interval year to month|not support|support
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|interval day to second|not support|support
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|raw|not support|support
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|long|not support|support
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.44+|Built-in functions|char|not support|support
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|sysdate|support|support
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|systimestamp|support|support
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|add_months|support|support
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|last_day|support|support
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|next_day|support|support
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|months_between|support|support
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|current_date | not support|support
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|current_timestamp | not support|support
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|new_time |support|support
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|tz_offset | not support|support
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|trunc | support|support
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|instr | not support|support
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|instrb | not support|support
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|substr | not support|support
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|substrb |support|support
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|trim | not support|support
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|ltrim | not support|support
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|rtrim | not support|support
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|length | not support|support
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|lengthb | not support|support
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|rawtohex | not support|support
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|replace | not support|support
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|regexp_replace | not support|support
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|regexp_substr | not support|support
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|regexp_instr | not support|support
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|regexp_like |not support|support
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|to_number | support|support
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|to_char | support|support
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|to_date | support|support
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|to_timestamp | support|support
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|to_timestamp_tz | support|support
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|to_yminterval |not support|support
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|to_dsinterval | support|support
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|numtodsinterval | support|support
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|numtoyminterval | support|support
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|localtimestamp | not support|support
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|new_time | not support|support
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|from_tz | support|support
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|sys_extract_utc | support|support
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|sessiontimezone |support|support
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|hextoraw |not support|support
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|uid | not support|support
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|USERENV | not support|support
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.4+|NLS parameter|NLS_LENGTH_SEMANTICS|not support|support
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|NLS_DATE_FORMAT|not support|support
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|NLS_TIMESTAMP_FORMAT|not support|support
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|NLS_TIMESTAMP_TZ_FORMAT|not support|support
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|Function|Syntax compatibility is supported, and the OUT parameter is supported|support|support
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|Procedure|Syntax compatibility is supported, and the OUT parameter is supported|support|support
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|Anonymous block|Syntax compatibility is supported, and the OUT parameter is supported|not support|support
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|Nested subroutines|Nested stored procedures, functions, and so on are supported|not support|support
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|Merge|The Merge function of PG and the Merge function compatible with Oralce syntax are supported|not support|support
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|q`|Compatible escapes are supported|support|support
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|Keyword processing|Supports the processing of keywords in the database|not support|support
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.4+|Object case conversion|All uppercase plus double quotation marks are converted to lowercase|not support|support
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|All lowercase plus double quotation marks are converted to uppercase|not support|support
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|The mixed case plus double quotation marks remain the same|not support|support
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|Without double quotation marks (default), all are lowercase|not support|support
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|Search Path|In compatibility mode, the default search is sys mode, and then the pg_catalog mode|not support|support
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|Empty strings|Oracle-compatible conversion of empty strings to NULL is supported|not support|support
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|Lexical parser separation|Part of the 3.0 framework|not support|support
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|package||support|not support
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|Globally unique indexes||support|support
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|GUC Switch to oracle or pg||support|support
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|Hierarchical queries||support|not support
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|NANVL ||support|not support
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|GREATEST||support|not support
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|LEAST||support|not support
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|ADD_DAYS_TO_TIMESTAMP||support|not support
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|DAYS_BETWEEN ||support|not support
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|DAYS_BETWEEN_TMTZ ||support|not support
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|DBTIMEZONE||support|not support
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|TO_MULTI_BYTE||support|not support
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|TO_SINGLE_BYTE||support|not support
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|INTERVAL_TO_SECONDS||support|not support
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|HEX_TO_DECIMAL||support|not support
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|TO_BINARY_DOUBLE||support|not support
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|TO_BINARY_FLOAT||support|not support
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|BIN_TO_NUM||support|not support
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|====
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== Known Issues
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The following individuals have contributed to this release as patch authors, committers, reviewers, testers, or issue reporters.
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- IvorySQL Pro development & testing team
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- Yang Tan
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- Jie Wang
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- Shuainan Mu
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- Jiao Ren
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- Zheng Liu
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- Zhekai Xiao
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- Huajian JIN
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- LIly Wang
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- Jinzhou song
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- Huajian Jin
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- Lily Wang
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- Jinzhou Song
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- Leo X.M. Zeng
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- Shaoan Yan
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- M.Imran Zaheer
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- Yunhe Xu
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- Hao Wang
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- Miss Dong
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- Weibo Han

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