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From: t-ishii@sra.co.jp Attached are patches to enhance the multi-byte support. (patches are against 7/18 snapshot) * determine encoding at initdb/createdb rather than compile time Now initdb/createdb has an option to specify the encoding. Also, I modified the syntax of CREATE DATABASE to accept encoding option. See README.mb for more details. For this purpose I have added new column "encoding" to pg_database. Also pg_attribute and pg_class are changed to catch up the modification to pg_database. Actually I haved added pg_database_mb.h, pg_attribute_mb.h and pg_class_mb.h. These are used only when MB is enabled. The reason having separate files is I couldn't find a way to use ifdef or whatever in those files. I have to admit it looks ugly. No way. * support for PGCLIENTENCODING when issuing COPY command commands/copy.c modified. * support for SQL92 syntax "SET NAMES" See gram.y. * support for LATIN2-5 * add UNICODE regression test case * new test suite for MB New directory test/mb added. * clean up source files Basic idea is to have MB's own subdirectory for easier maintenance. These are include/mb and backend/utils/mb.
20 lines
936 B
SQL
20 lines
936 B
SQL
drop table 计算机术语;
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create table 计算机术语(术语 text, 分类号 varchar, 备注1A char(16));
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create index 计算机术语index1 on 计算机术语 using btree(术语);
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create index 计算机术语index2 on 计算机术语 using btree(分类号);
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insert into 计算机术语 values('电脑显示屏','机A01上');
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insert into 计算机术语 values('电脑图形','分B01中');
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insert into 计算机术语 values('电脑程序员','人Z01下');
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vacuum 计算机术语;
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select * from 计算机术语;
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select * from 计算机术语 where 分类号 = '人Z01下';
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select * from 计算机术语 where 分类号 ~* '人z01下';
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select * from 计算机术语 where 分类号 like '_Z01_';
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select * from 计算机术语 where 分类号 like '_Z%';
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select * from 计算机术语 where 术语 ~ '电脑[显图]';
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select * from 计算机术语 where 术语 ~* '电脑[显图]';
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select *,character_length(术语) from 计算机术语;
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select *,octet_length(术语) from 计算机术语;
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select *,position('显' in 术语) from 计算机术语;
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select *,substring(术语 from 3 for 4) from 计算机术语;
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