But you’ll start to run into a problem if you’ve actually created the table with case-sensitive names, which happens when you use quotes around the names. For example, consider these SQL CREATE statements: CREATE TABLE person (fullname VARCHAR(100), address VARCHAR(100)) CREATE TABLE Pers...
达梦针对大小写敏感的配置设置了参数CASE_SENSITIVE,在dminit命令初始化数据库时定义,可选值:Y/N,1/0; Oracle中在数据库名、表名、字段名时默认是使用大写,若需创建小写的字段名等,需加双引号;而在针对字段内容的字符串时是区分大小写的; Mysql在Linux平台下默认是区分大小写的,并且提供了参数lower_case_table_...
CREATE TABLE aliases (t tsquery PRIMARY KEY, s tsquery); INSERT INTO aliases VALUES('a', 'c'); SELECT ts_rewrite('a & b'::tsquery, 'SELECT t,s FROM aliases'); ts_rewrite --- 'b' & 'c' 1. 2. 3. 4. 5. 6. 7. 注意当多个重写规则被以这种方式应用时,应用的顺序很重要;因此...
CaseSensitivity CI 指定不区分大小写,CS 指定区分大小写。 AccentSensitivity AI 指定不区分重音,AS 指定区分重音。 KanatypeSensitive Omitted 指定不区分大小写,KS 指定区分假名类型。 WidthSensitivity Omitted 指定不区分大小写,WS 指定区分大小写。 BIN 指定使用二进制排序次序。 如果你只是目前查询区分,那么还是不...
CREATETABLEsensitive_data ( id SERIALPRIMARYKEY, dataVARCHAR(255) );INSERTINTOsensitive_data (data)VALUES('password123'), ('secretcode');-- 加密(反转字符串)SELECTid, reverse_string(data)ASEncryptedDataFROMsensitive_data; 结果: +---+---+| id | EncryptedData| +---+---+| 1...
casesensitive 否 列名和表名是否区分大小写,取值说明: 0(默认):不区分大小写。 1:区分大小写。 在Flink上执行INSERT INTO命令将Kafka数据同步至AnalyticDB PostgreSQL版。 INSERT INTO ADBPGTargetTable SELECT * FROM KafkaSourceTable; 您可以在Flink控制台查看执行情况,示例如下。 上一篇:Db2 for LUW同步至云原生...
Schema and table are case-sensitive. Table "public"."Foo bar" should be specified as public.Foo\ bar. add-tables: include only rows from the specified tables. Default is all tables from all schemas. It has the same rules from filter-tables. format-version: defines which format to use. ...
Schema and table names are case-sensitive. Enclose them in "" (double quotes) in the query. Example: JSON Copy "activities":[ { "name": "CopyFromPostgreSQL", "type": "Copy", "inputs": [ { "referenceName": "<PostgreSQL input dataset name>", "type": "DatasetReference" } ], "...
If you selectTable: Table: Specify the name of the table to read data. Select the table from the drop-down list or selectEditto manually enter it. If you selectQuery: Query: Specify the custom SQL query to read data. Note Schema and table names are case-sensitive. Enclose them in ""...
I’ve been usingPostgreSQLinstead ofMySQLfor a while now. When I first migrated, one problem I had was related to how string columns work.In PostgreSQL they’recase-sensitive. To demonstrate how PostgreSQL works let’s create a table with a unique index. ...