PLSQL中游标常常用于联机交易，调用存储过程所返回的结果集也常用游标去存储的。游标的定义语句比较简单，如 cursor my_cursor is select 1 from dual。openGauss中不兼容游标定义的IS关键字，需要改写为FOR。postgres=# CURSOR prd_cursor IS select name from product; ERROR: syntax error at or near "IS"LI...
"skipColumnName": { "SCHEMA1.TAB_01.COL1": 1, "SCHEMA1.TAB_01.COL2": 2 }, "templateSeqName": "{{.TabName}}_{{.ColName}}_SEQ", "charAppendEmptyString": false, "tableOptions": {}, "indexOptions": {} } }, "object": { "tables": [], "schemas": [ "XXXXX" ], "exclu...
The syntax to create one is:Copy code snippet Copied to Clipboard Error: Could not Copy Copied to Clipboard Error: Could not Copy create blockchain table blockchain_tab ( audit_id integer not null primary key, audit_timestamp timestamp not null, audit_data clob not null ) no drop u...
6). 格式化NUMBER类型列的显示: SQL> COLUMN SAL FORMAT99,990SQL>/EmployeeDepartmentNameSalaryCommission−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−30ALLEN99,990SQL>/EmployeeDepartmentNameSalaryCommission...
COL[UMN] [{ column|expr} [ option ...]] Option选项可以是如下的子句: ALI[AS] alias CLE[AR] FOLD_A[FTER] FOLD_B[EFORE] FOR[MAT] format HEA[DING] text JUS[TIFY] {L[EFT]|C[ENTER]|C[ENTRE]|R[IGHT]} LIKE { expr|alias} ...
sql> create table table_name (column datatype,column datatype]...) sql> tablespace tablespace_name [pctfree integer] [pctused integer] sql> [initrans integer] [maxtrans integer] sql> storage(initial 200k next 200k pctincrease 0 maxextents 50) sql...
SQL语言是非过程化编程语言,主要分为数据查询语言(SELECT)、数据操作语言(INSERT、UPDATE和DELETE)、事务控制语言(COMMIT、SAVEPOINT、ROLLBACK)、权限控制语言(GRANT、REVOKE)、数据定义语言(CREATE、ALTER和DROP)、指针控制语言(DECLARE CURSOR)。 SQL语法的标准是由ANSI和国际标准化组织(ISO)作为ISO/IEC 9075标准维护,...
添加Oracle 表时,Attunity Oracle Microsoft CDC 设计器失败并显示“Incorrect syntax near the keyword 'KEY'”(关键字“KEY”附近的语法不正确)错误。 SQL Server 2016 4.0.107 版包含以下修复: Bug 修复 - 添加 Oracle 表时,Oracle CDC 设计器失败并显示“Incorrect syntax near the k...
Improved table/index compression 改进的表/索引压缩- Segment compression now works for all DML, not just direct-path loads, so you can create tables compressed and use them for regular OLTP work. Also supports column add/drop.Mark Rittman ...
数据库应用最核心的部分就是SQL语言。SQL语言是非过程化编程语言,主要分为数据查询语言(SELECT)、数据操作语言(INSERT、UPDATE和DELETE)、事务控制语言(COMMIT、SAVEPOINT、ROLLBACK)、权限控制语言(GRANT、REVOKE)、数据定义语言(CREATE、ALTER和DROP)、指针控制语言(DECLARE CURSOR)。