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Invert “if” statement to reduce nesting
...cked this code from the refactoring catalog. This specific refactoring is called: Replace Nested Conditional with Guard Clauses.
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Are nested transactions allowed in MySQL?
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InnoDB supports SAVEPOINTS.
You can do the following:
CREATE TABLE t_test (id INT NOT NULL PRIMARY KEY) ENGINE=InnoDB;
START TRANSACTION;
INSERT
INTO t_test
VALUES (1);
SELECT *
FROM t_test;
id
---
1
SAVEPOINT tran2;
INSERT
INTO t_test
VALUES (2);
SELECT *
FROM ...
How to use orderby with 2 fields in linq? [duplicate]
Say I have these values in a database table
5 Answers
5
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Emacs Ruby autocomplete almost working
...t files except I've found it doesn't allow me to select an answer from the table when I'm editing some code in my ruby on rails project.
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Is there a way to programmatically tell if particular block of memory was not freed by FastMM?
...tore results in a database? For example I would like to have in a database table a names of routines which allocated given blocks.
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Correct use of transactions in SQL Server
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Easy approach:
CREATE TABLE T
(
C [nvarchar](100) NOT NULL UNIQUE,
);
SET XACT_ABORT ON -- Turns on rollback if T-SQL statement raises a run-time error.
SELECT * FROM T; -- Check before.
BEGIN TRAN
INSERT INTO T VALUES ('A');
INSERT I...
Get total number of items on Json object? [duplicate]
...Object.keys(jsonArray).length
References:
Object.keys.
Kangax's compat table.
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What do {curly braces} around javascript variable name mean [duplicate]
...[b, a];
Browser support can be tracked using kangax' ES6 compatibility table.
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mysql实现split分割字符串（length, SUBSTRING_INDEX, substring） - 数据...
...tid, 2+length(SUBSTRING_INDEX(contentid, '-', 1))) second, contentid FROM `table_xxx`
mysql split 分割字符串
关于ORA-00903. 表名无效的错误 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...时是用双引号中的小写表名创建的，就像下面这样：createtable"mytable"("a"int,"b"varchar2(2));使用这个表（或字段） 可能创建表（或字段）时是用双引号中的小写表名创建的，就像下面这样：
create table "mytable" (a int, "b" varchar2(2));
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