varchar

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how to get the size of varchar in the oracle AssociativeArray type

I have a stored procedure in which I defined a type : type AssocArrayVarchar2_t is table if varchar(10) index by binary_integer;[详细]

2023-03-10 02:39 分类：问答
SQL: Ideal engine type (MyISAM vs InnoDB) and data type for unique text column

Hi I have a php website using mysql and I have a table with a column called \'Name\'. I intend for it to have the following features:[详细]

2023-03-06 04:25 分类：问答
SQL row is only varchar(10) but has 30+ characters in it

table on external database (when I click mo开发者_开发问答dify) states that row A is a varchar(10) but when I look at the data there is obviously many more characters in it. How is this possible?[详细]

2023-03-05 04:37 分类：问答
What is the advantage of using varbinary over varchar here?

A while ago I asked a question about hierarchy/version number sorting in SQL Server.开发者_运维技巧[详细]

2023-03-05 04:11 分类：问答
MySQL different treatment between VarChar(255) and VarChar(65536)

Does anyone know the difference between using VarChar(255) and VarChar(65536) ? Here\'s what I know so far :[详细]

2023-03-03 07:05 分类：问答
What is the maximum range of varchar in MySQL?

What is the maximum range of varchar in MySQL? I am using the latest version of MySQL and in many sites it is being told that the size is 255. But when i am trying to give a higher size like 500 or 1[详细]

2023-03-03 01:15 分类：问答
SQL Server Nullable Column

I have a SQL Server table with a few columns of type varchar which are nullable. When an aspx page posts data if thetextbox is empty, the database table column is updated to an empty string.[详细]

2023-03-02 23:05 分类：问答
Issue After Converting Table Column From "Text" to Varchar(max)

I had a table called Person with column PersonDescription which was of type \"text\". I had issues with updating this column so i ran the script[详细]

2023-03-01 13:21 分类：问答
Sort a query by a varchar field(which have numerical values) on numerical basis with Jooq

How can i sort a varchar field , i have taken ID as varchar and i want to sort it numerically. We can do this in SQL with using[详细]

2023-02-28 17:23 分类：问答
Is there no point to make a 1 length long var char in database?

I would like to store a user status in the database, so, I will use a char to store the status, for example, \"active\", \"inactive\", \"close\". I will use \"a\", \"i\", \"c\" to represent these stat[详细]

2023-02-27 05:53 分类：问答