querying tag

9 questions


1 answers
120 views
0
I'd like to find the value from the array type column to array.

There is a table as below.Books Table-----------------------COLUMN NAME | TYPEid | integername | character varyingsubjects | character varying [] subjects array types when is stored as the {educat...


2 answers
116 views
0
Database query statement select question.

I want to search using SELECT statement in php file, but if the value of the search is title and the title part of the database is 'Jeju Rape Flower Festival' and only 'Jeju Island' can I get a query ...

2 years ago

2 answers
97 views
0
Query to get daily visitor count as login history (MySQL)

There is a table that takes the user ID (INT) and login time (Timestamp) as columns, and INSERTs the record once every time the user logs in.I'd like to get the number of duplicate daily visitors from...

2 years ago

2 answers
117 views
0
How MySQL conditions the select result value of another table and queries

Here's what I want to do.Example A)select col_name from table_a where col_name like '%val%';Result A)val1val2val3Example B)select col, count(col) from table_bwhere color '%result A value 1%' OR color ...

2 years ago

1 answers
124 views
0
How can I write a three-table join SQL statement?

The table structure is shown below. What I want to show you is to show the materials that belong to the product in the product list. Product 1 | (Material 1, Material 2) Product 2 | (Material 1, Mater...

2 years ago

1 answers
98 views
0
Double query statement

ex) select distinct(user_level) from UserInfo; ex) select min(play_time) from UserInfo where user_lever in(select distinct(user_level) from UserInfo)I thought this would list the minimum play time for...

2 years ago

1 answers
87 views
0
To ensure that the Oracle property value always contains a constant string...

I want to set the same string to always be entered in one property in the table.What should I do>?


1 answers
122 views
0
How do I create a query that I search for when the input value is an array in Rails Active record?

As the title suggests, when importing a value from DB, the input value is an array. Unfortunately, it would be nice if the DB column corresponds 1:1 with each value in the array, but it is not.In DB, ...


1 answers
119 views
0
I want to group based on one column of mysql and join with another table after getting the number.

I made a GROUP based on ID in Table A.SELECT TOP 200 A.ID,COUNT(A.ID) AS CNT FROM A A LEFT join ANAME as Aname on A.ID = Aname.ID LEFT join BNAME as Bname on Aname.SEQ = Bname.SEQ where A.POI_ID > ...

2 years ago

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