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How to get PostgreSQL range types via jdbc
(1 answer)
Persists Java object in postgresql in a range type
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Insert "daterange" field value into PostgreSQL table through JDBC
(1 answer)
Closed 4 years ago.
I want to use tsrange as type for effective_range column and for valid_range column (transaction start and end timestamp) and use it in temporal queries.
Is there any type to map tsrange to a entity's column/columns?
Related
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PostgreSQL "Column does not exist" but it actually does
(6 answers)
Postgres: column does not exist [duplicate]
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SQL query column does not exist error
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Postgresql Column Not Found, But Shows in Describe
(1 answer)
Closed 1 year ago.
I have a table with column name as "name" and I want to change it to "Student_Name" for this i used the query
ALTER TABLE "Science_Class" RENAME column name TO Student_Name;
But I am getting the error message as the name column doesn't exit.
This question already has an answer here:
update vachar column to date in postgreSQL
(1 answer)
Closed 2 years ago.
I have a PostgreSQL table that contains a column of data type 'text', that column contains only dates.
I'm trying to convert it to date type, But it doesn't work.
publication_date
-----------
"9/16/2006"
"9/1/2004"
"11/1/2003"
"5/1/2004"
"9/13/2004"
"4/26/2005"
"9/12/2005"
"11/1/2005"
"4/30/2002"
"8/3/2004"
ALTER TABLE books
ALTER COLUMN publication_date SET DATA TYPE date;
outputs:
ERROR: column "publication_date" cannot be cast automatically to type date
HINT: You might need to specify "USING publication_date::date".
SQL state: 42804
The error message tells you what to do:
ALTER TABLE books
ALTER COLUMN publication_date SET DATA TYPE date
USING to_date(publication_date, 'mm/dd/yyyy');
This question already has answers here:
How to search a specific value in all tables (PostgreSQL)?
(9 answers)
Postgres find all rows in database tables matching criteria on a given column
(1 answer)
Search across multiple tables and also display table name in resulting rows
(3 answers)
Closed 3 years ago.
I only have a uuid, but I don't know which table is the the row of the data located, how can I find the data by the UUID?
My direction maybe create a multiple query, since we could retrieve all tables, then we can loops all table and search by select * from $tableName where id = $uuid, but it might not be efficient enough, is there any shortcut or tool for this purpose?
This question already has answers here:
Cannot simply use PostgreSQL table name ("relation does not exist")
(18 answers)
Closed 5 years ago.
This is my query
INSERT INTO EForms_M_FormTypeMaster (FormTypeId,FormTypeCode,FormTypeName)
VALUES ('12','FM','Form');
Getting this error
Error Message relation "eforms_m_modulemaster" does not exist
Please help to solve the issue
Where is the table? If it is in public then you must aware about case insensitive. That means if your table realname is EForms_M_FormTypeMaster you must put it between "
INSERT INTO "EForms_M_FormTypeMaster" ("FormTypeId","FormTypeCode","FormTypeName")
VALUES ('12','FM','Form');
This question already has answers here:
Upgrade PostgreSQL JSON column to JSONB?
(2 answers)
Closed 6 years ago.
In postgresql 9.4 the new JSONB was incorporated.
On a live DB in postgresql 9.3 I have a JSON column.
I want to migrate it to JSONB.
Assuming I migrated the DB first to 9.4 (using pg_upgrade). What do I do next?
ALTER TABLE table_with_json
ALTER COLUMN my_json
SET DATA TYPE jsonb
USING my_json::jsonb;
In the context of Rails, here is an ActiveRecord migration alternative:
def change
reversible do |dir|
dir.up { change_column :models, :attribute, 'jsonb USING CAST(attribute AS jsonb)' }
dir.down { change_column :models, :attribute, 'json USING CAST(attribute AS json)' }
end
end
I don't know how this compares to the accepted answer performance-wise, but I tested this on a table with 120 000 records, each record having four json columns and it took me about a minute to migrate that table. Of course, I guess it depends on how complex the json structure is.
Also, notice that if your existing records have a default value of {}, you have to add to the above statements default: {}, because otherwise you'll have jsonb columns, but the default value will remain as '{}'::json.