I'm new to MySQL. I'm trying to add a string value to a json value in MySQL. The column name is IPConfig. This is the current json string in the column.
{"theme":"black", "button1link":"http//sample.com", "name":"pp"}
I have to append a "www" to button1link value.
Thanks in advance!
Here you can try
UPDATE table SET DATA= JSON_SET(DATA, "$.button1link", INSERT("http//sample.com", 7, 0,'www')) WHERE 1 = 1;
But for this to work, you will need MySQL 5.7+
You can have insert function docs here.
Related
I want to convert a string object from json file into integer using pyspark.
df1.select(df1["`result.price`"]).dtypes
Out[15]: [('result.price', 'string')]
df1=df1.withColumn(df1.select(df1["`result.price`"]),F.col(df1.select(df1["`result.price`"])).cast(T.IntegerType()))
'DataFrame' object has no attribute '_get_object_id'
If you want to modify inline:
Since you are trying to modify the data type of nested struct field, I think you need to apply the new StructType.
Take a look at this https://stackoverflow.com/a/63270808/2956135
If you are okay with extracting to a different column:
df1 = df1.withColumn('price', F.col('result.price').cast(T.IntegerType()))
TL;DR
Why your line gives an error?
There is a few mistakes in this syntax.
df1 = df1.withColumn(df1.select(df1["`result.price`"]),F.col(df1.select(df1["`result.price`"])).cast(T.IntegerType()))
First, 1st argument of withColumn has to be string of a column name that you want to save as.
Second, F.col's argument has to be string of a column name or reference to the column.
So, this syntax should not throw an error, however, the casted value is saved to the new column.
df1 = df1.withColumn('result.price', F.col('result.price').cast(T.IntegerType()))
how to change next data in database:
jsonData = [{"given_date": "2 1.05. 2002 year"}]
to
jsonData = [{"given_date": "21.05.2002"}]
Postgresql update with regex:
UPDATE table
SET given_date = regexp_replace(given_date, '(\s|[a-zA-Z])', '','');
regexp_replace takes the value in given_date and be replaced by third parameter (empty string), according to the second regular parameter (match the spaces and alphabets). The fourth parameter is option like 'g(global)', 'i(ignore case)';
Postgresql regexp_replace reference
Laravel update with regex:
\DB::table('tablename')
->where(...)
->update([
'given_date' => \DB::raw("regexp_replace(given_date, '(\s|[a-zA-Z])', '','')")
]);
I want to use where condition on a json object in a table, in postgreSql. how i need to do this for example: i have a table 'test' it has three columns name(varchar),url(varchar),more(json). i need to retrive date where css21Colors = Purple.
more is a json type and below is the values of more field.
Please let me know what should be syntax of querying for the same?
more = {"colorTree":{"Purple":[{"Spanish Violet":"#522173"}],
"Brown":[{"Dark Puce":"#4e3347"}],"White":[{"White":"#ffffff"}],
"Black":[{"Eerie Black":"#1d0d27"}],"Gray":[{"Rose Quartz":"#a091a4"}]},
"sizeoutscount":0,"css21Colors":{"Purple":69,"Brown":5,"White":4,"Black":17,"Gray":3},
"sizeins": [],"sizeinscount":0,"sizeouts":[],"allsizes":["8","10","16"],
"css3Colors": {"Rose Quartz":3,"White":4,"Dark Puce":5,"Eerie Black":17,"Spanish
Violet":69},"hexColors":{"#522173":69,"#4e3347":5,"#ffffff":4,"#1d0d27":17,"#a091a4":3}}
SELECT more->'css21Colors'->'Purple' FROM test;
Additionally you can query only the rows containing that key.
SELECT
more->'css21Colors'->'Purple'
FROM
test
WHERE
(more->'css21Colors')::jsonb ? 'Purple';
Mind switching to the jsonb data type.
My table has a column with a JSON string that has nested objects (so a simple REPLACE function cannot solve this problem) . For example like this: {'name':'bob', 'blob': {'foo':'bar'}, 'age': 12}. What is the easiest query to append a value to the end of the JSON string? So for the example, I want the end result to look like this: {'name':'bob', 'blob': {'foo':'bar'}, 'age': 12, 'gender': 'male'} The solution should be generic enough to work for any JSON values.
What about this
UPDATE table SET table_field1 = CONCAT(table_field1,' This will be added.');
EDIT:
I personally would have done the manipulation with a language like PHP before inserting it. Much easier. Anyway, Ok is this what you want? This should work providing your json format that is being added is in the format {'key':'value'}
UPDATE table
SET col = CONCAT_WS(",", SUBSTRING(col, 1, CHAR_LENGTH(col) - 1),SUBSTRING('newjson', 2));
I think you can use REPLACE function to achieve this
UPDATE table
SET column = REPLACE(column, '{\'name\':\'bob\', \'blob\': {\'foo\':\'bar\'}, \'age\': 12}', '{\'name\':\'bob\', \'blob\': {\'foo\':\'bar\'}, \'age\': 12, \'gender\': \'male\'}')
Take care to properly escape all quotes inside json
Upon you request of nested json, i think you can just remove last character of the string with SUBSTRING function and then append whatever you need with CONCAT
UPDATE table
SET column = CONCAT(SUBSTRING(column, 0, -1), 'newjsontoappend')
modify Jack's answer. Works perfectly even column value is empty on first update.
update table
set column_name = case when column_name is null or column_name =''
then "{'foo':'bar'}"
else CONCAT_WS(",", SUBSTRING(column_name, 1, CHAR_LENGTH(column_name) - 1),SUBSTRING("{'foo':'bar'}", 2))
end
I have a database that has stored values in a complicated, serialized array where one component is a string and another is the length of the characters of the string, in this format:
s:8:"test.com"
Where "s" holds the character length of the string in the quotations.
I would like to change the string from "test.com" to "testt.com", and I'm using the following statement in SQL:
UPDATE table SET row=(REPLACE (row, 'test.com','testt.com'))
However, this breaks the script in question, because it doesn't update the character length in the "s" preceding the string where "test.com" is stored.
I was wondering if there is a query I can use that would replace the string, and then also increment the value of this "s" preceding to where the replacement occurs, something like this:
UPDATE table SET row=(REPLACE (row, 's:' number 'test.com','s:' number+1 'testt.com'))
Does anyone know if this kind of query is even possible?
UPDATE table set row = concat('s:',length('testt.com'),':"testt.com"');
If you need to change exact string, then use exact query -
UPDATE table SET row = 's:9:"testt.com"' WHERE row = 's:8:"test.com"';
The string is a "serialized string".
If there are multiple strings to be replaced, it might be easier to create a script to handle this.
In PHP, it goes something like this:
$searchfor = serialize('test.com');
$replaceby = serialize('testt.com');
// strip last semicolon from serialized string
$searchfor = trim($searchfor,';');
$replaceby = trim($replaceby,';');
$query = "UPDATE table SET field = '$replaceby' WHERE field = '$searchfor';";
This way, you can create an exact query string with what you need.
Do fill in the proper code for db connection if necessary.