How to Query map in Groovy with sql? - sql

Question

I am trying to query a map in Groovy using mysql using:
def dat = [["id": person[-1], "date" : appt]]
dat.each{ db ->
sql.eachRow(
"select * from ${Sql.expand(db)};",
{ println "\t$db ${it.mid}"} );
but I get an error:
java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '=10886, date=19-01-2017}' at line 1
what seems to be the problem here?
************************************************* EDIT *****************************************************
I'm now trying to insert the map into a mysql, which I am then querying using:
sql.execute '''DROP TABLE IF EXISTS EDSS'''
sql.execute '''
CREATE TABLE EDSS (
id INT,
Clinic VARCHAR(15),
EDSS VARCHAR(64),
item VARCHAR(64)
);
'''
sql.withBatch("INSERT INTO EDSS (id, Clinic, EDSS, item) VALUES (?,?,?,?)"){ bt ->
bt.addBatch(df)
}
def res = sql.eachRow("select * from EDSS"){ row ->
println "$row"
}
the sql.eachRow part works fine i.e. I can select, but in the the insert statement I only seem to be inserting the first row within the map i.e.
println(df):
[1025386, 20-10-2017, null, ahddkw9d9c]
[10213446, 19-04-2017, 2.5, null]
[102382, 19-04-2017, null, null]
[1628466, 19-04-2017, null, 292jdmd02d]
[1111345, 18-09-2015, unchanged, null]
but:
println(res):
[1025386, 20-10-2017, null, ahddkw9d9c]
*********************************** Another EDIT *****************************************************
So trying to loop round all the values in the map, df, with:
sql.withBatch { stmt ->
df.each { k, v, x, y ->
stmt.addBatch("INSERT INTO EDSS (study_id, Clinic, EDSS, NHS) VALUES ('$k', '$v', '$x', '$y')")
}
}
results in:
groovy.lang.MissingMethodException: No signature of method: sql$_run_closure1$_closure2$_closure4.doCall() is applicable for argument types: (java.lang.String) values: [1025386]
I'm used to R where everything is nice and vectorized. If anyone can help at all that would be excellent!

Answer 1

What I observed here :
You are trying to insert the java.util.ArrayList [[val11, val12,...],[val21, val22,...]]. you almost close at what you are trying to do.
Note : in comment dagget already mentioned this answer. I am just trying to show in code.
Answer :
def df = [
[1025386, '20-10-2017', null, 'ahddkw9d9c'],
[10213446, '19-04-2017', 2.5, null],
[102382, '19-04-2017', null, null],
[1628466,'19-04-2017', null, '292jdmd02d'],
[1111345, '18-09-2015', 'unchanged', null]
]
sql.withBatch("INSERT INTO EDSS (id, Clinic, EDSS, item) VALUES (?,?,?,?)"){ bt ->
df.each { row ->
bt.addBatch (row) // <==== Answer Line
}
}
sql.eachRow("select * from EDSS"){ row ->
println "$row"
}
Description :
The variable bt is actually BatchingPreparedStatementWrapper object. See the groovy document
So the addBatch() method can accept these types List<Object> or Object[].
Output :
[id:1025386, Clinic:20-10-2017, EDSS:[null], item:ahddkw9d9c]
[id:10213446, Clinic:19-04-2017, EDSS:2.5, item:[null]]
[id:102382, Clinic:19-04-2017, EDSS:[null], item:[null]]
[id:1628466, Clinic:19-04-2017, EDSS:[null], item:292jdmd02d]
[id:1111345, Clinic:18-09-2015, EDSS:unchanged, item:[null]]