Azure Databricks: AnalysisException: Database 'bf' not found

[Dicer]

I wanted to save my delta tables in my Databricks database.

When I saveAsTable, there is an error message Azure Databricks: AnalysisException: Database 'bf' not found

Ye, There is no database named "bf" in my database.

Here is my full code:

import os
import numpy as np
import pandas as pd
 
from pyspark import SparkFiles
from pyspark import SparkContext
from pyspark.sql import SparkSession
from pyspark.sql import functions
from pyspark.sql.functions import * #import avg, col, udf
from pyspark.sql import SQLContext
from pyspark.sql import DataFrame
from pyspark.sql.types import *
import json
 
#LIST, RENAME, AND SAVE ALL FILES AS DELTA LAKE AUTOMATICALLY
#Data written to mount point paths ( /mnt ) is stored outside of the DBFS root
path_30min = '/dbfs/mnt/finance/FirstRate30min'
filename_lists_30min = os.listdir(path_30min)
 
df_30min_ = {}
delta_30min ={}
 
for filename_30min in os.listdir(path_30min):
    
    #split file name
    rawname_30min = filename_30min.split('_')[0]
    name_30min = rawname_30min.split('-')[0]
    
    #create clolumn header names
    temp_30min = StructType([StructField(name_30min+"_dateTime", StringType(), True),StructField(name_30min+"_adjOpen", FloatType(), True),StructField(name_30min+"_adjHigh", FloatType(), True),StructField(name_30min+"_adjLow", FloatType(), True),StructField(name_30min+"_adjClose", FloatType(), True),StructField(name_30min+"_adjVolume", IntegerType(), True)])
    
    #list and create csv dataframes
    temp_df_30min = spark.read.format("csv").option("header", "false").schema(temp_30min).load("/mnt/finance/FirstRate30min/"+filename_30min).withColumn("Ticker", lit(name_30min))
    
    #name each dataframes
    df_30min_[name_30min] = temp_df_30min
    
    #name each table
    table_name_30min = name_30min+'_30min_delta'
    
    #create delta lake for each dataframes
    df_30min_[name_30min].write.format("delta").mode("overwrite").option("overwriteSchema","True").saveAsTable(table_name_30min)

I tried to debug, but only this step failed.

df_30min_[name_30min].write.format("delta").mode("overwrite").option("overwriteSchema","True").saveAsTable(table_name_30min)

.

[Hubert-Dudek · Accepted solution]

Please print(table_name_30min). It seems you have a dot in the variable, which is why it is recognized as the "bf" database.

[Dicer]

I print(table_name_30min), but the table names are correct.

[Dicer]

Does changing the database cause the issue?

Before I run the full code, I also changed my default database to another database.

%sql
 
USE DATABASE deltabase

[Dicer]

Some data can be saved as delta tables while some cannot.

[Dicer]

I understand the issue now😂

BF.B_30min_delta