diff --git a/data/csv/prices.csv b/data/csv/prices.csv
new file mode 100644
index 0000000..b294ecf
--- /dev/null
+++ b/data/csv/prices.csv
@@ -0,0 +1,101 @@
+Index,product,price,prices_row_num
+1,Holden,334.8,1
+2,Mercedes-Benz,623.22,2
+3,Aston Martin,363.48,3
+4,GMC,615.67,4
+5,Lincoln,521.13,5
+6,Mitsubishi,143.05,6
+7,Infiniti,861.82,7
+8,Ford,330.57,8
+9,GMC,136.87,9
+10,Toyota,106.29,10
+11,Pontiac,686.95,11
+12,Ford,197.48,12
+13,Honda,774.42,13
+14,Dodge,854.26,14
+15,Bentley,628.82,15
+16,Chevrolet,756.82,16
+17,Volkswagen,438.51,17
+18,Mazda,156.15,18
+19,Hyundai,322.43,19
+20,Oldsmobile,979.95,20
+21,Geo,359.59,21
+22,Ford,960.75,22
+23,Subaru,106.75,23
+24,Pontiac,13.4,24
+25,Mercedes-Benz,858.46,25
+26,Subaru,55.72,26
+27,BMW,316.69,27
+28,Chevrolet,290.32,28
+29,Mercury,296.8,29
+30,Dodge,410.78,30
+31,Oldsmobile,18.07,31
+32,Subaru,442.22,32
+33,Dodge,93.29,33
+34,Honda,282.9,34
+35,Chevrolet,750.87,35
+36,Lexus,249.82,36
+37,Ford,732.33,37
+38,Toyota,680.78,38
+39,Nissan,657.01,39
+40,Mazda,200.76,40
+41,Nissan,251.44,41
+42,Buick,714.44,42
+43,Ford,436.2,43
+44,Volvo,865.53,44
+45,Saab,471.52,45
+46,Mercedes-Benz,51.13,46
+47,Chrysler,943.52,47
+48,Lamborghini,181.6,48
+49,Hyundai,634.89,49
+50,Ford,757.58,50
+51,Porsche,294.64,51
+52,Ford,261.34,52
+53,Chrysler,822.01,53
+54,Audi,430.68,54
+55,Mitsubishi,69.12,55
+56,Mazda,723.16,56
+57,Mazda,711.46,57
+58,Land Rover,435.15,58
+59,Buick,189.58,59
+60,GMC,651.92,60
+61,Mazda,491.37,61
+62,BMW,346.18,62
+63,Ford,456.25,63
+64,Ford,10.65,64
+65,Mazda,985.39,65
+66,Mercedes-Benz,955.79,66
+67,Honda,550.95,67
+68,Mitsubishi,127.6,68
+69,Mercedes-Benz,840.65,69
+70,Infiniti,647.45,70
+71,Bentley,827.26,71
+72,Lincoln,822.22,72
+73,Plymouth,970.55,73
+74,Ford,595.05,74
+75,Maybach,808.46,75
+76,Chevrolet,341.48,76
+77,Jaguar,759.03,77
+78,Land Rover,625.01,78
+79,Lincoln,289.13,79
+80,Suzuki,285.24,80
+81,GMC,253.4,81
+82,Oldsmobile,174.76,82
+83,Lincoln,434.17,83
+84,Dodge,887.38,84
+85,Mercedes-Benz,308.65,85
+86,GMC,182.71,86
+87,Ford,619.62,87
+88,Lexus,228.63,88
+89,Hyundai,901.06,89
+90,Chevrolet,615.65,90
+91,GMC,460.19,91
+92,Mercedes-Benz,729.28,92
+93,Dodge,414.69,93
+94,Maserati,300.83,94
+95,Suzuki,503.64,95
+96,Audi,275.05,96
+97,Ford,303.25,97
+98,Lotus,101.01,98
+99,Lincoln,721.05,99
+100,Kia,833.31,100
\ No newline at end of file
diff --git a/data/csv/r_cte_balance.csv b/data/csv/r_cte_balance.csv
new file mode 100644
index 0000000..a77c742
--- /dev/null
+++ b/data/csv/r_cte_balance.csv
@@ -0,0 +1,5 @@
+time,name,account_balance
+1,John,100
+1,Tim,200
+2,John,300
+2,Tim,400
\ No newline at end of file
diff --git a/data/csv/r_cte_growth.csv b/data/csv/r_cte_growth.csv
new file mode 100644
index 0000000..912208b
--- /dev/null
+++ b/data/csv/r_cte_growth.csv
@@ -0,0 +1,4 @@
+name,account_growth
+John,3
+Tim,20
+Eliza,150
\ No newline at end of file
diff --git a/data/csv/r_cte_time.csv b/data/csv/r_cte_time.csv
new file mode 100644
index 0000000..21026bd
--- /dev/null
+++ b/data/csv/r_cte_time.csv
@@ -0,0 +1,5 @@
+time,other
+1,foo
+2,bar
+4,baz
+5,qux
diff --git a/data/csv/sales.csv b/data/csv/sales.csv
new file mode 100644
index 0000000..12299c3
--- /dev/null
+++ b/data/csv/sales.csv
@@ -0,0 +1,10 @@
+region_id,salesperson_id,sale_amount
+101,1,1000
+102,2,500
+101,2,700
+103,3,800
+102,4,300
+101,4,400
+102,5,600
+103,6,500
+101,7,900
\ No newline at end of file
diff --git a/data/csv/salespersons.csv b/data/csv/salespersons.csv
new file mode 100644
index 0000000..dc941c4
--- /dev/null
+++ b/data/csv/salespersons.csv
@@ -0,0 +1,8 @@
+salesperson_id,manager_id
+1,
+2,1
+3,1
+4,2
+5,2
+6,3
+7,3
\ No newline at end of file