Update records with ArcPy update cursor? Geodatabase format

I try to update thousands of rows when all records get the same value.
My code has a loop that runs thousands of times.
Is it possible for the program to make the change to all the columns in one command and save run time ?

For example, php+mySQL can do this:

mysql_query("UPDATE all_records SET Xcenter = $val1, Ycenter = $val2 WHERE ID > 100");

This is my code:

    for row in rows:

    row.setValue("Xcenter", val1)

    row.setValue("Ycenter", val2)

    rows.updateRow(row)

edited Jan 7 at 14:57

BERA

15.3k52042

asked Jan 7 at 14:22

Oz1988

133

Please Edit the question to specify the data storage format of the target (file geodatabase, RDBMS, shapefile,...) and provide a sample of your existing code.

– Vince
Jan 7 at 14:27

1

Please add more code, since that fragment is missing cursor creation. Note that there are no versions of ArcGIS which aren't retired for which non-DataAccess cursors are appropriate. setRow is not supported on DataAcess cursor rows, and DataAcess cursors are much faster than the old, deprecated cursors. You also have indent issues.

– Vince
Jan 7 at 14:38

exactly. I mean thousands of records. I updated. Thanks

– Oz1988
Jan 7 at 14:51

What's wrong with a for loop? In essence, it's exactly what's going one behind the scenes of any other method, except, with a da cursor, it should be more efficient than using an unnecessary intermediary like CalculateField.

– Tom
Jan 7 at 15:53

add a comment |

For example, php+mySQL can do this:

mysql_query("UPDATE all_records SET Xcenter = $val1, Ycenter = $val2 WHERE ID > 100");

This is my code:

    for row in rows:

    row.setValue("Xcenter", val1)

    row.setValue("Ycenter", val2)

    rows.updateRow(row)

edited Jan 7 at 14:57

BERA

15.3k52042

asked Jan 7 at 14:22

Oz1988

133

Please Edit the question to specify the data storage format of the target (file geodatabase, RDBMS, shapefile,...) and provide a sample of your existing code.

– Vince
Jan 7 at 14:27

1

Please add more code, since that fragment is missing cursor creation. Note that there are no versions of ArcGIS which aren't retired for which non-DataAccess cursors are appropriate. setRow is not supported on DataAcess cursor rows, and DataAcess cursors are much faster than the old, deprecated cursors. You also have indent issues.

– Vince
Jan 7 at 14:38

exactly. I mean thousands of records. I updated. Thanks

– Oz1988
Jan 7 at 14:51

What's wrong with a for loop? In essence, it's exactly what's going one behind the scenes of any other method, except, with a da cursor, it should be more efficient than using an unnecessary intermediary like CalculateField.

– Tom
Jan 7 at 15:53

add a comment |

For example, php+mySQL can do this:

mysql_query("UPDATE all_records SET Xcenter = $val1, Ycenter = $val2 WHERE ID > 100");

This is my code:

    for row in rows:

    row.setValue("Xcenter", val1)

    row.setValue("Ycenter", val2)

    rows.updateRow(row)

edited Jan 7 at 14:57

BERA

15.3k52042

asked Jan 7 at 14:22

Oz1988

133

For example, php+mySQL can do this:

mysql_query("UPDATE all_records SET Xcenter = $val1, Ycenter = $val2 WHERE ID > 100");

This is my code:

    for row in rows:

    row.setValue("Xcenter", val1)

    row.setValue("Ycenter", val2)

    rows.updateRow(row)

arcpy arcmap

edited Jan 7 at 14:57

BERA

15.3k52042

asked Jan 7 at 14:22

Oz1988

133

edited Jan 7 at 14:57

BERA

15.3k52042

asked Jan 7 at 14:22

Oz1988

133

edited Jan 7 at 14:57

BERA

15.3k52042

edited Jan 7 at 14:57

BERA

15.3k52042

edited Jan 7 at 14:57

BERA

15.3k52042

asked Jan 7 at 14:22

Oz1988

133

asked Jan 7 at 14:22

Oz1988

133

asked Jan 7 at 14:22

Oz1988

133

Please Edit the question to specify the data storage format of the target (file geodatabase, RDBMS, shapefile,...) and provide a sample of your existing code.

– Vince
Jan 7 at 14:27

1

Please add more code, since that fragment is missing cursor creation. Note that there are no versions of ArcGIS which aren't retired for which non-DataAccess cursors are appropriate. setRow is not supported on DataAcess cursor rows, and DataAcess cursors are much faster than the old, deprecated cursors. You also have indent issues.

– Vince
Jan 7 at 14:38

exactly. I mean thousands of records. I updated. Thanks

– Oz1988
Jan 7 at 14:51

What's wrong with a for loop? In essence, it's exactly what's going one behind the scenes of any other method, except, with a da cursor, it should be more efficient than using an unnecessary intermediary like CalculateField.

– Tom
Jan 7 at 15:53

add a comment |

Please Edit the question to specify the data storage format of the target (file geodatabase, RDBMS, shapefile,...) and provide a sample of your existing code.

– Vince
Jan 7 at 14:27

1

Please add more code, since that fragment is missing cursor creation. Note that there are no versions of ArcGIS which aren't retired for which non-DataAccess cursors are appropriate. setRow is not supported on DataAcess cursor rows, and DataAcess cursors are much faster than the old, deprecated cursors. You also have indent issues.

– Vince
Jan 7 at 14:38

exactly. I mean thousands of records. I updated. Thanks

– Oz1988
Jan 7 at 14:51

What's wrong with a for loop? In essence, it's exactly what's going one behind the scenes of any other method, except, with a da cursor, it should be more efficient than using an unnecessary intermediary like CalculateField.

– Tom
Jan 7 at 15:53

Please Edit the question to specify the data storage format of the target (file geodatabase, RDBMS, shapefile,...) and provide a sample of your existing code.

– Vince
Jan 7 at 14:27

Please add more code, since that fragment is missing cursor creation. Note that there are no versions of ArcGIS which aren't retired for which non-DataAccess cursors are appropriate. setRow is not supported on DataAcess cursor rows, and DataAcess cursors are much faster than the old, deprecated cursors. You also have indent issues.

– Vince
Jan 7 at 14:38

exactly. I mean thousands of records. I updated. Thanks

– Oz1988
Jan 7 at 14:51

What's wrong with a for loop? In essence, it's exactly what's going one behind the scenes of any other method, except, with a da cursor, it should be more efficient than using an unnecessary intermediary like CalculateField.

– Tom
Jan 7 at 15:53

add a comment |

2 Answers
2

active

oldest

votes

I have a weird feeling that you are looking for arcpy.CalculateField_management It is simple and quick calculate field help

answered Jan 7 at 14:57

ChrisL

369312

Great idea.. TNX :)

– Oz1988
Jan 9 at 12:36

add a comment |

Try the da.UpdateCursor:

import arcpy

feature_class = r'C:data.gdbfeatures1'



val1 = 123

val2 = 456



sql = """{0} > 100""".format(arcpy.AddFieldDelimiters(feature_class, 'ID'))



fields_to_update = ['Xcenter','Ycenter']

with arcpy.da.UpdateCursor(feature_class, fields_to_update, sql) as cursor:

    for row in cursor:

        row = val1, val2

        cursor.updateRow(row)

edited Jan 7 at 14:53

answered Jan 7 at 14:40

BERA

15.3k52042

First of all thank you Also in your program there is a loop that runs thousands of times (as many records) I'm looking for something to do it at once. The values I put are identical to all records so I do not want to run thousands of times in a loop

– Oz1988
Jan 7 at 14:47

1

@Oz1988: The data access cursors (da.UpdateCursor etc.) are very fast so thousands of rows should not be a problem, it should finish in a few seconds. This is what they are designed to do. I know no other way.

– BERA
Jan 7 at 14:52

2

@Oz1988 If you had a large number of rows (tens to hundreds of millions), it would actually be much faster to set multiple values per row than to use the Field Calculator one column at a time. Your stated goal and intended methodology are incongruous.

– Vince
Jan 7 at 14:56

add a comment |

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

I have a weird feeling that you are looking for arcpy.CalculateField_management It is simple and quick calculate field help

answered Jan 7 at 14:57

ChrisL

369312

Great idea.. TNX :)

– Oz1988
Jan 9 at 12:36

add a comment |

I have a weird feeling that you are looking for arcpy.CalculateField_management It is simple and quick calculate field help

answered Jan 7 at 14:57

ChrisL

369312

Great idea.. TNX :)

– Oz1988
Jan 9 at 12:36

add a comment |

I have a weird feeling that you are looking for arcpy.CalculateField_management It is simple and quick calculate field help

answered Jan 7 at 14:57

ChrisL

369312

I have a weird feeling that you are looking for arcpy.CalculateField_management It is simple and quick calculate field help

answered Jan 7 at 14:57

ChrisL

369312

answered Jan 7 at 14:57

ChrisL

369312

answered Jan 7 at 14:57

ChrisL

369312

answered Jan 7 at 14:57

ChrisL

369312

Great idea.. TNX :)

– Oz1988
Jan 9 at 12:36

add a comment |

Great idea.. TNX :)

– Oz1988
Jan 9 at 12:36

Great idea.. TNX :)

– Oz1988
Jan 9 at 12:36

add a comment |

Try the da.UpdateCursor:

import arcpy

feature_class = r'C:data.gdbfeatures1'



val1 = 123

val2 = 456



sql = """{0} > 100""".format(arcpy.AddFieldDelimiters(feature_class, 'ID'))



fields_to_update = ['Xcenter','Ycenter']

with arcpy.da.UpdateCursor(feature_class, fields_to_update, sql) as cursor:

    for row in cursor:

        row = val1, val2

        cursor.updateRow(row)

edited Jan 7 at 14:53

answered Jan 7 at 14:40

BERA

15.3k52042

First of all thank you Also in your program there is a loop that runs thousands of times (as many records) I'm looking for something to do it at once. The values I put are identical to all records so I do not want to run thousands of times in a loop

– Oz1988
Jan 7 at 14:47

1

@Oz1988: The data access cursors (da.UpdateCursor etc.) are very fast so thousands of rows should not be a problem, it should finish in a few seconds. This is what they are designed to do. I know no other way.

– BERA
Jan 7 at 14:52

2

@Oz1988 If you had a large number of rows (tens to hundreds of millions), it would actually be much faster to set multiple values per row than to use the Field Calculator one column at a time. Your stated goal and intended methodology are incongruous.

– Vince
Jan 7 at 14:56

add a comment |

Try the da.UpdateCursor:

import arcpy

feature_class = r'C:data.gdbfeatures1'



val1 = 123

val2 = 456



sql = """{0} > 100""".format(arcpy.AddFieldDelimiters(feature_class, 'ID'))



fields_to_update = ['Xcenter','Ycenter']

with arcpy.da.UpdateCursor(feature_class, fields_to_update, sql) as cursor:

    for row in cursor:

        row = val1, val2

        cursor.updateRow(row)

edited Jan 7 at 14:53

answered Jan 7 at 14:40

BERA

15.3k52042

First of all thank you Also in your program there is a loop that runs thousands of times (as many records) I'm looking for something to do it at once. The values I put are identical to all records so I do not want to run thousands of times in a loop

– Oz1988
Jan 7 at 14:47

1

@Oz1988: The data access cursors (da.UpdateCursor etc.) are very fast so thousands of rows should not be a problem, it should finish in a few seconds. This is what they are designed to do. I know no other way.

– BERA
Jan 7 at 14:52

2

@Oz1988 If you had a large number of rows (tens to hundreds of millions), it would actually be much faster to set multiple values per row than to use the Field Calculator one column at a time. Your stated goal and intended methodology are incongruous.

– Vince
Jan 7 at 14:56

add a comment |

Try the da.UpdateCursor:

import arcpy

feature_class = r'C:data.gdbfeatures1'



val1 = 123

val2 = 456



sql = """{0} > 100""".format(arcpy.AddFieldDelimiters(feature_class, 'ID'))



fields_to_update = ['Xcenter','Ycenter']

with arcpy.da.UpdateCursor(feature_class, fields_to_update, sql) as cursor:

    for row in cursor:

        row = val1, val2

        cursor.updateRow(row)

edited Jan 7 at 14:53

answered Jan 7 at 14:40

BERA

15.3k52042

Try the da.UpdateCursor:

import arcpy

feature_class = r'C:data.gdbfeatures1'



val1 = 123

val2 = 456



sql = """{0} > 100""".format(arcpy.AddFieldDelimiters(feature_class, 'ID'))



fields_to_update = ['Xcenter','Ycenter']

with arcpy.da.UpdateCursor(feature_class, fields_to_update, sql) as cursor:

    for row in cursor:

        row = val1, val2

        cursor.updateRow(row)

edited Jan 7 at 14:53

answered Jan 7 at 14:40

BERA

15.3k52042

edited Jan 7 at 14:53

answered Jan 7 at 14:40

BERA

15.3k52042

answered Jan 7 at 14:40

BERA

15.3k52042

answered Jan 7 at 14:40

BERA

15.3k52042

First of all thank you Also in your program there is a loop that runs thousands of times (as many records) I'm looking for something to do it at once. The values I put are identical to all records so I do not want to run thousands of times in a loop

– Oz1988
Jan 7 at 14:47

1

@Oz1988: The data access cursors (da.UpdateCursor etc.) are very fast so thousands of rows should not be a problem, it should finish in a few seconds. This is what they are designed to do. I know no other way.

– BERA
Jan 7 at 14:52

2

@Oz1988 If you had a large number of rows (tens to hundreds of millions), it would actually be much faster to set multiple values per row than to use the Field Calculator one column at a time. Your stated goal and intended methodology are incongruous.

– Vince
Jan 7 at 14:56

add a comment |

First of all thank you Also in your program there is a loop that runs thousands of times (as many records) I'm looking for something to do it at once. The values I put are identical to all records so I do not want to run thousands of times in a loop

– Oz1988
Jan 7 at 14:47

1

@Oz1988: The data access cursors (da.UpdateCursor etc.) are very fast so thousands of rows should not be a problem, it should finish in a few seconds. This is what they are designed to do. I know no other way.

– BERA
Jan 7 at 14:52

2

@Oz1988 If you had a large number of rows (tens to hundreds of millions), it would actually be much faster to set multiple values per row than to use the Field Calculator one column at a time. Your stated goal and intended methodology are incongruous.

– Vince
Jan 7 at 14:56

First of all thank you Also in your program there is a loop that runs thousands of times (as many records) I'm looking for something to do it at once. The values I put are identical to all records so I do not want to run thousands of times in a loop

– Oz1988
Jan 7 at 14:47

@Oz1988: The data access cursors (da.UpdateCursor etc.) are very fast so thousands of rows should not be a problem, it should finish in a few seconds. This is what they are designed to do. I know no other way.

– BERA
Jan 7 at 14:52

@Oz1988 If you had a large number of rows (tens to hundreds of millions), it would actually be much faster to set multiple values per row than to use the Field Calculator one column at a time. Your stated goal and intended methodology are incongruous.

– Vince
Jan 7 at 14:56

add a comment |

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