First of all: i don't need a full-text-search engine, i don't need full-text-search in my code. I have a database with ~2000 tables, and i need to find the table and column in which certain information is stored, for developing purposes. Is there any quick way (maybe an SQL Server Management Studio trick that i should know of) to do this? I think phpmyadmin provides such a feature for mysql dbs. At the moment i'm seriously thinking of dumping the database to an .sql file and use a text editor to search for the phrases i'm looking for.
Check the INFORMATION_SCHEMA. You can select on it - there is a table containing all the field names etc. and you can then do search on that one.
I don't see a way how to do it without dynamic SQL - get list of all tables and their columns from sys.tables and sys.columns (don't forget to add proper schema if you're using them), construct query that checks for the values you're trying to find and stores table and column name in temporary table, place all queries into (temp) table and finally cursor/loop over that table executing all queries.
PS. your idea of dumping everything into *.sql files should work as well, depends on the volume of data.
Related
I have loaded a huge table from SQL Server onto Hive. The mistake I made is I created the table as a Internal table in HIVE. Can anyone suggest any hack so that I can alter the table structure , without dropping the data.
The data is huge and I cant afford to export the data out of source again.
The problem right now, is that since the column orders don't match the SQL server table, a lot of columns display NULL.
Any help will be highly appreciated.
I do not see any problem to use an Alter Table on a internal table. (https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL#LanguageManualDDL-AlterTable/Partition/Column)
Another - but not recommended - option would be to open your hive metastore(HCatalog) and apply the changes there. Hive reads out the schema information from a relational database (configured during the Hadoop setup, default is MySQL). In this MySQL you can try to change some settings. However, this is not recommended as with a mistake, you can screw your whole Hive databases.
The safest way is creating a new table and using the existing as a source
create table new_table
as
select
[...]
from existing_table
We have some sets of the tables in same database like table1 and table_copy. Now we are planning to migrate the old data from table1 to table_copy which is currently in use. But before that we have to compare the definitions of the tables so that the data import will be hassel free. Can we compare the table definitions with a sybase query.
I searched over net by all I get approaches to compare the data in two tables. but we intend to compare the definitions only.
You could do queries on sysobjects, syscolumns and systypes.
Or you could compare with diff (or perl or whatever) the outputs of sp_help.
However isn't this really a development and testing problem? You should perhaps copy the database into a pre-production database and test your scripts - repeat until perfect.
If you can only do the full migration on the Production database for some resources reason (time, money, servers,) then you need full dumps before starting.
Isn't the DDL for these two tables saved and accurate in a Version Control system somewhere? Perhaps they're from a 3rd party system though, so you don't have that.
I have been told an entity called table_loader in a database, database_1 in SSMS (version 2008 R2) exists and needs to be fixed. It is not obviously a stored proc. It's purpose is to convert an excel spreadsheet to table data. Is there any easy way to search a database for an entity name in SSMS.
The find function appears to work only with text SQL files as opened in SSMS.
Since originally posting I have found out from a colleague that this entity is a DTS package; however, I believe searching a database for a name is still a useful thing to be able to do, especially if you don't know what "layer" the entity is in with respect to the database folder structure.
Thanks.
A great, free, tool is Red-Gate SQL Search. It lets you search for just about any object from SSMS in a very user-friendly manner. http://www.red-gate.com/products/sql-development/sql-search/. You just type in the object name and it will search across databases and object types and display what it finds. I like it because it also searches within sproc text and such which can be very helpful, depending on what you're looking for.
If you open up a query window in SSMS you can use the below SQL to do a wildcard search:
USE [dbname]
SELECT * FROM sysobjects WHERE name like '%table_loader%'
This thread has got some good queries and lists the xtype meanings (sproc, table, key etc):
How do I get list of all tables in a database using TSQL?
I plan on updating some table names by create a synonym of the old name and renaming the table to what I want it to be. Can replication properly reference a synonym?
Also as a side question, is there an easy way to see if a specific table is actually being replicated? (via a query perhaps)
I don't think so. Replication works by reading the log and there are no log records generated for a synonym. As to your question about finding out which tables are replicated, a query on sysarticles in the table should get you where you want to go. HTH.
SQL Server 2005. Is there a sql query that will return a text field containing the same type of schema info as you would find in doing a right click table -> Script Table As -> Create To (or Alter To) from SQL Server Management Studio ?
I'm looking for a single/flat format that describes the entire table, including constraints, indices, etc.
I am aware of:
sp_help table_name
but that doesn't provide the single flat format I'm looking for. Ideally it would be in a scriptable format, such as the AlterTo result that could be executed against the server.
This is for a scheduled process that documents table schemas on a nightly basis for checking in to version control (SVN).
Not really. A table def is a collection of columns, constraints etc.
There is an SVN plugin that may help called ScriptDB4SVN. I've not used it personally, I'm going on hearsay.
Was searching the 'net again for an answer to this, and came across this SO question. It doesn't accurately capture all the same data as SQL Management Studios Create-to, but enough for my purposes (scripting the database structure for version control purposes).
There is no such command in SQL Server. This is primarily because the Scripting facilitiy is actually in SMO and not in SQL Server itself. There are a number of free console command-line tools that can do it that you could call via xp_CmdShell.
However, if you really want to do this from T-SQL, then you will need a script or stored procedure that enumerates all of the tables attributes, columns, column datatypes, defaults, nullabilty, etc. etc. and then reassembles it into a CREATE TABLE script. This is a Huge task. That's the bad news. The good news is that someone (Lowell Izaguirre) has already done this and posted it in this article (http://www.sqlservercentral.com/scripts/Miscellaneous/30730/) at SQLServerCentral.Com.
Enjoy.
Not really - you can either use C# (or VB.NET) and SMO (SQL Management Objects) to script out your database objects (tables and all), or you can use SQL to get the list of columns for a table:
SELECT * FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'Your Table Name here'
But I don't know of any easy way in SQL itself to create Create/Alter scripts for database objects, sorry.
Marc