what are indexes in database tables code example

Example 1: search for value in all tables sql

DECLARE @SearchStr nvarchar(100)
SET @SearchStr = '## YOUR STRING HERE ##'
 
 
-- Copyright © 2002 Narayana Vyas Kondreddi. All rights reserved.
-- Purpose: To search all columns of all tables for a given search string
-- Written by: Narayana Vyas Kondreddi
-- Site: http://vyaskn.tripod.com
-- Updated and tested by Tim Gaunt
-- http://www.thesitedoctor.co.uk
-- http://blogs.thesitedoctor.co.uk/tim/2010/02/19/Search+Every+Table+And+Field+In+A+SQL+Server+Database+Updated.aspx
-- Tested on: SQL Server 7.0, SQL Server 2000, SQL Server 2005 and SQL Server 2010
-- Date modified: 03rd March 2011 19:00 GMT
CREATE TABLE #Results (ColumnName nvarchar(370), ColumnValue nvarchar(3630))
 
SET NOCOUNT ON
 
DECLARE @TableName nvarchar(256), @ColumnName nvarchar(128), @SearchStr2 nvarchar(110)
SET  @TableName = ''
SET @SearchStr2 = QUOTENAME('%' + @SearchStr + '%','''')
 
WHILE @TableName IS NOT NULL
 
BEGIN
    SET @ColumnName = ''
    SET @TableName = 
    (
        SELECT MIN(QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME))
        FROM     INFORMATION_SCHEMA.TABLES
        WHERE         TABLE_TYPE = 'BASE TABLE'
            AND    QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME) > @TableName
            AND    OBJECTPROPERTY(
                    OBJECT_ID(
                        QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME)
                         ), 'IsMSShipped'
                           ) = 0
    )
 
    WHILE (@TableName IS NOT NULL) AND (@ColumnName IS NOT NULL)
         
    BEGIN
        SET @ColumnName =
        (
            SELECT MIN(QUOTENAME(COLUMN_NAME))
            FROM     INFORMATION_SCHEMA.COLUMNS
            WHERE         TABLE_SCHEMA    = PARSENAME(@TableName, 2)
                AND    TABLE_NAME    = PARSENAME(@TableName, 1)
                AND    DATA_TYPE IN ('char', 'varchar', 'nchar', 'nvarchar', 'int', 'decimal')
                AND    QUOTENAME(COLUMN_NAME) > @ColumnName
        )
 
        IF @ColumnName IS NOT NULL
         
        BEGIN
            INSERT INTO #Results
            EXEC
            (
                'SELECT ''' + @TableName + '.' + @ColumnName + ''', LEFT(' + @ColumnName + ', 3630) FROM ' + @TableName + ' (NOLOCK) ' +
                ' WHERE ' + @ColumnName + ' LIKE ' + @SearchStr2
            )
        END
    END   
END
 
SELECT ColumnName, ColumnValue FROM #Results
 
DROP TABLE #Results

Example 2: sql get list of domains and the tables that use them

--Queries an sde-schema geodatabase in SQL Server

DECLARE @DOMAIN_NAME NVARCHAR(MAX);
SET @DOMAIN_NAME = 'Material';

DECLARE @CLASS_DEFS TABLE
(
     Name nvarchar(max),
     Definition XML
)

--Insert records to temporary record set
INSERT INTO @CLASS_DEFS
SELECT
  sde.gdb_items.Name,
  sde.gdb_items.Definition
FROM
-- Get the domain item's UUID.
((SELECT GDB_ITEMS.UUID AS UUID
  FROM sde.gdb_items INNER JOIN sde.gdb_itemtypes
  ON sde.gdb_items.Type = sde.gdb_itemtypes.UUID
  WHERE
    sde.gdb_items.Name = @DOMAIN_NAME AND
    sde.gdb_itemtypes.Name IN ('Coded Value Domain','Range Domain')) AS Domain

-- Find the relationships with the domain as the DestinationID.
INNER JOIN sde.gdb_itemrelationships
ON Domain.UUID = sde.gdb_itemrelationships.DestID)

-- Find the names of the origin items in the relationships.
INNER JOIN sde.gdb_items
ON Domain.UUID = sde.gdb_itemrelationships.DestID

-- Extract the field definitions.
SELECT
  ClassDefs.Name AS "Class Name",
  fieldDef.value('Name[1]', 'nvarchar(max)') AS "Field Name",
  NULL AS "Subtype Name"
FROM
  @CLASS_DEFS AS ClassDefs
CROSS APPLY
  Definition.nodes('/*/GPFieldInfoExs/GPFieldInfoEx') AS FieldDefs(fieldDef)
WHERE
  fieldDef.value('DomainName[1]', 'nvarchar(max)') = @DOMAIN_NAME

UNION

SELECT
  ClassDefs.Name AS "Class Name",
  fieldDef.value('FieldName[1]', 'nvarchar(max)') AS "Field Name",
  fieldDef.value('(../../SubtypeName)[1]', 'nvarchar(max)') AS "Subtype Name"
FROM
  @CLASS_DEFS AS ClassDefs
CROSS APPLY
   Definition.nodes('/*/Subtypes/Subtype/FieldInfos/SubtypeFieldInfo') AS FieldDefs(fieldDef)
WHERE
  fieldDef.value('DomainName[1]', 'nvarchar(max)') = @DOMAIN_NAME