| Total Complexity | 40 | 
| Total Lines | 300 | 
| Duplicated Lines | 0 % | 
| Changes | 0 | ||
Complex classes like AbstractDDLQueryBuilder often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use AbstractDDLQueryBuilder, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
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| 20 | abstract class AbstractDDLQueryBuilder implements DDLQueryBuilderInterface  | 
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| 21 | { | 
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| 22 | public function __construct(  | 
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| 23 | private QueryBuilderInterface $queryBuilder,  | 
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| 24 | private QuoterInterface $quoter,  | 
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| 25 | private SchemaInterface $schema  | 
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| 26 |     ) { | 
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| 27 | }  | 
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| 28 | |||
| 29 | public function addCheck(string $name, string $table, string $expression): string  | 
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| 30 |     { | 
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| 31 | return 'ALTER TABLE '  | 
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| 32 | . $this->quoter->quoteTableName($table)  | 
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| 33 | . ' ADD CONSTRAINT '  | 
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| 34 | . $this->quoter->quoteColumnName($name)  | 
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| 35 |             . ' CHECK (' . $this->quoter->quoteSql($expression) . ')'; | 
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| 36 | }  | 
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| 37 | |||
| 38 | public function addColumn(string $table, string $column, string $type): string  | 
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| 39 |     { | 
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| 40 | return 'ALTER TABLE '  | 
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| 41 | . $this->quoter->quoteTableName($table)  | 
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| 42 | . ' ADD '  | 
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| 43 | . $this->quoter->quoteColumnName($column)  | 
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| 44 | . ' '  | 
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| 45 | . $this->queryBuilder->getColumnType($type);  | 
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| 46 | }  | 
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| 47 | |||
| 48 | public function addCommentOnColumn(string $table, string $column, string $comment): string  | 
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| 49 |     { | 
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| 50 | return 'COMMENT ON COLUMN '  | 
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| 51 | . $this->quoter->quoteTableName($table)  | 
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| 52 | . '.'  | 
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| 53 | . $this->quoter->quoteColumnName($column)  | 
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| 54 | . ' IS '  | 
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| 55 | . (string) $this->quoter->quoteValue($comment);  | 
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| 56 | }  | 
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| 57 | |||
| 58 | public function addCommentOnTable(string $table, string $comment): string  | 
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| 59 |     { | 
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| 60 | return 'COMMENT ON TABLE '  | 
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| 61 | . $this->quoter->quoteTableName($table)  | 
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| 62 | . ' IS '  | 
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| 63 | . (string) $this->quoter->quoteValue($comment);  | 
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| 64 | }  | 
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| 65 | |||
| 66 | /**  | 
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| 67 | * @throws NotSupportedException  | 
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| 68 | */  | 
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| 69 | public function addDefaultValue(string $name, string $table, string $column, mixed $value): string  | 
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| 70 |     { | 
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| 71 | throw new NotSupportedException(__METHOD__ . ' is not supported by this DBMS.');  | 
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| 72 | }  | 
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| 73 | |||
| 74 | /**  | 
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| 75 | * @throws Exception  | 
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| 76 | * @throws InvalidArgumentException  | 
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| 77 | */  | 
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| 78 | public function addForeignKey(  | 
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| 79 | string $name,  | 
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| 80 | string $table,  | 
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| 81 | array|string $columns,  | 
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| 82 | string $refTable,  | 
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| 83 | array|string $refColumns,  | 
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| 84 | string|null $delete = null,  | 
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| 85 | string|null $update = null  | 
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| 86 |     ): string { | 
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| 87 | $sql = 'ALTER TABLE '  | 
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| 88 | . $this->quoter->quoteTableName($table)  | 
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| 89 | . ' ADD CONSTRAINT ' . $this->quoter->quoteColumnName($name)  | 
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| 90 |             . ' FOREIGN KEY (' . $this->queryBuilder->buildColumns($columns) . ')' | 
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| 91 | . ' REFERENCES ' . $this->quoter->quoteTableName($refTable)  | 
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| 92 |             . ' (' . $this->queryBuilder->buildColumns($refColumns) . ')'; | 
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| 93 | |||
| 94 |         if ($delete !== null) { | 
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| 95 | $sql .= ' ON DELETE ' . $delete;  | 
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| 96 | }  | 
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| 97 | |||
| 98 |         if ($update !== null) { | 
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| 99 | $sql .= ' ON UPDATE ' . $update;  | 
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| 100 | }  | 
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| 101 | |||
| 102 | return $sql;  | 
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| 103 | }  | 
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| 104 | |||
| 105 | public function addPrimaryKey(string $name, string $table, array|string $columns): string  | 
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| 106 |     { | 
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| 107 |         if (is_string($columns)) { | 
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                         | 
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| 108 |             $columns = preg_split('/\s*,\s*/', $columns, -1, PREG_SPLIT_NO_EMPTY); | 
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| 109 | }  | 
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| 110 | |||
| 111 | /** @var string[] $columns */  | 
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| 112 |         foreach ($columns as $i => $col) { | 
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| 113 | $columns[$i] = $this->quoter->quoteColumnName($col);  | 
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| 114 | }  | 
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| 115 | |||
| 116 | return 'ALTER TABLE '  | 
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| 117 | . $this->quoter->quoteTableName($table)  | 
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| 118 | . ' ADD CONSTRAINT ' . $this->quoter->quoteColumnName($name)  | 
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| 119 |             . ' PRIMARY KEY (' . implode(', ', $columns) . ')'; | 
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| 120 | }  | 
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| 121 | |||
| 122 | public function addUnique(string $name, string $table, array|string $columns): string  | 
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| 123 |     { | 
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| 124 |         if (is_string($columns)) { | 
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| 125 |             $columns = preg_split('/\s*,\s*/', $columns, -1, PREG_SPLIT_NO_EMPTY); | 
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| 126 | }  | 
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| 127 | |||
| 128 | /** @var string[] $columns */  | 
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| 129 |         foreach ($columns as $i => $col) { | 
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| 130 | $columns[$i] = $this->quoter->quoteColumnName($col);  | 
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| 131 | }  | 
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| 132 | |||
| 133 | return 'ALTER TABLE '  | 
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| 134 | . $this->quoter->quoteTableName($table)  | 
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| 135 | . ' ADD CONSTRAINT ' . $this->quoter->quoteColumnName($name)  | 
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| 136 |             . ' UNIQUE (' . implode(', ', $columns) . ')'; | 
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| 137 | }  | 
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| 138 | |||
| 139 | public function alterColumn(string $table, string $column, ColumnSchemaBuilder|string $type): string  | 
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| 140 |     { | 
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| 141 | return 'ALTER TABLE '  | 
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| 142 | . $this->quoter->quoteTableName($table)  | 
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| 143 | . ' CHANGE '  | 
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| 144 | . $this->quoter->quoteColumnName($column)  | 
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| 145 | . ' '  | 
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| 146 | . $this->quoter->quoteColumnName($column) . ' '  | 
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| 147 | . $this->queryBuilder->getColumnType($type);  | 
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| 148 | }  | 
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| 149 | |||
| 150 | /**  | 
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| 151 | * @throws NotSupportedException  | 
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| 152 | */  | 
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| 153 | public function checkIntegrity(string $schema = '', string $table = '', bool $check = true): string  | 
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| 154 |     { | 
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| 155 | throw new NotSupportedException(__METHOD__ . ' is not supported by this DBMS.');  | 
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| 156 | }  | 
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| 157 | |||
| 158 | /**  | 
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| 159 | * @throws Exception  | 
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| 160 | * @throws InvalidArgumentException  | 
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| 161 | */  | 
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| 162 | public function createIndex(  | 
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| 163 | string $name,  | 
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| 164 | string $table,  | 
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| 165 | array|string $columns,  | 
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| 166 | string $indexType = null,  | 
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| 167 | string $indexMethod = null  | 
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| 168 |     ): string { | 
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| 169 | return 'CREATE ' . ($indexType ? ($indexType . ' ') : '') . 'INDEX '  | 
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| 170 | . $this->quoter->quoteTableName($name)  | 
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| 171 | . ' ON ' . $this->quoter->quoteTableName($table)  | 
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| 172 |             . ' (' . $this->queryBuilder->buildColumns($columns) . ')'; | 
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| 173 | }  | 
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| 174 | |||
| 175 | public function createTable(string $table, array $columns, string $options = null): string  | 
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| 176 |     { | 
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| 177 | $cols = [];  | 
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| 178 | |||
| 179 | /** @psalm-var string[] $columns */  | 
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| 180 |         foreach ($columns as $name => $type) { | 
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| 181 |             if (is_string($name)) { | 
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| 182 | $cols[] = "\t"  | 
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| 183 | . $this->quoter->quoteColumnName($name)  | 
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| 184 | . ' '  | 
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| 185 | . $this->queryBuilder->getColumnType($type);  | 
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| 186 |             } else { | 
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| 187 | $cols[] = "\t" . $type;  | 
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| 188 | }  | 
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| 189 | }  | 
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| 190 | |||
| 191 | $sql = 'CREATE TABLE '  | 
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| 192 |             . $this->quoter->quoteTableName($table) . " (\n" . implode(",\n", $cols) . "\n)"; | 
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| 193 | |||
| 194 | return $options === null ? $sql : $sql . ' ' . $options;  | 
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| 195 | }  | 
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| 196 | |||
| 197 | /**  | 
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| 198 | * @throws Exception  | 
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| 199 | * @throws InvalidArgumentException  | 
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| 200 | * @throws InvalidConfigException  | 
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| 201 | * @throws NotSupportedException  | 
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| 202 | */  | 
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| 203 | public function createView(string $viewName, QueryInterface|string $subQuery): string  | 
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| 204 |     { | 
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| 205 |         if ($subQuery instanceof QueryInterface) { | 
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| 206 | [$rawQuery, $params] = $this->queryBuilder->build($subQuery);  | 
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| 207 | |||
| 208 | /** @psalm-var mixed $value */  | 
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| 209 |             foreach ($params as $key => $value) { | 
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| 210 | /** @psalm-var mixed */  | 
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| 211 | $params[$key] = $this->quoter->quoteValue($value);  | 
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| 212 | }  | 
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| 213 | |||
| 214 | $subQuery = strtr($rawQuery, $params);  | 
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| 215 | }  | 
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| 216 | |||
| 217 | return 'CREATE VIEW ' . $this->quoter->quoteTableName($viewName) . ' AS ' . $subQuery;  | 
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| 218 | }  | 
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| 219 | |||
| 220 | public function dropCheck(string $name, string $table): string  | 
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| 221 |     { | 
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| 222 | return 'ALTER TABLE '  | 
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| 223 | . $this->quoter->quoteTableName($table)  | 
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| 224 | . ' DROP CONSTRAINT '  | 
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| 225 | . $this->quoter->quoteColumnName($name);  | 
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| 226 | }  | 
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| 227 | |||
| 228 | public function dropColumn(string $table, string $column): string  | 
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| 229 |     { | 
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| 230 | return 'ALTER TABLE '  | 
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| 231 | . $this->quoter->quoteTableName($table)  | 
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| 232 | . ' DROP COLUMN '  | 
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| 233 | . $this->quoter->quoteColumnName($column);  | 
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| 234 | }  | 
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| 235 | |||
| 236 | public function dropCommentFromColumn(string $table, string $column): string  | 
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| 237 |     { | 
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| 238 | return 'COMMENT ON COLUMN '  | 
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| 239 | . $this->quoter->quoteTableName($table)  | 
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| 240 | . '.'  | 
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| 241 | . $this->quoter->quoteColumnName($column)  | 
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| 242 | . ' IS NULL';  | 
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| 243 | }  | 
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| 244 | |||
| 245 | public function dropCommentFromTable(string $table): string  | 
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| 246 |     { | 
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| 247 | return 'COMMENT ON TABLE '  | 
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| 248 | . $this->quoter->quoteTableName($table)  | 
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| 249 | . ' IS NULL';  | 
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| 250 | }  | 
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| 251 | |||
| 252 | /**  | 
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| 253 | * @throws NotSupportedException  | 
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| 254 | */  | 
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| 255 | public function dropDefaultValue(string $name, string $table): string  | 
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| 258 | }  | 
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| 259 | |||
| 260 | public function dropForeignKey(string $name, string $table): string  | 
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| 261 |     { | 
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| 262 | return 'ALTER TABLE '  | 
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| 263 | . $this->quoter->quoteTableName($table)  | 
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| 264 | . ' DROP CONSTRAINT '  | 
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| 265 | . $this->quoter->quoteColumnName($name);  | 
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| 266 | }  | 
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| 267 | |||
| 268 | public function dropIndex(string $name, string $table): string  | 
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| 269 |     { | 
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| 270 | return 'DROP INDEX '  | 
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| 271 | . $this->quoter->quoteTableName($name)  | 
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| 272 | . ' ON '  | 
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| 273 | . $this->quoter->quoteTableName($table);  | 
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| 274 | }  | 
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| 275 | |||
| 276 | public function dropPrimaryKey(string $name, string $table): string  | 
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| 277 |     { | 
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| 278 | return 'ALTER TABLE '  | 
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| 279 | . $this->quoter->quoteTableName($table)  | 
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| 280 | . ' DROP CONSTRAINT '  | 
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| 281 | . $this->quoter->quoteColumnName($name);  | 
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| 282 | }  | 
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| 283 | |||
| 284 | public function dropTable(string $table): string  | 
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| 287 | }  | 
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| 288 | |||
| 289 | public function dropUnique(string $name, string $table): string  | 
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| 290 |     { | 
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| 291 | return 'ALTER TABLE '  | 
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| 292 | . $this->quoter->quoteTableName($table)  | 
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| 293 | . ' DROP CONSTRAINT '  | 
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| 294 | . $this->quoter->quoteColumnName($name);  | 
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| 295 | }  | 
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| 296 | |||
| 297 | public function dropView(string $viewName): string  | 
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| 298 |     { | 
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| 299 | return 'DROP VIEW ' . $this->quoter->quoteTableName($viewName);  | 
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| 300 | }  | 
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| 301 | |||
| 302 | public function renameColumn(string $table, string $oldName, string $newName): string  | 
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| 303 |     { | 
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| 304 | return 'ALTER TABLE '  | 
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| 305 | . $this->quoter->quoteTableName($table)  | 
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| 306 | . ' RENAME COLUMN ' . $this->quoter->quoteColumnName($oldName)  | 
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| 307 | . ' TO ' . $this->quoter->quoteColumnName($newName);  | 
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| 308 | }  | 
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| 309 | |||
| 310 | public function renameTable(string $oldName, string $newName): string  | 
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| 315 | }  | 
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| 316 | |||
| 317 | public function truncateTable(string $table): string  | 
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| 320 | }  | 
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| 321 | }  | 
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| 322 |