diff --git a/vector-stores/spring-ai-mariadb-store/src/main/java/org/springframework/ai/vectorstore/mariadb/MariaDBVectorStore.java b/vector-stores/spring-ai-mariadb-store/src/main/java/org/springframework/ai/vectorstore/mariadb/MariaDBVectorStore.java
index 52981d5faff..506228a9b1f 100644
--- a/vector-stores/spring-ai-mariadb-store/src/main/java/org/springframework/ai/vectorstore/mariadb/MariaDBVectorStore.java
+++ b/vector-stores/spring-ai-mariadb-store/src/main/java/org/springframework/ai/vectorstore/mariadb/MariaDBVectorStore.java
@@ -332,11 +332,11 @@ protected void doDelete(Filter.Expression filterExpression) {
 		try {
 			String nativeFilterExpression = this.filterExpressionConverter.convertExpression(filterExpression);
 
-			String sql = String.format("DELETE FROM %s WHERE %s", getFullyQualifiedTableName(), nativeFilterExpression);
+			String sql = "DELETE FROM ? WHERE ?";
 
 			logger.debug("Executing delete with filter: {}", sql);
 
-			this.jdbcTemplate.update(sql);
+			this.jdbcTemplate.update(sql, getFullyQualifiedTableName(), nativeFilterExpression);
 		}
 		catch (Exception e) {
 			logger.error("Failed to delete documents by filter: {}", e.getMessage(), e);
@@ -353,21 +353,19 @@ public List<Document> doSimilaritySearch(SearchRequest request) {
 		String jsonPathFilter = "";
 
 		if (StringUtils.hasText(nativeFilterExpression)) {
-			jsonPathFilter = "and " + nativeFilterExpression + " ";
+			jsonPathFilter = "and ? ";
 		}
 		String distanceType = this.distanceType.name().toLowerCase(Locale.ROOT);
 
 		double distance = 1 - request.getSimilarityThreshold();
-		final String sql = String.format(
-				"SELECT * FROM (select %s, %s, %s, vec_distance_%s(%s, ?) as distance "
-						+ "from %s) as t where distance < ? %sorder by distance asc LIMIT ?",
-				this.idFieldName, this.contentFieldName, this.metadataFieldName, distanceType, this.embeddingFieldName,
-				getFullyQualifiedTableName(), jsonPathFilter);
+		final String sql = "SELECT * FROM (select ?, ?, ?, vec_distance_?(?, ?) as distance "
+				+ "from ?) as t where distance < ? ?order by distance asc LIMIT ?";
 
 		logger.debug("SQL query: {}", sql);
 
-		return this.jdbcTemplate.query(sql, new DocumentRowMapper(this.objectMapper), embedding, distance,
-				request.getTopK());
+		return this.jdbcTemplate.query(sql, new DocumentRowMapper(this.objectMapper), this.idFieldName,
+				this.contentFieldName, this.metadataFieldName, distanceType, this.embeddingFieldName,
+				getFullyQualifiedTableName(), jsonPathFilter, embedding, distance, request.getTopK());
 	}
 
 	// ---------------------------------------------------------------------------------
diff --git a/vector-stores/spring-ai-oracle-store/src/main/java/org/springframework/ai/vectorstore/oracle/OracleVectorStore.java b/vector-stores/spring-ai-oracle-store/src/main/java/org/springframework/ai/vectorstore/oracle/OracleVectorStore.java
index 4f70c74dde6..159c343ab38 100644
--- a/vector-stores/spring-ai-oracle-store/src/main/java/org/springframework/ai/vectorstore/oracle/OracleVectorStore.java
+++ b/vector-stores/spring-ai-oracle-store/src/main/java/org/springframework/ai/vectorstore/oracle/OracleVectorStore.java
@@ -312,11 +312,11 @@ protected void doDelete(Filter.Expression filterExpression) {
 
 		try {
 			String jsonPath = this.filterExpressionConverter.convertExpression(filterExpression);
-			String sql = String.format("DELETE FROM %s WHERE JSON_EXISTS(metadata, '%s')", this.tableName, jsonPath);
+			String sql = "DELETE FROM ? WHERE JSON_EXISTS(metadata, '?')";
 
-			logger.debug("Executing delete with filter: {}", sql);
+			logger.debug("Executing delete with filter: {} with params: {} {}", sql, this.tableName, jsonPath);
 
-			int deletedCount = this.jdbcTemplate.update(sql);
+			int deletedCount = this.jdbcTemplate.update(sql, this.tableName, jsonPath);
 			logger.debug("Deleted {} documents matching filter expression", deletedCount);
 		}
 		catch (Exception e) {
diff --git a/vector-stores/spring-ai-pgvector-store/src/main/java/org/springframework/ai/vectorstore/pgvector/PgVectorStore.java b/vector-stores/spring-ai-pgvector-store/src/main/java/org/springframework/ai/vectorstore/pgvector/PgVectorStore.java
index b6d53828bc0..ee25dbbe2f1 100644
--- a/vector-stores/spring-ai-pgvector-store/src/main/java/org/springframework/ai/vectorstore/pgvector/PgVectorStore.java
+++ b/vector-stores/spring-ai-pgvector-store/src/main/java/org/springframework/ai/vectorstore/pgvector/PgVectorStore.java
@@ -345,12 +345,11 @@ public int getBatchSize() {
 	protected void doDelete(Filter.Expression filterExpression) {
 		String nativeFilterExpression = this.filterExpressionConverter.convertExpression(filterExpression);
 
-		String sql = "DELETE FROM " + getFullyQualifiedTableName() + " WHERE metadata::jsonb @@ '"
-				+ nativeFilterExpression + "'::jsonpath";
+		String sql = "DELETE FROM ? WHERE metadata::jsonb @@ '?'::jsonpath";
 
 		// Execute the delete
 		try {
-			this.jdbcTemplate.update(sql);
+			this.jdbcTemplate.update(sql, getFullyQualifiedTableName(), nativeFilterExpression);
 		}
 		catch (Exception e) {
 			throw new IllegalStateException("Failed to delete documents by filter", e);